weed control trials research report 2014 · ideas, the herbicide samples they have provided for the...

GO TO TABLE OF CONTENTS

WEED CONTROL TRIALS

RESEARCH REPORT

2014

P.H. Sikkema

ACKNOWLEDGEMENTS

We appreciate the cooperation and assistance provided by the representatives of the various agricultural companies; their ideas, the herbicide samples they have provided for the research work, as well as their monetary assistance. Funding for the 2014 weed management research program was also provided by the following: Grain Farmers of Ontario Ontario Farm Innovation Program Growing Forward 2 Ontario Bean Growers We also appreciate the cooperation of the following seed companies who provided the seed: DeKalb Canada Inc., Hensall District Co-op and Pioneer.

Additionally, we would like to acknowledge the participation of farmer co-operators who allowed us to use their land for research purposes.

Technical Assistants Research Technicians Summer Assistants Lynette Brown Meaghan Burns Mary-Gwen Miltenburg Holly Byker Rebecca Jennen Laura Murray Todd Cowan Elyse Johnston April Stead Chris Kramer Jesse Kankula Loretta Steeper Kris McNaughton Laura Louwagie Megan Vyn Christy Shropshire Deanna Martin Jenna Wilson We trust that the information provided by this research will further the science of weed management by assisting companies with the registrations and labeling of their products. This information will also allow research and extension personnel to provide proper herbicide recommendations, thereby enabling growers to achieve consistent, broad spectrum weed control with a minimum of crop damage.

P.H. Sikkema Ridgetown Campus, University of Guelph

N0P 2C0 (519) 674-1500 ext. 63603 [email protected]

2014 WEATHER DATA RIDGETOWN CAMPUS

RAINFALL IN MM

DATE APRIL MAY JUNE JULY AUGUST SEPT. OCT.

1 0 0 0 1.4 0 29.6 0 2 0 0.2 4.6 0 0 45.9 0 3 0.8 2.5 0.5 0 0 0.2 11.1 4 4.4 1.5 0.8 0 0 4.4 6.4 5 0 0.2 0 0 11.3 9.0 0 6 0 0 - 0 0 1.6 8.4 7 11.4 18.7 0 23.2 0 0 0.4 8 3.4 1 0.8 23.1 0 0 0 9 0 0.5 0 0 0 0 0 10 2.9 0 0 0 0 46.5 0 11 0.2 0 6.3 0 12.4 0.2 0 12 0 15.9 0 0 5.4 0 0 13 0 2.2 0 25.3 0 4.4 10.2 14 3.2 12 0 0.5 0 0.0 6.6 15 4.6 26.3 0 0 0 1.0 2.2 16 0 0 0 0.2 0 0.2 0 17 0 3.1 0 0 0 - 2.0 18 0 0.2 18.8 0 0 0 2.3 19 0 0 0 2.3 3.7 0 0 20 0 0.7 0 0 0 0.9 0.7 21 0 8.6 0 0 0 2.5 0.6 22 1.1 - 0 0 0 0 0 23 0 0 1.3 26.3 - 0 0 24 0.2 - 9.6 0 0 0 0 25 3.3 0 0.2 0 0 0 0 26 0 0 0 0 3.0 0 0 27 0.2 2.2 0 26.9 0 0 0 28 0 1.2 0 0.9 0 0 0 29 27.3 - 5.1 0 0 0 0 30 3.1 0 0 0 0 13.0 0 31 0 0 0 4.0

TOTAL 66.1 97 48 130.1 35.8 159.4 54.9

30 YEAR AVG. 75.9 80.0 70.5 73.8 82.4 86.2 69.1

TEMPERATURE (C)

MEAN MAX 12.6 19.3 25.8 24.6 24.9 21.5 15.5 MEAN MIN 0.6 8.3 13.9 13.5 13.8 9.8 5.5

MEAN 6.6 13.4 19.8 19.1 19.4 15.7 10.5

TEMPERATURE, 30 YEAR AVERAGE (C)

MEAN MAX 13.0 19.6 24.8 27.2 26.1 22.4 15.6 MEAN MIN 2.5 8.4 14.1 16.0 14.8 11.1 5.6

MEAN 7.8 14.0 19.2 21.6 20.4 16.8 10.6 Weather data

provided by: and

2014 WEATHER DATA HURON RESEARCH STATION

RAINFALL IN MM

DATE APRIL MAY JUNE JULY AUGUST SEPT. OCT.

1 0 2.2 0 16.5 1.8 7.2 0 2 0 4 0.3 3.1 5.1 7 0 3 0 9.4 0 0 0 0 19.6 4 11.2 0.3 0 0 0 0 4.3 5 0 0 0 0 0.6 39.6 1.4 6 0 0 0 0 1.1 26 2.1 7 4.8 0.3 0 14.5 0 0 1.4 8 4 4.9 1.1 33.9 0 0 0.3 9 0 2.1 0 3.5 0 0 0

10 0.4 0 0 0 0 34.8 0 11 0 0 3.2 0 14.2 1.7 1.2 12 7.8 1.5 32.7 6.1 5.3 0 0 13 2.2 34.7 0.3 8.2 0 6 1.1 14 3.8 6.2 0 1 0.6 0 5.8 15 0 26.8 0 7.9 0 0.3 10.7 16 0.8 0.5 1.4 8.9 6.7 0.3 2.8 17 1.3 0.5 0.3 0 0.3 0 1.7 18 1.3 0.3 6.1 0 0 0 11 19 0 0 1.3 1.8 2.5 0 0 20 0 11.5 0 0 3.8 8.2 2.6 21 0 12.5 0 0.3 0.3 9.1 1.6 22 3.6 2.1 0 0 0 0 0 23 0 0 3 0.3 0 0 0 24 0 0 7.4 0 0 0 0.3 25 5.4 0 0 0 0 0 0 26 0.6 0 0 0 0 0 0 27 0 11.2 0 13.6 0 0 2.1 28 0 0.3 0 17.8 0 0 5.6 29 34 0 6.2 1.6 0 0 1.4 30 8.4 0 0 0.3 0 11 0.6 31 0 2.6 1.3 6.5

TOTAL 89.6 131.3 63.3 141.9 43.6 151.2 84.1

30 YEAR AVG. 77 85.1 84.8 96.8 67.5 111.5 95.1

TEMPERATURE ( C )

MEAN MAX 11.8 19.4 26.2 24.2 25.3 21.8 14.3 MEAN MIN 1.1 8.2 14.1 13.6 13.6 10.5 5.7

MEAN 6.3 13.8 20.3 19.2 19.3 15.9 10.2 TEMPERATURE, 30 YEAR AVERAGE ( C )

MEAN MAX 12.4 19.2 24.4 26.3 25.5 21.7 14.6 MEAN MIN 2.1 7.8 13.1 15.2 14.5 10.8 5.4

MEAN 7.2 13.6 18.8 20.8 20.0 16.2 10.0

BAYER CODE ABBREVIATIONS

Code Common Name Scientific Name ABUTH Velvetleaf Abutilon theophrasti AMAPO Green pigweed Amaranthus powellii AMARE Redroot pigweed Amaranthus retroflexus AMASS Pigweed species Amaranthus spp. AMBEL Common ragweed Ambrosia artemisiifolia CHEAL Common lamb’s-quarter Chenopodium album ERYCH Wormseed mustard Erysimum cheiranthoides HIBTR Flower-of-an-hour Hibiscus trionum LACSE Prickly lettuce Lactuca serriola LAMAM Henbit Lamium amplexicaule PHSAN Adzuki bean Phaseolus angulatus PLAMA Broad-leaved plantain Plantago major POLCO Wild buckwheat Polygonum convolvulus POLLA Green smartweed, Pale smartweed Polygonum lapathifolium, Polygonum scabrum POLPE Lady’s-thumb Polygonum persicaria POLSC =POLLA POROL Purslane Portulaca oleracea SINAR Wild mustard Sinapis arvensis SOLPT Eastern black nightshade Solanum ptycanthum SONAR Perennial sowthistle Sonchus arvensis SONAS Spiny annual sowthistle Sonchus asper SONOL Annual sowthistle Sonchus oleraceus STEME Common chickweed Stellaria media TAROF Dandelion Taraxacum officinale

AGRRE Quackgrass Agropyron repens DIGIS Smooth crabgrass Digitaria ischaemum DIGSA Large crabgrass Digitaria sanguinalis DIGSS Crabgrass species Digitaria spp. ECHCG Barnyard grass Echinochloa crus-galli GGGAN Annual grass species PANCA Witch grass Panicum capillare PANDI Fall panicum Panicum dichotomiflorum SETFA Giant foxtail Setaria faberi SETLU Yellow foxtail Setaria glauca SETVI Green foxtail Setaria viri ZEAMX Volunteer corn Zea mays

TABLE OF CONTENTS

CORN

TOLERANCE OF RR CORN TO GROUP 1 HERBICIDES APPLIED PREPLANT I (13, 14, 15) (FC14A1A) ................... 1

TOLERANCE OF RR CORN TO GROUP 1 HERBICIDES APPLIED PREPLANT II (13, 14, 15) (FC14A1B) .................. 3

WEED CONTROL WITH PYROXASULFONE + CARFENTRAZONE AND F9312-4 IN NO-TILL CORN (FC14A2) ........ 5

WEED CONTROL WITH PYROXASULFONE AND FLUTHIACET-METHYL IN NO-TILL CORN (FC14A3) .................... 8

WEED MANAGEMENT IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A I (FC14B2A) ................................................................................................................................................................ 11

WEED MANAGEMENT IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A II (FC14B2B) ................................................................................................................................................................ 13

WEED MANAGEMENT STRATEGIES IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A APPLIED PRE, EPOST AND LPOST I (FC14B3A) ............................................................................... 15

WEED MANAGEMENT STRATEGIES IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A APPLIED PRE, EPOST AND LPOST II (FC14B3B) .............................................................................. 17

EFFECT OF GLYPHOSATE PLUS FUNGICIDE APPLIED AT V4-V6 ON CROP INJURY, DISEASE CONTROL AND CORN YIELD (14, 15) (FC14C1A) ................................................................................................................ 19

EFFECT OF GLYPHOSATE PLUS FUNGICIDE APPLIED AT V4-V6 ON CROP INJURY, DISEASE CONTROL AND CORN YIELD II (14, 15) (FC14C1B) ............................................................................................................. 21

EFFECT OF THE ADDITION OF MANGANESE AND ZINC TO GLYPHOSATE IN GLYPHOSATE-RESISTANT CORN II (FC14C4B) ................................................................................................................................................. 23

EFFECT OF BIOSTIMULANTS ADDED TO POSTEMERGENCE HERBICIDES IN CORN I (FC14C5A) ....................... 25

EFFECT OF BIOSTIMULANTS ADDED TO POSTEMERGENCE HERBICIDES IN CORN II (FC14C5B) ...................... 27

BROADLEAF WEED CONTROL IN CORN WITH 2,4-D APPLIED POSTEMERGENCE (FC14C7) ................................ 30

WEED CONTROL IN CORN WITH GLYPHOSATE PLUS AMS (FC14C8) ...................................................................... 32

WEED CONTROL IN CORN WITH GLYPHOSATE PLUS AMS PLUS ADJUVANTS (FC14C9) ..................................... 35

BIOLOGICALLY EFFECTIVE RATE OF HALOSULFURON APPLIED POSTEMERGENCE IN CORN I (FC14C10A) .............................................................................................................................................................. 38

BIOLOGICALLY EFFECTIVE RATE OF HALOSULFURON APPLIED POSTEMERGENCE IN CORN II (FC14C10B) .............................................................................................................................................................. 40

BIOLOGICALLY EFFECTIVE RATE OF HALOSULFURON APPLIED POSTEMERGENCE IN CORN III (FC14C10C).............................................................................................................................................................. 42

TOLERANCE OF CORN TO HALOSULFURON APPLIED PRE AND POST I (FC14C11A) ............................................ 44

TOLERANCE OF CORN TO HALOSULFURON APPLIED PRE AND POST II (FC14C11B) ........................................... 46

TOLERANCE OF CORN TO HALOSULFURON APPLIED PRE AND POST II (FC14C11C) ........................................... 48

BENEFIT OF ADDING AMS TO GLYPHOSATE (14, 15) (FC14C13A) ............................................................................. 50

SOYBEAN WEED CONTROL IN NO-TLL SOYBEAN WITH PYROXASULFONE + SULFENTRAZONE AND F9314-3 (SY14A1) ... 52

WEED MANAGEMENT IN RR2 XTEND SOYBEAN (SY14A2) ......................................................................................... 55

PREPLANT BURNDOWN IN NO-TILL SOYBEAN WITH GLYPHOSATE PLUS SAFLUFENACIL PLUS ADJUVANTS (SY14A4) ............................................................................................................................................ 57

