dr joe defrank 2014 lich conference hawaii's turf bmps

New Selective Herbicides for Weed Control in Turf. 10/09/2014

Dr. Joe DeFrank – UH-TPSSKaipo & Steve – H.C. & C.

Rey I. – TGDOrville Baldos & Scott Lukas-Resh Assoc.

For more information on topics coveredhttp://www.ctahr.hawaii.edu/deFrankJ/index.htm

For more information on topics covered

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Topics Covered – LICH - 20141. Grassy Weed ID for turf2. Turf research history w/Tenacity 2006 to 20143. Tenacity + Sencor use on non-dormant

Bermuda grass4. Waipio Soccer complex weed cleanup case

study starting in Dec 2013 5. Summer 2014 Waipio weed cleanup6. Time of year consideration for grassy weed

control

Grassy Weeds in Hawaiian TurfAustralian Carpet GrassHilo GrassGoose grassDallisgrassLove grass Henry’s and Blanket CGStar GrassSmut grass

Dominate weedy

grasses

Australian carpet grass

Dominate weedy

grasses

Hilo grass

Dominate weedy grasses

A. Carpet grassHilo grass

Goose grass

Dallisgrass

Love grassCarolina Love grass

Henry’s Crabgrass

Blanket Crabgrass

Star Grass

BG

SG

Star Grass

Smut grass

Tenacity• Single product • Use on dormant Bermuda , post and pre too.• Other grass sensitive are: zoysia, seashore paspalum and

kikuyugrass• Primary use on Tall fescue, Kentucky blue grass• Safe on warm season grass: Centipedegrass, St. Aug. turf

farm only, injury will occur.• Weed control: crabgrasses, goosegrass, love grass,

yellow nutsedge and many broadleaf weeds

Post emergence forGrass & Broadleaf weed control

Research History of Tenacity w/JD in HI1. 2006 5 turf grasses: response to Tenacity2. 2013 trade show tip: try Revolver + Tenacity 3. 2013-April Tank mix with Rev+Ten at Waipio4. 2013-May Happy Accident with JD & H.C. & C.5. 2013-July Revolver/Celsius followed with Ten +Sen.6. 2013-Dec. H.C. & C. Ten + Sen on 8 acres at Waipio7. 2014-Mar. Spot treatment w/MeterJet w/Ten+Sen 1-4X8. 2014-Aug. Low dose Ten + Sen following Specticle

then Rev&Cel.

Tenacity = MesotrioneBlocks pigment formation that protects Chlorophyll from sunlight

Response of 5 turf types to Tenacity UH Magoon Nov. - 2006

Turf types treated:1. Tiway 419 - B.G.2. TifEagle - B.G.3. Sea Isle 2000 - S.P.4. Zenith – Zoysia5. Legacy – S.P.

Treatments:1. Untreated2. Tenacity 8 oz/a + .25 v/v NIS (Liberate)3. Tenacity 16 oz/a + .25 v/v NIS (Liberate)

0-DAS 8-DAS

22-DAS

Tenacity on

TifWay 419B.G.

8 oz

16 oz

8 oz

16 oz

0-DAS 8-DAS

22-DAS

Tenacity on

TifEagleB.G.

8 oz

16 oz

8 oz 16 oz

0-DAS 8-DAS

22-DAS

Tenacity on

ZenithZoysia.

8 oz

16 oz

8 oz

16 oz

0-DAS 8-DAS

22-DAS

Tenacity on

SI2000S.P.

8 oz

16 oz

8 oz

16 oz

0-DAS 8-DAS

22-DASTenacity on

LegacyS.P.

8 oz

16 oz

8 oz

16 oz

419 TE

SI2000 ZEN

LEG-SP

5 TURFTYPES 22 DAS

TENACITY

8oz

8oz

8oz

8oz

8oz

16oz

16oz

16oz

16oz

16oz

% MGNColor

.25 NIS

8 oz/a

16 oz/a

419 98 98 93SI2K 95 60 45TE 70 75 75ZEN 100 60 40L_SP 97 78 60

In 2006, Tenacity usefulness in warm

season turf in HI = ???