WEED MANAGEMENT (SOLPT) IN SOYBEAN WITH PREEMERGENCE HERBICIDES (SY14B2) .............................. 59

CORN, VOLUNTEER ENLIST, CONTROL IN RR2Y SOYBEAN I (13, 14, 15) I (SY14C1A) ........................................... 61

CORN, VOLUNTEER ENLIST, CONTROL IN RR2Y SOYBEAN II (13, 14, 15) II (SY14C1B) ......................................... 62

EFFECT OF DICAMBA TANK CONTAMINATION ON RR2Y SOYBEAN I (12, 13, 14) (SY14C2A) ................................ 63

EFFECT OF DICAMBA TANK CONTAMINATION ON RR2Y SOYBEAN II (12, 13, 14) (SY14C2B) ............................... 64

EFFECT OF ENLIST TANK CONTAMINATION ON RR2Y SOYBEAN I (12, 13, 14) (SY14C3A) .................................... 65

EFFECT OF ENLIST TANK CONTAMINATION ON RR2Y SOYBEAN II (12, 13, 14) (SY14C3B) ................................... 66

EFFECT OF THE ADDITION OF MANGANESE AND ZINC TO GLYPHOSATE IN GLYPHOSATE-RESISTANT SOYBEAN II (SY14C8B) .......................................................................................................................................... 67

EFFECT OF BIOSTIMULANTS ADDED TO POSTEMERGENCE HERBICIDES IN SOYBEAN I (SY14C9A)................. 69

EFFECT OF BIOSTIMULANTS ADDED TO POSTEMERGENCE HERBICIDES IN SOYBEAN II (SY14C9B)................ 71

WHAT IS THE EFFECT OF LATE EMERGING WEEDS ON THE YIELD OF ROUNDUP READY SOYBEAN I (SY14C12A) .............................................................................................................................................................. 74

WHAT IS THE EFFECT OF LATE EMERGING WEEDS ON THE YIELD OF ROUNDUP READY SOYBEAN II (SY14C12B) .............................................................................................................................................................. 76

WHAT IS THE EFFECT OF LATE EMERGING WEEDS ON THE YIELD OF ROUNDUP READY SOYBEAN III (SY14C12C).............................................................................................................................................................. 81

POSTEMERGENCE WEED CONTROL IN SOYBEAN WITH GLYPHOSATE PLUS CHLORIMURON PLUS ADJUVANTS (SY14C13) ......................................................................................................................................... 86

BENEFIT OF ADDING AMS TO GLYPHOSATE (14, 15) (SY14C15A) ............................................................................. 88

WINTER WHEAT TOLERANCE OF WINTER WHEAT TO FENOXAPROP-P-ETHYL II (WW14T1A) .......................................................... 91

TOLERANCE OF WINTER WHEAT TO FENOXAPROP-P-ETHYL II (WW14T1B) .......................................................... 93

TOLERANCE OF WINTER WHEAT TO HERBICIDE X FUNGICIDE TANKMIXES I (12, 13, 14) (WW14T2A) ............... 95

TOLERANCE OF WINTER WHEAT TO HERBICIDE X FUNGICIDE TANKMIXES I (12, 13, 14) (WW14T2B) ............... 97

TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (TWINLINE) PLUS FOLIAR FERTILZIER TANKMIXES I (14, 15, 16) (WW14T3A) ................................................................................................................... 99

TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (TWINLINE) PLUS FOLIAR FERTILZIER TANKMIXES II (14, 15, 16) (WW14T3B) .................................................................................................................. 105

TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (STRATEGO) PLUS FOLIAR FERTILZIER TANKMIXES I (14, 15, 16) (WW14T4A) ................................................................................................................... 111

TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (STRATEGO) PLUS FOLIAR FERTILZIER TANKMIXES II (14, 15, 16) (WW14T4B) .................................................................................................................. 117

TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (QUILT) PLUS FOLIAR FERTILZIER TANKMIXES I (14, 15, 16) (WW14T5A) ................................................................................................................... 123

TOLERANCE OF WINTER WHEAT TO HERBICIDE PLUS FUNGICIDE (QUILT) PLUS FOLIAR FERTILZIER TANKMIXES II (14, 15, 16) (WW14T5B) .................................................................................................................. 129

Edible Bean Research Report Section 2 Problem Weed Research Report Section 3

1

TOLERANCE OF RR CORN TO GROUP 1 HERBICIDES APPLIED PREPLANT I (13, 14,15)

CHRISTY SHROPSHIRE, PETER SIKKEMA EXPERIMENT ID: FC14A1A

CROP: ZEAMX, Corn (RR & LL) (DKC53-56 RIB). Planted: May-24-14, 78800 SEEDS/HA, 5 CM Deep, 75 CM Row Width.

Planting Method: CONV. Emerged On: May-30-14.

Expt. Design: FACTOR. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range N1.

Site Description: Soil Texture: SL. %OM: 5.6 %Sand: 54 %Silt: 27 %Clay: 19 pH: 6.4 CEC: 18.

APPLICATION DESCRIPTION STAGE AT APPLICATION

Application: A B Application: A B

Date : May-14-14 May-23-14 Crop 1 ZEAMX

Time of Day: 09:30 07:05 Height : NOT PLNT NOT PLNT

Timing : PP 1 PP 2

Air Temp. : 18.5 C 16.7 C

% Humidity : 75 70.7

Wind Speed : 1.0 KM/H 2.2 KM/H

Dew Present: Y N

Soil Temp.: 16.7 C 16.0 C

Soil Moist.: WET MOIST

Cloud Cover: 80% 85%

Equipment :

Pressure : 207 207

Nozzle Type: LOW DRIFT LOW DRIFT

Nozzle Size: ULD120-02 ULD120-02

Noz.Spacing: 50 CM 50 CM

Boom Length: 2 M 2 M

Boom Height: 50 CM 50 CM

Carrier : WATER WATER

Appl.Volume: 200 L/ha 200 L/ha

Propellant : CO2 CO2

Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX Part Rated 10 PLA - Rating Date Jun-6-14 Jun-13-14 Jun-27-14 Jul-25-14 Jun-13-14 Jun-13-14 Jun-27-14 Nov-5-14 Nov-5-14 Rating Type INJURY INJURY INJURY INJURY STAND DRY WT AV HEIGHT YIELD YIELD Rating Unit % % % % #/1M G/1M CM T/HA BU/AC Crop Stage Majority V2 V4 V8-V9 R1 ROW ROW Crop Stage Scale 15-20 CM 35-40 CM 1-1.2 M 2.5-3M Trt-Eval Interval 7 DAE 14 DAE 28 DAE 56 DAE 14 DAE 14 DAE 28 DAE Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 10 11 TABLE OF R MEANS Replicate 1 0 0 0 0 6.8 5.2 108 17.09 272.3 Replicate 2 0 0 0 0 6.7 4.9 104 17.85 284.4 Replicate 3 0 0 0 0 6.6 4.6 104 18.13 288.8 Replicate 4 0 0 0 0 6.5 4.0 103 17.63 280.8 TABLE OF A () MEANS

1 Apply 7 days before seeding PP 1 A 0 0 0 0 6.6 4.6 105 17.74 282.6 2 Apply 1 day before seeding PP 2 B 0 0 0 0 6.7 4.8 105 17.61 280.6 LSD= NS NS NS NS NS NS NS NS NS

TABLE OF B () MEANS 1 Untreated control 0 0 0 0 6.9 5.4 106 17.75 282.8 2 clethodim 240 EC 30 g AI/ha 0 0 0 0 6.5 4.8 104 17.43 277.7 2 Amigo 1000 SL 0.50 % V/V 3 clethodim 240 EC 60 g AI/ha 0 0 0 0 6.9 4.8 105 17.50 278.8 3 Amigo 1000 SL 0.50 % V/V 4 fenoxaprop-p-ethyl 80.5 EC 54 g AI/ha 0 0 0 0 7.0 4.7 106 17.87 284.7 5 fenoxaprop-p-ethyl 80.5 EC 108 g AI/ha 0 0 0 0 6.0 3.9 104 17.75 282.8 6 fluazifop-p-butyl 125 EC 75 g AI/ha 0 0 0 0 7.0 5.0 104 17.70 282.0 7 fluazifop-p-butyl 125 EC 150 g AI/ha 0 0 0 0 6.6 4.6 103 17.34 276.3 8 quizalifop-p-ethyl 96 EC 36 g AI/ha 0 0 0 0 6.8 4.8 106 17.96 286.1 8 Sure-Mix 1000 SL 0.50 % V/V 9 quizalifop-p-ethyl 96 EC 72 g AI/ha 0 0 0 0 6.9 4.1 103 17.22 274.3 9 Sure-Mix 1000 SL 0.50 % V/V

10 sethoxydim 450 EC 150 g AI/ha 0 0 0 0 6.4 4.9 106 18.09 288.2 10 Merge 1000 SL 1.00 L/ha 11 sethoxydim 450 EC 300 g AI/ha 0 0 0 0 6.3 4.4 106 17.82 283.9 11 Merge 1000 SL 1.00 L/ha

LSD= NS NS NS NS NS NS NS NS NS TABLE OF A () B () MEANS

1 Apply 7 days before seeding PP 1 A 0 0 0 0 7.0 5.4 104 17.83 284.1 1 Untreated control 2 Apply 1 day before seeding PP 2 B 0 0 0 0 6.8 5.4 107 17.67 281.6 1 Untreated control 1 Apply 7 days before seeding PP 1 A 0 0 0 0 6.5 4.1 103 17.42 277.5 2 clethodim 240 EC 30 g AI/ha 2 Amigo 1000 SL 0.50 % V/V 2 Apply 1 day before seeding PP 2 B 0 0 0 0 6.5 5.6 106 17.44 277.9 2 clethodim 240 EC 30 g AI/ha 2 Amigo 1000 SL 0.50 % V/V

2

TOLERANCE OF RR CORN TO GROUP 1 HERBICIDES APPLIED PREPLANT I (13, 14, 15)

CHRISTY SHROPSHIRE, PETER SIKKEMA EXPERIMENT ID: FC14A1A

Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX Part Rated 10 PLA -

Rating Date Jun-6-14 Jun-13-14 Jun-27-14 Jul-25-14 Jun-13-14 Jun-13-14 Jun-27-14 Nov-5-14 Nov-5-14 Rating Type INJURY INJURY INJURY INJURY STAND DRY WT AV HEIGHT YIELD YIELD Rating Unit % % % % #/1M G/1M CM T/HA BU/AC Crop Stage Majority V2 V4 V8-V9 R1 ROW ROW Crop Stage Scale 15-20 CM 35-40 CM 1-1.2 M 2.5-3M Trt-Eval Interval 7 DAE 14 DAE 28 DAE 56 DAE 14 DAE 14 DAE 28 DAE Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 10 11

1 Apply 7 days before seeding PP 1 A 0 0 0 0 6.8 4.4 103 17.87 284.7 3 clethodim 240 EC 60 g AI/ha 3 Amigo 1000 SL 0.50 % V/V 2 Apply 1 day before seeding PP 2 B 0 0 0 0 7.0 5.1 108 17.12 272.8 3 clethodim 240 EC 60 g AI/ha

3 Amigo 1000 SL 0.50 % V/V 1 Apply 7 days before seeding PP 1 A 0 0 0 0 7.0 4.4 107 17.83 284.1 4 fenoxaprop-p-ethyl 80.5 EC 54 g AI/ha 2 Apply 1 day before seeding PP 2 B 0 0 0 0 7.0 5.1 104 17.90 285.2 4 fenoxaprop-p-ethyl 80.5 EC 54 g AI/ha 1 Apply 7 days before seeding PP 1 A 0 0 0 0 5.8 3.5 103 17.53 279.2 5 fenoxaprop-p-ethyl 80.5 EC 108 g AI/ha 2 Apply 1 day before seeding PP 2 B 0 0 0 0 6.3 4.4 106 17.97 286.3 5 fenoxaprop-p-ethyl 80.5 EC 108 g AI/ha 1 Apply 7 days before seeding PP 1 A 0 0 0 0 7.0 5.1 104 17.47 278.4 6 fluazifop-p-butyl 125 EC 75 g AI/ha 2 Apply 1 day before seeding PP 2 B 0 0 0 0 7.0 5.0 104 17.93 285.6 6 fluazifop-p-butyl 125 EC 75 g AI/ha 1 Apply 7 days before seeding PP 1 A 0 0 0 0 6.8 4.9 105 17.34 276.2 7 fluazifop-p-butyl 125 EC 150 g AI/ha 2 Apply 1 day before seeding PP 2 B 0 0 0 0 6.5 4.4 101 17.35 276.4 7 fluazifop-p-butyl 125 EC 150 g AI/ha 1 Apply 7 days before seeding PP 1 A 0 0 0 0 6.8 4.8 106 18.15 289.2 8 quizalifop-p-ethyl 96 EC 36 g AI/ha 8 Sure-Mix 1000 SL 0.50 % V/V 2 Apply 1 day before seeding PP 2 B 0 0 0 0 6.8 4.7 106 17.76 282.9 8 quizalifop-p-ethyl 96 EC 36 g AI/ha

8 Sure-Mix 1000 SL 0.50 % V/V 1 Apply 7 days before seeding PP 1 A 0 0 0 0 6.5 3.9 104 17.46 278.2 9 quizalifop-p-ethyl 96 EC 72 g AI/ha 9 Sure-Mix 1000 SL 0.50 % V/V 2 Apply 1 day before seeding PP 2 B 0 0 0 0 7.3 4.3 101 16.98 270.4 9 quizalifop-p-ethyl 96 EC 72 g AI/ha

9 Sure-Mix 1000 SL 0.50 % V/V 1 Apply 7 days before seeding PP 1 A 0 0 0 0 6.5 4.7 106 18.02 287.2

10 sethoxydim 450 EC 150 g AI/ha 10 Merge 1000 SL 1.00 L/ha

2 Apply 1 day before seeding PP 2 B 0 0 0 0 6.3 5.1 106 18.16 289.3 10 sethoxydim 450 EC 150 g AI/ha 10 Merge 1000 SL 1.00 L/ha

1 Apply 7 days before seeding PP 1 A 0 0 0 0 6.3 5.3 108 18.18 289.6 11 sethoxydim 450 EC 300 g AI/ha

11 Merge 1000 SL 1.00 L/ha 2 Apply 1 day before seeding PP 2 B 0 0 0 0 6.3 3.4 103 17.46 278.2

11 sethoxydim 450 EC 300 g AI/ha

11 Merge 1000 SL 1.00 L/ha LSD= NS NS NS NS NS NS NS NS NS

Conclusions: This experiment was established to determine the effect of Group 1 herbicides (clethodim, fenoxaprop-p-ethyl, fluazifop-p-butyl, quizalofop-p-ethyl and sethoxydim) applied preplant (1 and 7 days prior to seeding) on corn injury, stand, growth and yield. There was no effect of the Group 1 herbicides on corn injury (7, 14, 28 and 56 DAE), corn stand, dry weight, height or yield.

3

TOLERANCE OF RR CORN TO GROUP 1 HERBICIDES APPLIED PREPLANT II (13, 14, 15)

CHRISTY SHROPSHIRE, PETER SIKKEMA EXPERIMENT ID: FC14A1B


Planting Method: CONV. Emerged On: Jun-4-14.

Expt. Design: FACTOR. Reps: 4. Plot Size: 2 m x 10 m.

Expt. Location: RC - Range N2. Site Description: Soil Texture: SCL. %OM: 5.9 %Sand: 52 %Silt: 28 %Clay: 20 pH: 6.4 CEC: 21.


Application: A B Application: A B

Date : May-23-14 May-29-14 Crop 1 ZEAMX

Time of Day: 07:20 09:00 Height : NOT PLNT NOT PLNT

Timing : PP 1 PP 2

Air Temp. : 16.7 C 19.5 C

% Humidity : 70.7 60.8

Wind Speed : 2.2 KM/H 1.8 KM/H

Dew Present: N Y

Soil Temp.: 16.0 C 15.1 C

Soil Moist.: MOIST MOIST

Cloud Cover: 80% 15%

Pressure : 207 207

Nozzle Type: LOW DRIFT LOW DRIFT

Nozzle Size: ULD120-02 ULD120-02

Noz.Spacing: 50 CM 50 CM

Boom Length: 1.5 M 1.5 M

Boom Height: 50 CM 50 CM

Carrier : WATER WATER

Appl.Volume: 200 L/ha 200 L/ha

Propellant : CO2 CO2

Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX Part Rated 10 PLA - Rating Date Jun-11-14 Jun-18-14 Jul-2-14 Jul-30-14 Jun-18-14 Jun-18-14 Jul-2-14 Nov-5-14 Nov-5-14 Rating Type INJURY INJURY INJURY INJURY STAND DRY WT AV HEIGHT YIELD YIELD Rating Unit % % % % #/1M G/1M CM T/HA BU/AC Crop Stage Majority V1 V3-V4 V7-V8 R1 ROW ROW Crop Stage Scale 15-20 CM 25-35 CM 1.1-1.3M 2.8-3.2M Footnote Number 1 1 Trt-Eval Interval 7 DAE 14 DAE 28 DAE 56 DAE 14 DAE 14 DAE 28 DAE Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 10 11 TABLE OF R MEANS Replicate 1 1 0 0 0 6.1 6.4 120 16.45 262.2 Replicate 2 0 0 0 0 5.7 7.0 128 17.16 273.3 Replicate 3 0 1 0 0 6.7 9.2 127 17.48 278.5 Replicate 4 0 0 0 0 6.1 7.5 126 16.81 267.8 TABLE OF A () MEANS

1 Apply 7 days before seeding PP 1 A 0 0 a 0 0 6.1 7.6 126 16.94 269.9 2 Apply 1 day before seeding PP 2 B 1 1 b 0 0 6.2 7.5 125 17.01 271.0

LSD= NS 0 NS NS NS NS NS NS NS TABLE OF B () MEANS

1 Untreated control 0 a 0 a 0 0 6.8 8.2 126 17.35 276.4 2 clethodim 240 EC 30 g AI/ha 0 a 0 a 0 0 6.0 6.6 125 16.97 270.4 2 Amigo 1000 SL 0.50 % V/V 3 clethodim 240 EC 60 g AI/ha 1 b 1 b 0 0 5.8 6.5 124 16.32 260.1 3 Amigo 1000 SL 0.50 % V/V 4 fenoxaprop-p-ethyl 80.5 EC 54 g AI/ha 0 a 0 a 0 0 5.6 7.5 127 17.07 272.0 5 fenoxaprop-p-ethyl 80.5 EC 108 g AI/ha 0 a 0 a 0 0 6.8 8.6 126 17.04 271.5 6 fluazifop-p-butyl 125 EC 75 g AI/ha 0 a 0 a 0 0 6.4 7.7 126 16.94 269.8 7 fluazifop-p-butyl 125 EC 150 g AI/ha 1 b 1 b 0 0 6.3 6.3 121 16.86 268.6 8 quizalifop-p-ethyl 96 EC 36 g AI/ha 0 a 0 a 0 0 6.0 8.2 128 17.29 275.5 8 Sure-Mix 1000 SL 0.50 % V/V 9 quizalifop-p-ethyl 96 EC 72 g AI/ha 0 a 0 a 0 0 6.1 8.3 126 16.54 263.4 9 Sure-Mix 1000 SL 0.50 % V/V

10 sethoxydim 450 EC 150 g AI/ha 0 a 0 a 0 0 6.0 7.8 127 17.24 274.7 10 Merge 1000 SL 1.00 L/ha 11 sethoxydim 450 EC 300 g AI/ha 2 c 2 c 0 0 6.0 7.2 123 17.09 272.3 11 Merge 1000 SL 1.00 L/ha

LSD= 1 0 NS NS NS NS NS NS NS TABLE OF A () B () MEANS

1 Apply 7 days before seeding PP 1 A 0 0 a 0 0 6.5 8.1 129 17.36 276.6 1 Untreated control 2 Apply 1 day before seeding PP 2 B 0 0 a 0 0 7.0 8.3 124 17.33 276.2 1 Untreated control 1 Apply 7 days before seeding PP 1 A 0 0 a 0 0 6.5 7.7 128 16.82 268.0 2 clethodim 240 EC 30 g AI/ha 2 Amigo 1000 SL 0.50 % V/V 2 Apply 1 day before seeding PP 2 B 1 1 b 0 0 5.5 5.6 122 17.13 272.9 2 clethodim 240 EC 30 g AI/ha 2 Amigo 1000 SL 0.50 % V/V

4

TOLERANCE OF RR CORN TO GROUP 1 HERBICIDES APPLIED PREPLANT I (13, 14, 15)

CHRISTY SHROPSHIRE, PETER SIKKEMA EXPERIMENT ID: FC14A1B

Crop Code ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX ZEAMX Part Rated 10 PLA - Rating Date Jun-11-14 Jun-18-14 Jul-2-14 Jul-30-14 Jun-18-14 Jun-18-14 Jul-2-14 Nov-5-14 Nov-5-14 Rating Type INJURY INJURY INJURY INJURY STAND DRY WT AV HEIGHT YIELD YIELD Rating Unit % % % % #/1M G/1M CM T/HA BU/AC Crop Stage Majority V1 V3-V4 V7-V8 R1 ROW ROW Crop Stage Scale 15-20 CM 25-35 CM 1.1-1.3M 2.8-3.2M Footnote Number 1 1 Trt-Eval Interval 7 DAE 14 DAE 28 DAE 56 DAE 14 DAE 14 DAE 28 DAE Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 10 11

1 Apply 7 days before seeding PP 1 A 0 0 a 0 0 5.5 7.2 127 16.85 268.4 3 clethodim 240 EC 60 g AI/ha 3 Amigo 1000 SL 0.50 % V/V 2 Apply 1 day before seeding PP 2 B 2 2 b 0 0 6.0 5.9 120 15.80 251.7 3 clethodim 240 EC 60 g AI/ha 3 Amigo 1000 SL 0.50 % V/V 1 Apply 7 days before seeding PP 1 A 0 0 a 0 0 5.0 6.0 126 16.79 267.5 4 fenoxaprop-p-ethyl 80.5 EC 54 g AI/ha 2 Apply 1 day before seeding PP 2 B 0 0 a 0 0 6.3 8.9 128 17.35 276.5 4 fenoxaprop-p-ethyl 80.5 EC 54 g AI/ha 1 Apply 7 days before seeding PP 1 A 0 0 a 0 0 6.8 8.3 125 16.82 268.0 5 fenoxaprop-p-ethyl 80.5 EC 108 g AI/ha 2 Apply 1 day before seeding PP 2 B 0 0 a 0 0 6.8 8.9 126 17.26 274.9 5 fenoxaprop-p-ethyl 80.5 EC 108 g AI/ha 1 Apply 7 days before seeding PP 1 A 0 0 a 0 0 6.3 7.6 128 16.85 268.4 6 fluazifop-p-butyl 125 EC 75 g AI/ha 2 Apply 1 day before seeding PP 2 B 0 0 a 0 0 6.5 7.8 124 17.03 271.2 6 fluazifop-p-butyl 125 EC 75 g AI/ha 1 Apply 7 days before seeding PP 1 A 1 0 a 0 0 6.0 6.0 120 16.81 267.7 7 fluazifop-p-butyl 125 EC 150 g AI/ha 2 Apply 1 day before seeding PP 2 B 2 2 b 0 0 6.5 6.6 122 16.92 269.5 7 fluazifop-p-butyl 125 EC 150 g AI/ha 1 Apply 7 days before seeding PP 1 A 0 0 a 0 0 6.3 8.2 128 17.23 274.5 8 quizalifop-p-ethyl 96 EC 36 g AI/ha 8 Sure-Mix 1000 SL 0.50 % V/V 2 Apply 1 day before seeding PP 2 B 0 0 a 0 0 5.8 8.2 129 17.36 276.5 8 quizalifop-p-ethyl 96 EC 36 g AI/ha 8 Sure-Mix 1000 SL 0.50 % V/V 1 Apply 7 days before seeding PP 1 A 0 0 a 0 0 6.3 8.8 126 16.62 264.7 9 quizalifop-p-ethyl 96 EC 72 g AI/ha 9 Sure-Mix 1000 SL 0.50 % V/V 2 Apply 1 day before seeding PP 2 B 0 0 a 0 0 6.0 7.7 125 16.45 262.1 9 quizalifop-p-ethyl 96 EC 72 g AI/ha 9 Sure-Mix 1000 SL 0.50 % V/V 1 Apply 7 days before seeding PP 1 A 0 0 a 0 0 6.3 8.4 126 17.09 272.3

10 sethoxydim 450 EC 150 g AI/ha 10 Merge 1000 SL 1.00 L/ha

2 Apply 1 day before seeding PP 2 B 0 0 a 0 0 5.8 7.2 127 17.39 277.1 10 sethoxydim 450 EC 150 g AI/ha 10 Merge 1000 SL 1.00 L/ha

1 Apply 7 days before seeding PP 1 A 2 2 a 0 0 6.0 7.2 121 17.11 272.6 11 sethoxydim 450 EC 300 g AI/ha 11 Merge 1000 SL 1.00 L/ha

2 Apply 1 day before seeding PP 2 B 2 2 a 0 0 6.0 7.2 124 17.07 271.9 11 sethoxydim 450 EC 300 g AI/ha 11 Merge 1000 SL 1.00 L/ha

LSD= NS 1 NS NS NS NS NS NS NS

Column 1 & 2 Footnote: BLEACHED SPOT ON LEAF 2-3. Conclusions:

This experiment was established to determine the effect of Group 1 herbicides (clethodim, fenoxaprop-p-ethyl, fluazifop-p-butyl, quizalofop-p-ethyl and sethoxydim) applied preplant (1 and 7 days prior to seeding) on corn injury, stand, growth and yield. There was no commercially significant effect of the Group 1 herbicides on corn injury (7, 14, 28 and 56 DAE), corn stand, dry weight, height or yield.

5

WEED CONTROL WITH PYROXASULFONE + CARFENTRAZONE AND F9312-4 IN NO-TILL CORN.

CHRISTY SHROPSHIRE, PETER SIKKEMA EXPERIMENT ID: FC14A2


Planting Method: NT PLA. Emerged On: Jun-5-14.

Expt. Design: RACOBL. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range L7-A.

Site Description: Soil Texture: SCL. %OM: 5.3 %Sand: 52.4 %Silt: 26.3 %Clay: 21.3 pH: 6.8 CEC: 13.


Application: A Application: A

Date : May-28-14 Crop 1 ZEAMX

Time of Day: 12:30 Height : NOT PLNT

Timing : PP

Air Temp. : 22.7 C Weed 1 ABUTH NOT EM

% Humidity : 71.4 Height:

Wind Speed : 1.2 KM/H Density :

Dew Present: N Weed 2 AMAPO NOT EM

Soil Temp.: 22.3 C Height:

Soil Moist.: MOIST Density :

Cloud Cover: 75% Weed 3 AMBEL NOT EM

Equipment : Height:

Pressure : 207 Density :

Nozzle Type: LOW DRIFT Weed 4 CHEAL NOT EM

Nozzle Size: ULD120-02 Height:

Noz.Spacing: 50 CM Density :

Boom Length: 2 M Weed 5 SETFA NOT EM

Boom Height: 50 CM Height:

Carrier : WATER Density :

Appl.Volume: 200 L/ha

Propellant : CO2

Pest Code ABUTH AMAPO AMBEL CHEAL SETFA ABUTH AMAPO Crop Code ZEAMX ZEAMX ZEAMX Rating Date Jun-12-14 Jun-19-14 Jul-3-14 Jun-12-14 Jun-12-14 Jun-12-14 Jun-12-14 Jun-12-14 Jun-19-14 Jun-19-14 Rating Type INJURY INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % % Crop Stage Majority V1-V2 V4-V5 V6-V7 Crop Stage Scale 15-20 CM 30-40 CM 95-110CM Pest Stage Majority C-3 LF 2-6 LF C-4 LF C-6 LF 2-4 LF 3-5 LF 3-20+ LF Pest Density, Unit 1 /M2 36 /M2 9.5 /M2 22 /M2 17 /M2 8.5 /M2 27 /M2 Trt-Eval Interval 7 DAE 14 DAE 28 DAE 7 DAE 7 DAE 7 DAE 7 DAE 7 DAE 14 DAE 14 DAE Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 8 9 10

1 Weedy check 0 a 0 a 0 a 0 d 0 e 0 e 0 e 0 e 0 f 0 g 2 pyroxasulfone 85 WG 100 g AI/ha PP A 0 a 0 a 0 a 0 d 53 d 0 e 53 d 12 de 23 e 60 e carfentrazone 240 EC 12 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

3 pyroxasulfone 85 WG 125 g AI/ha PP A 0 a 0 a 0 a 23 c 70 c 26 d 73 c 58 c 44 cd 70 cde carfentrazone 240 EC 15 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

4 pyroxasulfone 85 WG 150 g AI/ha PP A 0 a 0 a 0 a 65 b 93 a 50 c 90 ab 74 b 68 ab 82 b carfentrazone 240 EC 18 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

5 F9312-4 507 SE 112 g AI/ha PP A 0 a 0 a 0 a 0 d 50 d 0 e 56 d 19 d 21 e 48 f Agral 90 1000 SL 0.25 % V/V PP A

6 F9312-4 507 SE 140 g AI/ha PP A 0 a 0 a 0 a 30 c 69 c 35 d 73 c 56 c 40 d 63 de Agral 90 1000 SL 0.25 % V/V PP A

7 F9312-4 507 SE 168 g AI/ha PP A 0 a 0 a 0 a 63 b 88 ab 55 bc 90 ab 74 b 56 bc 76 bc Agral 90 1000 SL 0.25 % V/V PP A

8 F9310-7 515 SC 129 g AI/ha PP A 0 a 0 a 0 a 68 b 80 bc 63 b 81 bc 68 bc 68 ab 71 bcd Agral 90 1000 SL 0.25 % V/V PP A

9 F9316-2 540 SC 1109 g AI/ha PP A 0 a 0 a 0 a 89 a 97 a 92 a 98 a 80 ab 83 a 94 a Agral 90 1000 SL 0.25 % V/V PP A

10 s-metolachlor/atrazine 720 SC 2520 g AI/ha PP A 0 a 0 a 0 a 92 a 99 a 88 a 99 a 93 a 75 a 96 a 11 s-metolachlor 915 EC 1370 g AI/ha PP A 0 a 0 a 0 a 0 d 80 bc 0 e 0 e 76 b 0 f 81 b

LSD (P=.05) 0.0 0.0 0.0 12.7 11.4 9.4 10.7 16.1 16.2 11.0 Standard Deviation 0.0 0.0 0.0 8.8 7.9 6.5 7.4 11.1 11.2 7.6 CV 0.0 0.0 0.0 22.54 11.19 17.58 11.45 20.1 25.84 11.34

6



Pest Code AMBEL CHEAL SETFA ABUTH AMAPO AMBEL CHEAL SETFA ABUTH

Crop Code ZEAMX Rating Date Jun-19-14 Jun-19-14 Jun-19-14 Jul-3-14 Jul-3-14 Jul-3-14 Jul-3-14 Jul-3-14 Jul-31-14 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % Crop Stage Majority R1 Crop Stage Scale 2-2.6M Pest Stage Majority 4-20+LF 2-14 LF 3-6 LF 4-7 LF 12-20+LF 20+LF 4-20+LF 4-7 TIL FLWR Pest Density, Unit 7.5 /M2 59 /M2 24 /M2 6.5 /M2 28 /M2 6 /M2 62 /M2 43 /M2 1 /M2 Trt-Eval Interval 14 DAE 14 DAE 14 DAE 28 DAE 28 DAE 28 DAE 28 DAE 28 DAE 56 DAE Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 11 12 13 14 15 16 17 18 19

1 Weedy check 0 c 0 f 0 e 0 c 0 e 0 c 0 e 0 d 0 d 2 pyroxasulfone 85 WG 100 g AI/ha PP A 0 c 58 de 28 d 0 c 23 d 0 c 21 d 0 d 0 d carfentrazone 240 EC 12 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

3 pyroxasulfone 85 WG 125 g AI/ha PP A 0 c 71 bc 49 c 0 c 39 c 0 c 33 cd 0 d 3 cd carfentrazone 240 EC 15 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

4 pyroxasulfone 85 WG 150 g AI/ha PP A 23 b 78 b 76 ab 5 c 60 b 0 c 43 bc 20 b 5 bcd carfentrazone 240 EC 18 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

5 F9312-4 507 SE 112 g AI/ha PP A 0 c 51 e 20 d 0 c 23 d 0 c 20 d 0 d 5 bcd Agral 90 1000 SL 0.25 % V/V PP A

6 F9312-4 507 SE 140 g AI/ha PP A 0 c 63 cde 53 c 0 c 43 c 0 c 33 cd 0 d 0 d Agral 90 1000 SL 0.25 % V/V PP A

7 F9312-4 507 SE 168 g AI/ha PP A 18 b 71 bc 64 bc 3 c 63 b 0 c 49 b 15 bc 8 bcd Agral 90 1000 SL 0.25 % V/V PP A

8 F9310-7 515 SC 129 g AI/ha PP A 26 b 68 bcd 54 c 26 b 34 cd 0 c 31 cd 5 cd 20 ab Agral 90 1000 SL 0.25 % V/V PP A

9 F9316-2 540 SC 1109 g AI/ha PP A 74 a 93 a 79 ab 40 a 90 a 39 b 86 a 24 b 33 a Agral 90 1000 SL 0.25 % V/V PP A

10 s-metolachlor/atrazine 720 SC 2520 g AI/ha PP A 83 a 96 a 92 a 49 a 93 a 70 a 89 a 60 a 19 abc 11 s-metolachlor 915 EC 1370 g AI/ha PP A 0 c 0 f 80 ab 0 c 73 b 0 c 0 e 69 a 0 d

LSD (P=.05) 11.8 11.9 17.6 12.4 14.0 12.8 13.8 14.4 17.3 Standard Deviation 8.2 8.3 12.2 8.6 9.7 8.8 9.5 9.9 12.0 CV 40.56 14.05 22.63 76.84 19.9 89.42 25.99 56.83 144.11

7



Pest Code AMAPO AMBEL CHEAL SETFA Crop Code ZEAMX ZEAMX Rating Date Jul-31-14 Jul-31-14 Jul-31-14 Jul-31-14 Nov-3-14 Nov-3-14 Rating Type CONTROL CONTROL CONTROL CONTROL YIELD YIELD Rating Unit % % % % T/HA BU/AC Pest Stage Majority 12L-BUD 12L-BUD 2L-BUD 3TL-FLWR Pest Density, Unit 22 /M2 8 /M2 22 /M2 18 /M2 Trt-Eval Interval 56 DAE 56 DAE 56 DAE 56 DAE 159 DA-A 159 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 20 21 22 23 26 27

1 Weedy check 0 e 0 b 0 c 0 b 5.27 e 84.0 e 2 pyroxasulfone 85 WG 100 g AI/ha PP A 23 d 0 b 18 bc 0 b 6.97 cde 111.0 cde carfentrazone 240 EC 12 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

3 pyroxasulfone 85 WG 125 g AI/ha PP A 36 cd 0 b 28 b 0 b 7.14 cde 113.7 cde carfentrazone 240 EC 15 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

4 pyroxasulfone 85 WG 150 g AI/ha PP A 48 bc 3 b 28 b 5 b 8.03 bcd 128.0 bcd carfentrazone 240 EC 18 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

5 F9312-4 507 SE 112 g AI/ha PP A 25 d 0 b 13 bc 0 b 5.80 de 92.5 de Agral 90 1000 SL 0.25 % V/V PP A

6 F9312-4 507 SE 140 g AI/ha PP A 41 cd 0 b 30 b 0 b 6.79 cde 108.1 cde Agral 90 1000 SL 0.25 % V/V PP A

7 F9312-4 507 SE 168 g AI/ha PP A 55 bc 0 b 28 b 5 b 8.48 abc 135.1 abc Agral 90 1000 SL 0.25 % V/V PP A

8 F9310-7 515 SC 129 g AI/ha PP A 20 de 0 b 11 bc 0 b 6.68 cde 106.4 cde Agral 90 1000 SL 0.25 % V/V PP A

9 F9316-2 540 SC 1109 g AI/ha PP A 90 a 23 a 85 a 0 b 9.96 ab 158.6 ab Agral 90 1000 SL 0.25 % V/V PP A

10 s-metolachlor/atrazine 720 SC 2520 g AI/ha PP A 92 a 23 a 88 a 43 a 10.77 a 171.6 a 11 s-metolachlor 915 EC 1370 g AI/ha PP A 66 b 0 b 0 c 13 b 5.93 de 94.5 de

LSD (P=.05) 22.4 15.0 24.1 18.6 2.409 38.38 Standard Deviation 15.5 10.4 16.7 12.9 1.668 26.58 CV 34.53 239.85 56.29 217.58 22.43 22.43

Conclusions:

This experiment was established to determine the level of injury in corn and the weed control efficacy of pyroxasulfone (100, 125 or 150 g/ha), carfentrazone (12, 15 or 18 g/ha), F9312-4 (112, 140 or 168 g/ha), F9310-7 (129 g/ha) and F9316-2 (1109 g/ha). These herbicides were compared to s-metolachlor (1370 g/ha) and s-metolachlor/atrazine (2520 g/ha). The corn was seeded on May 30 and the herbicide was applied preplant on May 28. The first significant rain event was on June 18 (18.8 mm). The 21 days between herbicide application and the first significant rain event may have influenced the level of weed control with the preplant herbicides evaluated. At 7, 14 and 28 DAE, there was no visible injury in corn from the herbicide treatments evaluated. At 7 DAE, pyroxasulfone (100 g/ha) plus carfentrazone (12 g/ha) provided poor control of velvetleaf, green pigweed, common ragweed, lamb’s-quarters and giant foxtail. Increasing the rate did result in improved weed control, with the high rate providing excellent control of green pigweed and lamb’s-quarters, fair control of velvetleaf and giant foxtail and poor control of common ragweed. F9312-4 and the tankmix of pyroxasulfone plus carfentrazone provided statistically equivalent weed control. F9310-7 provided good control of green pigweed and lamb’s-quarters and fair control of velvetleaf, common ragweed and giant foxtail. F9316-2 provided excellent control of green pigweed, common ragweed and lamb’s-quarters and good control of velvetleaf and giant foxtail. S-metolachlor/atrazine provided excellent control of all the weed species evaluated with the exception of common ragweed. S-metolachlor had no activity on velvetleaf, common ragweed and lamb’s-quarters and provided fair control of green pigweed and giant foxtail. F9312-4 and the tankmix of pyroxasulfone plus carfentrazone generally provided statistically equivalent weed control at 14, 28 and 56 DAE. At 56 DAE, the control was poor for all weed species evaluated. At 56 DAE, F9310-7 provided poor control of all the weed species evaluated. At 56 DAE, both F9316-2 and s-metolachlor/atrazine provided excellent control of green pigweed, good control of lamb’s-quarters and poor control of velvetleaf, common ragweed and giant foxtail. S-metolachlor applied alone did not provide commercially acceptable control of the weed species present in this experiment at 56 DAE. Generally, corn yield reflected the level of weed control.

8

WEED CONTROL WITH PYROXASULFONE AND FLUTHIACET-METHYL IN NO-TILL CORN




Expt. Design: RACOBL. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range L7-A.




Date : May-28-14 Crop 1 ZEAMX

Time of Day: 13:00 Height : NOT PLNT

Timing : PP

Air Temp. : 19.5 C Weed 1 ABUTH NOT EM

% Humidity : 79.3 Height:

Wind Speed : 3.2 KM/H Density :




Cloud Cover: 100% Weed 3 AMBEL NOT EM

Equipment : Height:

Pressure : 207 Density :

Nozzle Type: LOW DRIFT Weed 4 CHEAL NOT EM

Nozzle Size: ULD120-02 Height:

Noz.Spacing: 50 CM Density :

Boom Length: 2 M Weed 5 SETFA NOT EM

Boom Height: 50 CM Height:

Carrier : WATER Density :


Propellant : CO2

Pest Code ABUTH AMAPO AMBEL CHEAL SETFA ABUTH Crop Code ZEAMX ZEAMX ZEAMX Rating Date Jun-12-14 Jun-19-14 Jul-3-14 Jun-12-14 Jun-12-14 Jun-12-14 Jun-12-14 Jun-12-14 Jun-19-14 Rating Type INJURY INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % Crop Stage Majority V2 V4-V5 V6-V7 Crop Stage Scale 20-25 CM 30-40 CM 95-110CM Pest Stage Majority C-3 LF C-8 LF C-2 LF C-14 LF 2-4 LF C-5 LF Pest Density, Unit 25 /M2 70 /M2 12.5/M2 22 /M2 7 /M2 18 /M2 Trt-Eval Interval 7 DAE 14 DAE 28 DAE 7 DAE 7 DAE 7 DAE 7 DAE 7 DAE 14 DAE Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 8 9

1 Weedy check 0 a 0 a 0 a 0 f 0 g 0 f 0 g 0 h 0 f 2 F9140-8 (fluthiacet-methyl) 216 SC 3 g AI/ha PP A 0 a 0 a 0 a 0 f 0 g 0 f 0 g 2 h 0 f Agral 90 1000 SL 0.25 % V/V PP A

3 F9140-8 (fluthiacet-methyl) 216 SC 3.76 g AI/ha PP A 0 a 0 a 0 a 0 f 0 g 0 f 0 g 0 h 0 f Agral 90 1000 SL 0.25 % V/V PP A

4 F9140-8 (fluthiacet-methyl) 216 SC 4.5 g AI/ha PP A 0 a 0 a 0 a 0 f 0 g 0 f 0 g 0 h 0 f Agral 90 1000 SL 0.25 % V/V PP A

5 pyroxasulfone 85 WG 100 g AI/ha PP A 0 a 0 a 0 a 0 f 38 f 0 f 0 g 5 gh 15 e 6 pyroxasulfone 85 WG 125 g AI/ha PP A 0 a 0 a 0 a 3 f 50 e 5 ef 33 de 23 efg 23 de 7 pyroxasulfone 85 WG 150 g AI/ha PP A 0 a 0 a 0 a 23 cd 71 cd 18 cd 53 c 33 de 35 c 8 F9140-8 (fluthiacet-methyl) 216 SC 3 g AI/ha PP A 0 a 0 a 0 a 6 ef 36 f 5 ef 18 f 5 gh 21 de pyroxasulfone 85 WG 100 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

9 F9140-8 (fluthiacet-methyl) 216 SC 3.76 g AI/ha PP A 0 a 0 a 0 a 25 cd 63 d 18 cd 38 d 11 fgh 30 cd pyroxasulfone 85 WG 125 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

10 F9140-8 (fluthiacet-methyl) 216 SC 4.5 g AI/ha PP A 0 a 0 a 0 a 58 b 76 bc 30 b 63 bc 40 cde 49 b pyroxasulfone 85 WG 150 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

11 F9310-7 515 SC 103 g AI/ha PP A 0 a 0 a 0 a 18 de 40 f 8 ef 23 ef 8 gh 13 e Agral 90 1000 SL 0.25 % V/V PP A

12 F9310-7 515 SC 128.76 g AI/ha PP A 0 a 0 a 0 a 31 c 63 d 13 de 54 c 28 def 35 c Agral 90 1000 SL 0.25 % V/V PP A

13 F9310-7 515 SC 154.5 g AI/ha PP A 0 a 0 a 0 a 63 b 81 b 25 bc 71 b 43 cd 54 b Agral 90 1000 SL 0.25 % V/V PP A

14 F9310-7 515 SC 103 g AI/ha PP A 0 a 0 a 0 a 90 a 98 a 81 a 98 a 63 b 86 a atrazine 480 SC 1000 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

15 s-metolachlor/atrazine 720 SC 2520 g AI/ha PP A 0 a 0 a 0 a 94 a 98 a 78 a 99 a 91 a 89 a 16 s-metolachlor 915 EC 1370 g AI/ha PP A 0 a 0 a 0 a 0 f 69 cd 0 f 0 g 59 bc 0 f


9



Pest Code AMAPO AMBEL CHEAL SETFA ABUTH AMAPO AMBEL CHEAL SETFA Rating Date Jun-19-14 Jun-19-14 Jun-19-14 Jun-19-14 Jul-3-14 Jul-3-14 Jul-3-14 Jul-3-14 Jul-3-14 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % Pest Stage Majority 1-11 LF C-10 LF C-20+LF 3L-3TIL 4-8 LF 20+-FLWR 10-20+L 4-20+LF 5L-6TIL Pest Density, Unit 34 M2 16 /M2 43 /M2 15 /M2 20 /M2 20 /M2 16 /M2 37 /M2 33 /M2 Trt-Eval Interval 14 DAE 14 DAE 14 DAE 14 DAE 28 DAE 28 DAE 28 DAE 28 DAE 28 DAE Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 10 11 12 13 14 15 16 17 18

1 Weedy check 0 g 0 d 0 f 0 i 0 d 0 f 0 c 0 e 0 d 2 F9140-8 (fluthiacet-methyl) 216 SC 3 g AI/ha PP A 0 g 0 d 0 f 0 i 0 d 0 f 0 c 0 e 0 d Agral 90 1000 SL 0.25 % V/V PP A

3 F9140-8 (fluthiacet-methyl) 216 SC 3.76 g AI/ha PP A 0 g 0 d 0 f 0 i 0 d 0 f 0 c 0 e 0 d Agral 90 1000 SL 0.25 % V/V PP A

4 F9140-8 (fluthiacet-methyl) 216 SC 4.5 g AI/ha PP A 0 g 0 d 0 f 0 i 0 d 0 f 0 c 0 e 0 d Agral 90 1000 SL 0.25 % V/V PP A

5 pyroxasulfone 85 WG 100 g AI/ha PP A 31 ef 0 d 3 f 15 h 0 d 24 de 0 c 0 e 0 d 6 pyroxasulfone 85 WG 125 g AI/ha PP A 48 d 14 c 29 de 28 fgh 0 d 39 c 0 c 8 cde 0 d 7 pyroxasulfone 85 WG 150 g AI/ha PP A 64 bc 24 b 41 bc 38 ef 0 d 53 b 0 c 18 b 10 cd 8 F9140-8 (fluthiacet-methyl) 216 SC 3 g AI/ha PP A 44 de 0 d 18 e 18 gh 0 d 20 e 0 c 0 e 0 d pyroxasulfone 85 WG 100 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

9 F9140-8 (fluthiacet-methyl) 216 SC 3.76 g AI/ha PP A 50 d 13 c 24 de 30 efg 0 d 24 de 0 c 3 de 0 d pyroxasulfone 85 WG 125 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

10 F9140-8 (fluthiacet-methyl) 216 SC 4.5 g AI/ha PP A 68 b 26 b 45 b 41 de 0 d 43 bc 0 c 5 cde 8 cd pyroxasulfone 85 WG 150 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

11 F9310-7 515 SC 103 g AI/ha PP A 30 f 3 d 18 e 16 h 0 d 15 e 0 c 0 e 0 d Agral 90 1000 SL 0.25 % V/V PP A

12 F9310-7 515 SC 128.76 g AI/ha PP A 56 bcd 15 c 33 cd 40 def 0 d 35 cd 0 c 13 bc 0 d Agral 90 1000 SL 0.25 % V/V PP A

13 F9310-7 515 SC 154.5 g AI/ha PP A 69 b 30 b 50 b 51 cd 18 c 43 bc 0 c 11 bcd 13 c Agral 90 1000 SL 0.25 % V/V PP A

14 F9310-7 515 SC 103 g AI/ha PP A 95 a 78 a 95 a 63 bc 38 b 90 a 35 a 86 a 8 cd atrazine 480 SC 1000 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

15 s-metolachlor/atrazine 720 SC 2520 g AI/ha PP A 95 a 82 a 96 a 91 a 50 a 80 a 26 b 83 a 76 a 16 s-metolachlor 915 EC 1370 g AI/ha PP A 53 cd 0 d 0 f 68 b 0 d 26 de 0 c 0 e 38 b


10



Pest Code ABUTH AMAPO AMBEL CHEAL SETFA Crop Code ZEAMX ZEAMX Rating Date Jul-31-14 Jul-31-14 Jul-31-14 Jul-31-14 Jul-31-14 Nov-3-14 Nov-3-14 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL YIELD YIELD Rating Unit % % % % % T/HA BU/AC Crop Stage Majority V15-VT Crop Stage Scale 2-2.6M Pest Stage Majority BUD-FLWR 20+-FLWR 6-20+LF 4L-BUD FLWR Pest Density, Unit 3.5 /M2 21 /M2 7.5 /M2 24 /M2 13 /M2 Trt-Eval Interval 56 DAE 56 DAE 56 DAE 56 DAE 56 DAE 159 DA-A 159 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 19 20 21 22 23 26 27

1 Weedy check 0 b 0 g 0 b 0 c 0 b 4.59 i 73.1 i 2 F9140-8 (fluthiacet-methyl) 216 SC 3 g AI/ha PP A 0 b 0 g 0 b 0 c 0 b 5.82 hi 92.8 hi Agral 90 1000 SL 0.25 % V/V PP A

3 F9140-8 (fluthiacet-methyl) 216 SC 3.76 g AI/ha PP A 0 b 0 g 0 b 0 c 0 b 5.50 i 87.7 i Agral 90 1000 SL 0.25 % V/V PP A

4 F9140-8 (fluthiacet-methyl) 216 SC 4.5 g AI/ha PP A 0 b 0 g 0 b 0 c 0 b 5.97 ghi 95.1 ghi Agral 90 1000 SL 0.25 % V/V PP A

5 pyroxasulfone 85 WG 100 g AI/ha PP A 0 b 15 ef 0 b 0 c 0 b 7.14 fgh 113.8 fgh 6 pyroxasulfone 85 WG 125 g AI/ha PP A 0 b 36 b 0 b 0 c 0 b 8.48 c-f 135.1 c-f 7 pyroxasulfone 85 WG 150 g AI/ha PP A 0 b 38 b 0 b 10 b 0 b 9.17 cd 146.2 cd 8 F9140-8 (fluthiacet-methyl) 216 SC 3 g AI/ha PP A 0 b 19 de 0 b 5 bc 0 b 8.00 def 127.4 def pyroxasulfone 85 WG 100 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

9 F9140-8 (fluthiacet-methyl) 216 SC 3.76 g AI/ha PP A 0 b 20 cde 0 b 3 bc 0 b 7.62 def 121.4 def pyroxasulfone 85 WG 125 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

10 F9140-8 (fluthiacet-methyl) 216 SC 4.5 g AI/ha PP A 0 b 35 b 0 b 0 c 0 b 9.59 bc 152.9 bc pyroxasulfone 85 WG 150 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

11 F9310-7 515 SC 103 g AI/ha PP A 0 b 5 fg 0 b 0 c 0 b 7.46 efg 118.8 efg Agral 90 1000 SL 0.25 % V/V PP A

12 F9310-7 515 SC 128.76 g AI/ha PP A 0 b 28 bcd 0 b 0 c 0 b 7.98 def 127.2 def Agral 90 1000 SL 0.25 % V/V PP A

13 F9310-7 515 SC 154.5 g AI/ha PP A 0 b 30 bc 0 b 0 c 0 b 8.91 cde 141.9 cde Agral 90 1000 SL 0.25 % V/V PP A

14 F9310-7 515 SC 103 g AI/ha PP A 28 a 85 a 23 a 73 a 0 b 11.34 a 180.7 a atrazine 480 SC 1000 g AI/ha PP A Agral 90 1000 SL 0.25 % V/V PP A

15 s-metolachlor/atrazine 720 SC 2520 g AI/ha PP A 43 a 78 a 0 b 78 a 18 a 10.81 ab 172.2 ab 16 s-metolachlor 915 EC 1370 g AI/ha PP A 0 b 18 de 0 b 0 c 0 b 7.23 fgh 115.2 fgh

LSD (P=.05) 15.0 11.1 10.3 8.5 7.4 1.554 24.76 Standard Deviation 10.5 7.8 7.2 6.0 5.2 1.088 17.33 CV 240.63 30.62 510.63 56.88 471.21 13.85 13.85

Conclusions: This experiment was established to determine the level of injury in corn and the weed control efficacy of F9140-8 (3, 3.76 and 4.5 g/ha), pyroxasulfone (100, 125 or 150 g/ha), F9310-7 (103, 128.76 or 154.5 g/ha), F9310-7 (103 g/ha) + atrazine (1000 g/ha) and tankmixes of F9140-9 + pyroxasulfone. These herbicides were compared to s-metolachlor (1370 g/ha) and s-metolachlor/atrazine (2520 g/ha). The preplant herbicides were applied on May 28, the corn was seeded on May 30 and emerged on June 5. The first significant rain event was on June 18 (18.8 mm). The 21 days between herbicide application and the first significant rain event may have influenced the level of weed control with the preplant herbicides evaluated. At 7, 14 and 28 DAE, there was no visible injury in corn from the herbicide treatments evaluated. At 7, 14, 28 and 56 DAE, F9140-8 (3, 3.76 and 4.5 g/ha) provided no control of velvetleaf, green pigweed, common ragweed, lamb’s-quarters and giant foxtail. At 7, 14, 28 and 56 DAE, pyroxasulfone (100, 125 and 150 g/ha) provided poor control of velvetleaf, green pigweed, common ragweed, lamb’s-quarters and giant foxtail. At 7, 14 and 28 DAE, the tankmixes of F89140-8 and pyroxasulfone and premix F9310-7 provided better control of velvetleaf, green pigweed, common ragweed, lamb’s-quarters and giant foxtail than the components applied alone, suggesting possible synergism between the two active ingredients. However, by 56 DAE both the tankmixes and premix provided poor control of velvetleaf, green pigweed, common ragweed, lamb’s-quarters and giant foxtail. At 56 DAE, F9310-7 + atrazine provided good control of green pigweed, fair control of lamb’s-quarters and poor control of velvetleaf, common ragweed and giant foxtail. S-metolachlor/atrazine provided fair control of green pigweed and lamb’s-quarters and poor control of velvetleaf, common ragweed and giant foxtail. S-metolachlor provided poor control of all the weed species evaluated in this study. Generally, corn yield reflected the level of weed control.

11

WEED MANAGEMENT IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A I

HOLLY BYKER, PETER SIKKEMA EXPERIMENT ID: FC14B2A

CROP: ZEAMX, Corn (RR and LL) (DKC 53-56). Planted: 5-26-14, 78800 S/H, 5 cm Deep, 75 cm Row Width. Planting Method: CONVEN.

Emerged On: 5-31-14.

Expt. Design: RACOBL. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range C7.

Site Description: Soil Texture: CL. %OM: 4.7 %Sand: 35.4 %Silt: 30.9 %Clay: 33.7 pH: 7.5 CEC: 15.3.



Date : 5-28-14 Crop 1 ZEAMX V6/7

Time of Day: 08:00 am Height : BBCH

Timing : PRE

Air Temp. : 17.6 C Weed 1 CHEAL 4lf

% Humidity : 81 Height: 8lf

Wind Speed : 0.9 kph Density : 34 M2

Dew Present: Y Weed 2 AMAPO 4lf

Soil Temp.: 20 C Height: 6lf

Soil Moist.: damp Density : 2.5 M2

Cloud Cover: 90% Weed 3 AMBEL 4lf

Equipment : Height: 8lf

Pressure : 207 Density : 6

Nozzle Type: LOW DRIFT Weed 4 SETVI 2till

Nozzle Size: ULD120-02 Height: 4till

Noz.Spacing: 50 CM Density : 7.5

Boom Length: 2 M

Boom Height: 50 CM

Carrier : WATER


Propellant : CO2

Pest Code AMBEL CHEAL Crop Code ZEAMX ZEAMX ZEAMX Rating Date 6-18-14 7-9-14 8-6-14 6-18-14 6-18-14 Rating Type INJURY INJURY INJURY CONTROL CONTROL Rating Unit % % % % % Crop Stage Majority V6 V12 R2 V6 V6 Pest Stage Majority 2-8lf cot-8lf Pest Density, Unit 6 M2 34 M2 Trt-Eval Interval 21 DA-A 42 DA-A 70 DA-A 21 DA-A 21 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5

1 Weedy control 0 a 0 a 0 a 0 c 0 b 2 meso/s-metol/atraz-A19414A 440 SC 2065 g AI/ha PRE A 0 a 0 a 0 a 30 a 13 ab 3 BIR/meso/s-meto/atraz-A19707A 412 SC 2022 g AI/ha PRE A 0 a 0 a 0 a 10 bc 13 ab 4 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 0 a 0 a 0 a 20 ab 25 a mesotrione 480 SC 140 g AI/ha PRE A

LSD (P=.05) 0.0 0.0 0.0 14.6 17.7 Standard Deviation 0.0 0.0 0.0 9.1 11.1 CV 0.0 0.0 0.0 60.86 88.44

Pest Code SETVI AMBEL CHEAL SETVI AMBEL Rating Date 6-18-14 7-9-14 7-9-14 7-9-14 8-6-14 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % Crop Stage Majority V6 V12 V12 V12 R2 Pest Stage Majority 4lf-4til 6-20+lf 12lf-20+ 3-6til 4lf-bud Pest Density, Unit 22 M2 11 M2 49 M2 29 M2 11 M2 Trt-Eval Interval 21 DA-A 42 DA-A 42 DA-A 42 DA-A 70 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 6 7 8 9 10

1 Weedy control 0 a 0 a 0 a 0 a 0 b 2 meso/s-metol/atraz-A19414A 440 SC 2065 g AI/ha PRE A 3 a 4 a 4 a 0 a 13 b 3 BIR/meso/s-meto/atraz-A19707A 412 SC 2022 g AI/ha PRE A 5 a 4 a 8 a 0 a 71 a 4 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 5 a 5 a 5 a 0 a 25 b mesotrione 480 SC 140 g AI/ha PRE A

LSD (P=.05) 10.7 6.1 8.2 0.0 27.8 Standard Deviation 6.7 3.8 5.2 0.0 16.6 CV 214.99 122.2 126.86 0.0 61.33

Means followed by same letter do not significantly differ (P=.05, LSD)

12

WEED MANAGEMENT IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A I


Pest Code CHEAL SETVI Crop Code ZEAMX ZEAMX Rating Date 8-6-14 8-6-14 11-3-14 11-3-14 Rating Type CONTROL CONTROL YIELD YIELD Rating Unit % % bus/ac ton/ha Crop Stage Majority R2 R2 Pest Stage Majority 2lf-bud flower Pest Density, Unit 46 M2 17 M2 Footnote Number 1 1 Trt-Eval Interval 70 DA-A 70 DA-A 159 DA-A 159 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 11 12 15 16

1 Weedy control 0 b 0 a 118.1 b 7.41 b 2 meso/s-metol/atraz-A19414A 440 SC 2065 g AI/ha PRE A 16 b 3 a 150.7 a 9.46 a 3 BIR/meso/s-meto/atraz-A19707A 412 SC 2022 g AI/ha PRE A 72 a 6 a 166.4 a 10.44 a 4 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 25 b 10 a 170.9 a 10.73 a mesotrione 480 SC 140 g AI/ha PRE A

LSD (P=.05) 29.8 10.7 29.14 1.829 Standard Deviation 17.8 6.4 18.22 1.144 CV 62.96 139.86 12.03 12.03

Means followed by same letter do not significantly differ (P=.05, LSD) Column 15 & 16 Footnote: Note: Fertilizer block in one hose on the spreader led to one strip not being fertilizer throughout the first rep. Conclusions: This experiment was established to determine the level of weed control with A19414A, A19707A and s-metolachlor/mesotrione/atrazine applied preemergence. The corn was seeded on May 26 and the herbicide was applied on May 28. The first significant rain event was on June 18 (18.8 mm). The 21 days between herbicide application and the first significant rain event probably influenced the level of weed control with the preemergence herbicides evaluated. At 21, 42 and 70 DAA, there was no visible injury in corn from the herbicide treatments evaluated. At 21 and 42 DAA, A19414A, A19707A and s-metolachlor/mesotrione/atrazine provided poor control of lamb’s-quarters, common ragweed and green foxtail. At 70 DAA, A19414A, and s-metolachlor/mesotrione/atrazine A19414A and s-metolachlor/mesotrione/atrazine provided poor control of lamb’s-quarters, common ragweed and green foxtail, interestingly, the control of lamb’s-quarters and common ragweed was much better with A19707A. This raises the following questions, does A19707A (bycyclopyrone) require less rainfall to activate or is it more efficacious on lamb’s-quarters and common ragweed? There was no difference in corn yield among the herbicide treatments evaluated.

13

WEED MANAGEMENT IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A II

CHRISTY SHROPSHIRE, PETER SIKKEMA EXPERIMENT ID: FC14B2B



Expt. Design: RACOBL. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range L7A.




Date : Jun-4-14 Crop 1 ZEAMX

Time of Day: 09:30 Height : NOT EM

Timing : PRE

Air Temp. : 24.2 C Weed 1 ABUTH C-1 LF

% Humidity : 60.9 Height: 2-3 CM

Wind Speed : 1.0 KM/H Density : 1.5 /M2




Cloud Cover: 100% Weed 3 AMBEL C-2 LF

Equipment : Height: 1-2 CM

Pressure : 207 Density : 9 /M2

Nozzle Type: LOW DRIFT Weed 4 CHEAL C-2 LF

Nozzle Size: ULD120-02 Height: 1-2 CM

Noz.Spacing: 50 CM Density : 8.5 /M2

Boom Length: 2 M Weed 5 SETFA 1-3 LF

Boom Height: 50 CM Height: 1-2 CM

Carrier : WATER Density : 2 /M2


Propellant : CO2

Pest Code ABUTH AMAPO AMBEL CHEAL SETFA ABUTH Crop Code ZEAMX ZEAMX ZEAMX Rating Date Jun-25-14 Jul-16-14 Aug-13-14 Jun-25-14 Jun-25-14 Jun-25-14 Jun-25-14 Jun-25-14 Jul-16-14 Rating Type INJURY INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % Crop Stage Majority V5 V11-V12 R1-R2 Crop Stage Scale 50-60CM 1.5-1.9M 2.1-2.6M Pest Stage Majority C-3 LF 4-20+LF 4-12 LF 4-8 LF 3-7 LF 2L-BUD Pest Density, Unit 2 /M2 22 /M2 9.5 /M2 16 /M2 24 /M2 1.5 /M2 Trt-Eval Interval 21 DA-A 42 DA-A 70 DA-A 21 DA-A 21 DA-A 21 DA-A 21 DA-A 21 DA-A 42 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 8 9

1 Weedy control 0 a 0 a 0 a 0 b 0 c 0 c 0 c 0 c 0 b 2 meso/s-metol/atraz-A19414A 440 SC 2065 g AI/ha PRE A 0 a 0 a 0 a 95 a 96 b 86 b 97 b 81 b 95 a

3 BIR/meso/s-meto/atraz-A19707A 412 SC 2022 g AI/ha PRE A 0 a 0 a 0 a 96 a 96 b 90 ab 96 b 88 a 94 a

4 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 0 a 0 a 0 a 96 a 99 a 93 a 99 a 90 a 96 a mesotrione 480 SC 140 g AI/ha PRE A


Pest Code AMAPO AMBEL CHEAL SETFA ABUTH AMAPO AMBEL CHEAL SETFA Rating Date Jul-16-14 Jul-16-14 Jul-16-14 Jul-16-14 Aug-13-14 Aug-13-14 Aug-13-14 Aug-13-14 Aug-13-14 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % Pest Stage Majority 20+L-BUD 20+LF 20+LF 3L-10TIL 7L-FLWR FLWR 20+L-FLW 5L-FLWR FLWR Pest Density, Unit 24 /M2 19 /M2 12 /M2 36 /M2 1 /M2 20 /M2 13 /M2 5.5 /M2 19 /M2 Trt-Eval Interval 42 DA-A 42 DA-A 42 DA-A 42 DA-A 70 DA-A 70 DA-A 70 DA-A 70 DA-A 70 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 10 11 12 13 14 15 16 17 18

1 Weedy control 0 b 0 c 0 c 0 b 0 b 0 b 0 b 0 b 0 b 2 meso/s-metol/atraz-A19414A 440 SC 2065 g AI/ha PRE A 95 a 81 b 96 b 59 a 96 a 96 a 74 a 96 a 50 a

3 BIR/meso/s-meto/atraz-A19707A 412 SC 2022 g AI/ha PRE A 94 a 88 a 95 b 64 a 94 a 95 a 83 a 96 a 51 a

4 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 97 a 86 ab 97 a 70 a 97 a 96 a 81 a 97 a 48 a mesotrione 480 SC 140 g AI/ha PRE A


14

WEED MANAGEMENT IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A II


Pest Code

Crop Code ZEAMX ZEAMX Rating Date Nov-3-14 Nov-3-14 Rating Type YIELD YIELD Rating Unit T/HA BU/AC Trt-Eval Interval 152 DA-A 152 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 21 22

1 Weedy control 6.08 b 96.8 b 2 meso/s-metol/atraz-A19414A 440 SC 2065 g AI/ha PRE A 12.91 a 205.7 a

3 BIR/meso/s-meto/atraz-A19707A 412 SC 2022 g AI/ha PRE A 12.79 a 203.7 a

4 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 12.85 a 204.7 a mesotrione 480 SC 140 g AI/ha PRE A

LSD (P=.05) 1.346 21.44 Standard Deviation 0.841 13.41 CV 7.54 7.54

Conclusions:

This experiment was established to determine the level of weed control with A19414A, A19707A and s-metolachlor/mesotrione/atrazine applied preemergence. At 21, 42 and 70 DAA, there was no visible injury in corn from the herbicide treatments evaluated. At 70 DAA, A19414A, A19707A and s-metolachlor/atrazine + mesotrione provided excellent control of ABUTH, AMAPO and CHEAL, fair to good control of AMBEL and poor control of SETFA. There was no difference in corn yield among the herbicide treatments evaluated.

15

WEED MANAGEMENT STRATEGIES IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A APPLIED PRE, EPOST AND LPOST I


CROP: ZEAMX, Corn (RR and LL) (DKC 53-56). Planted: 5-26-14, 78800 S/ha, 5 cm Deep, 75 cm Row Width. Planting Method: CONVEN.

Emerged On: 6-7-14.

Expt. Design: RACOBL. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range C7.

Site Description: Soil Texture: CL. %OM: 4.7 %Sand: 35.4 %Silt: 30.9 %Clay: 33.7 pH: 7.5 CEC: 15.3.


Application: A B C Application: A B C

Date : 5-28-14 6-9-14 6-17-14 Crop 1 ZEAMX PRE V1 V5-V6

Time of Day: 8:15 am 7:00 am Height : BBCH BBCH BBCH

Timing : PRE POST 1 POST 2

Air Temp. : 17.6 C 26.0 C 24.6 C Weed 1 CHEAL cot-4l 4-20lf

% Humidity : 81 43 76 Height: 4lf 20+lf

Wind Speed : 0.9 kph 4.5 kph 7.7 kph Density : 10.5 M2 18 M2

Dew Present: Y N N Weed 2 AMBEL 4lf 6lf

Soil Temp.: 20 C 35 C 25 C Height: 6lf 10lf

Soil Moist.: damp dry dry Density : 10.5 M2 20.5

Cloud Cover: 90% 70% 85% Weed 3 ECHCG 2lf 6lf

Equipment : Height: 3lf 3till

Pressure : 207 207 207 Density : 24 M2 10 M2

Nozzle Type: LOW DRIFT LOW DRIFT LOW DRIFT

Nozzle Size: ULD120-02 ULD120-02 ULD120-02

Noz.Spacing: 50 CM 50 CM 50 CM

Boom Length: 2 M 2 M 2 M

Boom Height: 50 CM 50 CM 50 CM

Carrier : WATER WATER WATER

Appl.Volume: 200 L/ha 200 L/ha 200 L/ha

Propellant : CO2 CO2 CO2

Pest Code AMBEL ABUTH CHEAL SETVI AMBEL ABUTH Crop Code ZEAMX ZEAMX ZEAMX Rating Date Jun-8-14 Jun-19-14 Aug-6-14 Jun-8-14 Jun-8-14 Jun-8-14 Jun-8-14 Jun-19-14 Jun-19-14 Rating Type INJURY INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % Crop Stage Majority V1 V5 R2 V1 V1 V1 V1 V5 V5 Pest Stage Majority cot-6lf cot-4lf 1-3lf 2-10lf cot Pest Density, Unit 11 M2 11 M2 24 M2 21 M2 1 M2 Trt-Eval Interval 11 DA-A 10 DA-B 70 DA-A 11 DA-A 11 DA-A 11 DA-A 11 DA-A 10 DA-B 10 DA-B Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 8 9

1 Weedy control 0 a 0 a 0 a 0 a 0 a 0 a 0 d 0 b 2 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 0 a 0 a 0 a 39 a 69 a 39 a 13 b 7 b mesotrione 480 SC 140 g AI/ha PRE A

3 meso/s-metol/atraz-A19414A 440 SC 2065 g AI/ha PRE A 0 a 0 a 0 a 35 a 29 a 5 a 6 c 28 b 4 BIR/meso/s-meto/atraz-A19707A 412 SC 2022 g AI/ha PRE A 0 a 0 a 0 a 30 a 63 a 15 a 6 c 25 b 5 meso/s-metol/atraz-A19414A 440 SC 1475 g AI/ha PRE A 0 a 0 a 0 a 20 a 48 a 15 a 3 cd 0 b glyphosate (Touchdown Total) 500 SL 900 g AI/ha POST 2 C

6 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 0 a 0 a 0 a 20 a 29 a 39 a 3 cd 0 b glyphosate/mesotrione-A19573B 495 SC 1155 g AI/ha POST 2 C

7 glyphosate/mesotrione/s-metola 525 SC 2205 g AI/ha POST 1 B 0 a 0 a 0 a 25 a 54 a 24 a 100 a 100 a atrazine 480 SC 280 g AI/ha POST 1 B Agral 90 1000 SL 0.200 % V/V POST 1 B

LSD (P=.05) 0.0 0.0 0.0 40.1 . 44.3 42.0 5.9 41.3 Standard Deviation 0.0 0.0 0.0 27.0 . 29.9 28.2 4.0 27.7 CV 0.0 0.0 0.0 111.85 . 72.05 145.08 21.39 121.71

16

WEED MANAGEMENT STRATEGIES IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A APPLIED PRE, EPOST AND LPOST I


Pest Code CHEAL SETVI AMBEL ABUTH CHEAL SETVI Crop Code ZEAMX ZEAMX Rating Date Jun-19-14 Jun-19-14 Aug-6-14 Aug-6-14 Aug-6-14 Aug-6-14 Nov-3-14 Nov-3-14 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL YIELD YIELD Rating Unit % % % % % % bus/ac ton/ha Crop Stage Majority V5 V5 R2 R2 R2 R2 Pest Stage Majority 4-20+lf 3lf-3til 20+lfbud 3lf-flow 2-20+lf 4till-fl Pest Density, Unit 18 M2 10 M2 26 M2 4 M2 26 M2 28 M2 Footnote Number 1 1 Trt-Eval Interval 10 DA-B 10 DA-B 70 DA-A 70 DA-A 70 DA-A 70 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 10 11 12 13 14 15 18 19

1 Weedy control 0 e 0 c 0 d 0 b 0 e 0 d 118.7 c 7.45 c 2 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 15 b 6 b 63 c 100 a 81 c 11 b 160.0 b 10.04 b mesotrione 480 SC 140 g AI/ha PRE A

3 meso/s-metol/atraz-A19414A 440 SC 2065 g AI/ha PRE A 6 cd 5 bc 19 d 100 a 16 d 9 bc 154.1 b 9.67 b 4 BIR/meso/s-meto/atraz-A19707A 412 SC 2022 g AI/ha PRE A 10 bc 6 b 71 bc 100 a 90 b 4 cd 145.1 bc 9.11 bc 5 meso/s-metol/atraz-A19414A 440 SC 1475 g AI/ha PRE A 3 de 0 c 98 a 97 a 100 a 97 a 197.7 a 12.41 a glyphosate (Touchdown Total) 500 SL 900 g AI/ha POST 2 C

6 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 4 de 3 bc 100 a 100 a 100 a 96 a 198.9 a 12.49 a glyphosate/mesotrione-A19573B 495 SC 1155 g AI/ha POST 2 C

7 glyphosate/mesotrione/s-metola 525 SC 2205 g AI/ha POST 1 B 100 a 99 a 97 ab 100 a 99 a 97 a 199.5 a 12.52 a atrazine 480 SC 280 g AI/ha POST 1 B Agral 90 1000 SL 0.200 % V/V POST 1 B

LSD (P=.05) 6.2 5.9 26.7 3.0 5.4 7.3 28.74 1.804 Standard Deviation 4.1 4.0 18.0 2.0 3.6 4.9 19.34 1.214 CV 21.09 23.49 28.12 2.36 5.19 10.99 11.53 11.53 Means followed by same letter do not significantly differ (P=.05, LSD) Column 16 Footnote: Note: Blocked fertilizer hose resulted in one strip in first rep only to be missing fertilizer - yields are lower. Column 17 Footnote: Note: Blocked fertilizer hose resulted in one strip in first rep only to be missing fertilizer - yields are lower.

Conclusions: This experiment was established to determine the level of weed control with preemergence, early postemergence and two-pass weed control programs in corn. The corn was seeded on May 26 and the preemergence applications were applied on May 28. The first significant rain event was on June 18 (18.8 mm). The 21 days between herbicide application and the first significant rain event probably influenced the level of weed control with the preemergence herbicides evaluated. At 11 and 70 DAA and 10 DAB, there was no visible injury in corn from the herbicide treatments evaluated. At 70 DAA, the preemergence application of s-metolachlor/atrazine + mesotrione provided excellent control of velvetleaf, good control of lamb’s-quarters, fair control of common ragweed and poor control of green foxtail. A19414A applied preemergence provided excellent control of velvetleaf and poor control of lamb’s-quarters, common ragweed and green foxtail. A19707A provided excellent control of velvetleaf and lamb’s-quarters, fair control of common ragweed and poor control of green foxtail. The sequential applications of either A19414A applied preemergence followed by glyphosate applied postemergence or s-metolachlor/atrazine applied preemergence followed by A19573B applied postemergence provided excellent full season control of all weed species evaluated in this experiment. The early postemergence application of glyphosate/mesotrione/s-metolachlor plus atrazine provided excellent full season weed control of the species evaluated in this experiment. Corn yield was maximized with the two-pass weed control programs and the early post tankmix. This experiment once again shows the value of a two-pass weed control programs in corn.

17

WEED MANAGEMENT STRATEGIES IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A APPLIED PRE, EPOST AND LPOST II




Expt. Design: RACOBL. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range L7A.



Application: A B C Application: A B C

Date : Jun-4-14 Jun-14-14 Jun-25-14 Crop 1 ZEAMX V1-V2 V5-V6

Time of Day: 09:30 07:20 10:00 Height : NOT EM 17-23 CM 50-65 CM

Timing : PRE POST 1 POST 2

Air Temp. : 24.2 C 12.4 C 23.1 C Weed 1 ABUTH COTY 2 LF C-3 LF

% Humidity : 60.9 79.3 91.7 Height: 1 CM 3-4 CM 1-7 CM

Wind Speed : 1.0 KM/H 6.0 KM/H 1.9 KM/H Density : 1 /M2 1 /M2 3 /M2

Dew Present: N N Y Weed 2 AMAPO NOT EM C-6 LF 4-20+L

Soil Temp.: 18.6 C 10.1 C 23.5 C Height: 1-6 CM 3-34CM

Soil Moist.: MOIST AT DEPTH MOIST Density : 22 /M2 21 /M2

Cloud Cover: 100% 0% 100% Weed 3 AMBEL C-2 LF C-4 LF 2-14LF

Equipment : Height: 1-2 CM 1-3 CM 1-12CM

Pressure : 207 207 207 Density : 6 /M2 10 /M2 12 /M2

Nozzle Type: LOW DRIFT LOW DRIFT LOW DRIFT Weed 4 CHEAL C-2 LF C-4 LF 4-12LF

Nozzle Size: ULD120-02 ULD120-02 ULD120-02 Height: 1-2 CM 1-3 CM 3-7CM

Noz.Spacing: 50 CM 50 CM 50 CM Density : 1.5 /M2 4 /M2 9.5 /M2

Boom Length: 2 M 2 M 2 M Weed 5 SETFA 2-3 LF 2-4 LF 3L-4TL

Boom Height: 50 CM 50 CM 50 CM Height: 2-3 CM 2-6 CM 7-36CM

Carrier : WATER WATER WATER Density : 2.5 /M2 18 /M2 34 /M2

Appl.Volume: 200 L/ha 200 L/ha 200 L/ha

Propellant : CO2 CO2 CO2

Pest Code ABUTH AMAPO AMBEL CHEAL SETFA ABUTH Crop Code ZEAMX ZEAMX ZEAMX Rating Date Jun-13-14 Jun-25-14 Aug-13-14 Jun-13-14 Jun-13-14 Jun-13-14 Jun-13-14 Jun-13-14 Jun-25-14 Rating Type INJURY INJURY INJURY CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % % Crop Stage Majority V2 V5 R1-R2 Crop Stage Scale 20-25CM 50-60CM 2.2-2.8M Pest Stage Majority 2 LF C-6 LF C-4 LF C-4 LF 2-4 LF C-3 LF Pest Density, Unit 1 /M2 22 /M2 10 /M2 4 /M2 18 /M2 3 /M2 Trt-Eval Interval 9 DA-A 21 DA-A 70 DA-A 9 DA-A 9 DA-A 9 DA-A 9 DA-A 9 DA-A 21 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 8 9

1 Weedy control 0 a 0 a 0 a 0 c 0 c 0 c 0 c 0 c 0 d 2 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 0 a 0 a 0 a 98 a 100 a 94 ab 100 a 94 a 97 b mesotrione 480 SC 140 g AI/ha PRE A

3 meso/s-metol/atraz-A19414A 440 SC 2065 g AI/ha PRE A 0 a 0 a 0 a 97 ab 99 a 91 ab 100 a 90 a 98 b

4 BIR/meso/s-meto/atraz-A19707A 412 SC 2022 g AI/ha PRE A 0 a 0 a 0 a 96 ab 100 a 94 a 99 b 91 a 98 b

5 meso/s-metol/atraz-A19414A 440 SC 1475 g AI/ha PRE A 0 a 0 a 0 a 97 a 98 b 90 b 99 b 83 b 97 b glyphosate (Touchdown Total) 500 SL 900 g AI/ha POST 2 C

6 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 0 a 0 a 0 a 94 b 100 a 92 ab 100 a 93 a 93 c

glyphosate/mesotrione-A19573B 495 SC 1155 g AI/ha POST 2 C 7 glyphosate/mesotrione/s-metola 525 SC 2205 g AI/ha POST 1 B 0 a 0 a 0 a 0 c 0 c 0 c 0 c 0 c 100 a

atrazine 480 SC 280 g AI/ha POST 1 B Agral 90 1000 SL 0.200 % V/V POST 1 B


18

WEED MANAGEMENT STRATEGIES IN CORN WITH S-METOLACHLOR/MESOTRIONE/ATRAZINE AND A19707A APPLIED PRE, EPOST AND LPOST II


Pest Code AMAPO AMBEL CHEAL SETFA ABUTH AMAPO AMBEL CHEAL Rating Date Jun-25-14 Jun-25-14 Jun-25-14 Jun-25-14 Aug-13-14 Aug-13-14 Aug-13-14 Aug-13-14 Rating Type CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL CONTROL Rating Unit % % % % % % % % Pest Stage Majority 4-20+LF 2-20+LF 4-12 LF 3L-4TIL 7LF-FLWR FLWR FLWR FLWR Pest Density, Unit 21 /M2 12.5/M2 9.5 /M2 34 /M2 1 /M2 26 /M2 10.5/M2 6.5 /M2 Trt-Eval Interval 21 DA-A 21 DA-A 21 DA-A 21 DA-A 70 DA-A 70 DA-A 70 DA-A 70 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 10 11 12 13 14 15 16 17

1 Weedy control 0 d 0 d 0 c 0 d 0 d 0 c 0 d 0 c 2 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 99 ab 94 ab 99 a 91 ab 96 c 97 a 89 b 98 a mesotrione 480 SC 140 g AI/ha PRE A

3 meso/s-metol/atraz-A19414A 440 SC 2065 g AI/ha PRE A 95 ab 83 c 98 a 86 ab 97 bc 90 b 75 c 94 b

4 BIR/meso/s-meto/atraz-A19707A 412 SC 2022 g AI/ha PRE A 95 b 90 bc 98 a 91 ab 97 b 91 b 85 b 97 ab

5 meso/s-metol/atraz-A19414A 440 SC 1475 g AI/ha PRE A 88 c 90 bc 93 b 68 c 100 a 100 a 100 a 100 a glyphosate (Touchdown Total) 500 SL 900 g AI/ha POST 2 C

6 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 97 ab 85 c 98 a 83 b 100 a 100 a 100 a 100 a

glyphosate/mesotrione-A19573B 495 SC 1155 g AI/ha POST 2 C 7 glyphosate/mesotrione/s-metola 525 SC 2205 g AI/ha POST 1 B 100 a 100 a 100 a 99 a 100 a 99 a 98 a 99 a atrazine 480 SC 280 g AI/ha POST 1 B Agral 90 1000 SL 0.200 % V/V POST 1 B

LSD (P=.05) 4.8 9.1 2.9 13.2 1.5 4.9 8.1 3.8 Standard Deviation 3.2 6.1 1.9 8.9 1.0 3.3 5.5 2.5 CV 3.95 7.92 2.32 12.03 1.2 4.03 7.0 3.01

Pest Code SETFA

Crop Code ZEAMX ZEAMX Rating Date Aug-13-14 Nov-3-14 Nov-3-14 Rating Type CONTROL YIELD YIELD Rating Unit % T/HA BU/AC Pest Stage Majority 3TL-FLWR Pest Density, Unit 48 /M2 Trt-Eval Interval 70 DA-A 152 DA-A 152 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 18 21 22

1 Weedy control 0 c 5.21 d 83.0 d 2 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 71 b 12.39 c 197.4 c mesotrione 480 SC 140 g AI/ha PRE A

3 meso/s-metol/atraz-A19414A 440 SC 2065 g AI/ha PRE A 68 b 12.02 c 191.5 c

4 BIR/meso/s-meto/atraz-A19707A 412 SC 2022 g AI/ha PRE A 70 b 13.14 bc 209.3 bc

5 meso/s-metol/atraz-A19414A 440 SC 1475 g AI/ha PRE A 99 a 13.97 abc 222.5 abc glyphosate (Touchdown Total) 500 SL 900 g AI/ha POST 2 C

6 s-metolachlor/atrazine 720 SC 2520 g AI/ha PRE A 99 a 15.72 a 250.4 a

glyphosate/mesotrione-A19573B 495 SC 1155 g AI/ha POST 2 C 7 glyphosate/mesotrione/s-metola 525 SC 2205 g AI/ha POST 1 B 98 a 14.55 ab 231.8 ab

atrazine 480 SC 280 g AI/ha POST 1 B Agral 90 1000 SL 0.200 % V/V POST 1 B

LSD (P=.05) 10.2 2.151 34.26 Standard Deviation 6.9 1.448 23.06 CV 9.55 11.65 11.65

Conclusions: This experiment was established to determine the level of weed control with preemergence, early postemergence and two-pass weed control programs in corn. At 9, 21 and 70 DAA and 10 DAB, there was no visible injury in corn from the herbicide treatments evaluated. At 70 DAA, the preemergence application of s-metolachlor/atrazine + mesotrione and A19707Q provided excellent control of velvetleaf, green pigweed and lamb’s-quarters, good control of common ragweed and fair control of green foxtail. A19414A applied preemergence provided excellent control of velvetleaf, green pigweed and lamb’s-quarters and fair control of common ragweed and green foxtail. The sequential applications of either A19414A applied preemergence followed by glyphosate applied postemergence or s-metolachlor/atrazine applied preemergence followed by A19573B applied postemergence provided excellent full season control of all weed species evaluated in this experiment. The early postemergence application of glyphosate/mesotrione/s-metolachlor plus atrazine provided excellent full season weed control of the species evaluated in this experiment. Corn yield was maximized with the two-pass weed control programs and the early post tankmix. This experiment once again shows the value of a two-pass weed control programs in corn.

19

EFFECT OF GLYPHOSATE PLUS FUNGICIDE APPLIED AT V4-V6 ON CROP INJURY, DISEASE CONTROL AND CORN YIELD (14, 15)

CHRISTY SHROPSHIRE, PETER SIKKEMA EXPERIMENT ID: FC14C1A


Planting Method: CONV. Emerged On: Jun-1-14.

Expt. Design: RACOBL. Reps: 4. Plot Size: 2 m x 10 m. Expt. Location: RC - Range G3.

Site Description: Soil Texture: CL. %OM: 4.4 %Sand: 36 %Silt: 35 %Clay: 29 pH: 7 CEC: 23.



Date : Jun-16-14 Crop 1 ZEAMX V4

Time of Day: 19:30 Height : 30-40 CM

Timing : POST

Air Temp. : 28.2 C Disease: KABAZE

% Humidity : 56.9 Name: Kabatiella zeae

Wind Speed : 2.6 KM/H Common Name: Eye spot of maize

Dew Present: N

Soil Temp.: 29.3 C

Soil Moist.: AT DEPTH

Cloud Cover: 20%

Equipment :

Pressure : 207

Nozzle Type: LOW DRIFT

Nozzle Size: ULD120-02

Noz.Spacing: 50 CM

Boom Length: 2 M

Boom Height: 50 CM

Carrier : WATER


Propellant : CO2

Pest Code DISEASES DISEASES KABAZE KABAZE Crop Code ZEAMX ZEAMX ZEAMX ZEAMX Rating Date Jun-23-14 Jun-30-14 Jul-7-14 Jul-14-14 Jun-30-14 Jul-14-14 Aug-11-14 Aug-11-14 Rating Type INJURY INJURY INJURY INJURY DISEASE DISEASE INCIDENCE SEVERITY Rating Unit % % % % % % % % Crop Stage Majority V6 V7-V8 V10 V12-V13 Crop Stage Scale 50-60 CM 1-1.2 M 1.4-1.6M 1.7-1.8M Footnote Number 1 2 3 4 Trt-Eval Interval 7 DA-A 14 DA-A 21 DA-A 28 DA-A 14 DA-A 28 DA-A 56 DA-A 56 DA-A Trt Treatment Form Form Rate Growth Appl No. Name Conc Type Rate Unit Stage Code 1 2 3 4 5 6 7 8

1 Untreated check 0 a 0 a 0 a 0 a 0 a 0 a 1.4 a 1.1 a 2 Untreated check 0 a 0 a 0 a 0 a 0 a 0 a 1.3 a 1.5 a 3 glyphosate (Weathermax) 540 SN 900 g AI/ha POST A 0 a 0 a 0 a 0 a 0 a 0 a 2.1 a 1.5 a 4 glyphosate (Weathermax) 540 SN 900 g AI/ha POST A 0 a 0 a 0 a 0 a 0 a 0 a 1.4 a 1.5 a pyraclostrobin (Headline) BASF 250 EC 100 g AI/ha POST A

5 glyphosate (Weathermax) 540 SN 900 g AI/ha POST A 0 a 0 a 0 a 0 a 0 a 0 a 1.8 a 1.3 a

pyraclostrobin/fluxapyroxad (Priaxor) BASF 500 EC 150 g AI/ha POST A 6 glyphosate (Weathermax) 540 SN 900 g AI/ha POST A 0 a 0 a 0 a 0 a 0 a 0 a 1.8 a 1.3 a

pyraclostrobin/metconazole (Twinline) BASF 210 EC 105 g AI/ha POST A 7 glyphosate (Weathermax) 540 SN 900 g AI/ha POST A 0 a 0 a 0 a 0 a 0 a 0 a 1.1 a 1.4 a

trifloxystrobin/propiconazole (Stratego) Baye 250 EC 200 g AI/ha POST A 8 glyphosate (Weathermax) 540 SN 900 g AI/ha POST A 0 a 0 a 0 a 0 a 0 a 0 a 1.8 a 1.4 a

azoxystrobin/propiconazole (Quilt) Syngenta 200 EC 200 g AI/ha POST A 9 glyphosate (Weathermax) 540 SN 900 g AI/ha POST A 0 a 0 a 0 a 0 a 0 a 0 a 1.9 a 1.0 a EXP # 1 325 SC 185.7 g AI/ha POST A

LSD (P=.05) 0.0 0.0 0.0 0.0 0.0 0.0 0.67 0.62 Standard Deviation 0.0 0.0 0.0 0.0 0.0 0.0 0.46 0.42 CV 0.0 0.0 0.0 0.0 0.0 0.0 28.66 32.15

Footnote Number 1: NO DISEASE PRESENT. Footnote Number 2: TRACE OF ANTH

weed control trials research report 2014 · ideas, the herbicide samples they have provided for the...

Documents