2013 trade show tip: try Revolver + Tenacity HIDOA can Tenacity be applied to non-dormant Bermuda grass

Research History of Tenacity w/JD

1. 2006 5 turf grasses: response to Tenacity2. 2013 trade show tip: try Revolver + Tenacity 3. 2013-April Tank mix with Rev+Ten at Waipio4. 2013-May Happy Accident with JD & H.C. & C.5. 2013-July Revolver followed with Ten +Sen.6. 2013-Dec. H.C. & C Ten + Sen 8 acres at WaipioResult = Revolver + Tenacity: Initial injury higher but long term control of goose grass appeared to be reduced compared to Tenacity alone. Tank mix not particularly useful. BUT


1. 2006 5 turf grasses: response to Tenacity2. 2013 trade show tip: try Revolver + Tenacity 3. 2013-April Tank mix with Rev+Ten at Waipio4. 2013-May 20 = Happy Accident W/H.C. & C.5. 2013-July Revolver followed with Ten +Sen.6. 2013-Dec. H.C. & C Ten + Sen 8 acres at Waipio

To the right of yellow line, tractor mounted boom spray with Sencor (4 oz/a) + MSMA (1.8 lb/a) on 05/20/13 same day that JD spray 3rd

application of Tenacity (4 oz/a) only. DeFrank’s Tenacity spray is to the left of the yellow line. Dead Love and Goosegrass is due to overlap of last Tenacity spray and C&C boom spray with Sencor + MSMA.

DeFrank’s Tenacity spray extended from the marked plot area to 5 to 6 feet beyond the back of plots. Note lack of Love grass kill in the untreated strip above the area with multiple herbicide applications.

405 with Tenacity applied 7 days prior to photos

401 untreated plot

Close-up of area treated with 4 oz/a Sencor + 1.8 lb/a MSMA (as HCC spray) + 4 oz/a Tenacity (DeFrank’s research sprayer) applied on the same day (05/20/13). The only green tissue in this image is the BERMUDA GRASS !!!


1. 2006 5 turf grasses: response to Tenacity

2. 2013 trade show tip: try Revolver + Tenacity

3. 2013-April Tank mix with Rev+Ten at Waipio

4. 2013-May Happy Accident with JD & H.C. & C.

5. 2013-July Revolver or Celsius 1st , wait 2 weeks then Tenacity +Sencor, also looked at tank mix T+S+MSMA.

Commonly used Postemergence forGrassy weed control

Sencor 75DF• Single product , post in turf but has pre too.• Use on Bermuda • Control for goosegrass in HI, • On bare ground has good preemergence activity• Pre ban mixed with MSMA for wider spectrum grass

and purple nutsedge control

14DAS-01

Rev. wait 2wks

Ten (2.5 oz/a) + Sen (4 oz/a)

+ MSO 1%

0 DAS Rev. 2 wks. split Ten+Senat Waipio

2013

0 DAS

14DAS-02

Rev.+ Ten. at Waipio2013

Rev. wait 2wks

Ten (2.5 oz/a) + Sen (4 oz/a)

+ MSO 1%

Unt-2wksTen (2.5 oz/a) + Sen (4 oz/a)

+ MSO 1% 14DAS-02

Rev. + Ten. at Waipio2013

Unt-2wksTen (5.0 oz/a) + Sen (8 oz/a)

+ MSO 1%

14DAS-02

Rev. + Ten. at Waipio2013

All treatments applied

2X’s at back of exp.Best control

Injury to BG OK

Untreated 102 DAS0212/03/13

2X 408 = 5oz Ten + 8oz Sen 102 DAS02

08/09 to 12/03/13

Untreated 102 DAS0212/03/13

2X 408 = 5oz Ten + 8oz Sen 102 DAS02

08/09 to 12/03/13

Results of Revolver or Celsius Applied 1st

wait 2 weeks then follow with Tenacity + Sencor

1. Goose grass control was slightly better with Revolver than Celsius applied 2 weeks prior T+S application.

2. Celsius appeared to cause a slight reduction to T+S activity.

3. Addition of MSMA did not add noticeably more activity on Goose grass that T+S alone.

4. 2X application in demo area establishes best activity on Goose grass with 5 oz/a Ten. and 8 oz/a Sen.

Research History of Tenacity w/JD1. 2006 5 turf grasses: response to Tenacity2. 2013 trade show tip: try Revolver + Tenacity 3. 2013-April Tank mix with Rev+Ten at Waipio4. 2013-May Happy Accident with JD & H.C. & C.5. 2013-July Rev. or Cel. followed with Ten +Sen.6. 2013-Dec. H.C. & C Ten + Sen 8 acres at Waipio

H.C. & C. Applies4 oz Tenacity + 8 oz Sencor + 1% MSO - 2X’s12/10 & 12/23/2013 – Winter Start Program

22 DAS02 Ten(4 oz/a)+Sen (8 oz/a) – 01/06/14


Dallis grass.

CONCLUSIONS FOR 2013 – 1st Qrt. 2014

1. Revolver + Tenacity Tank-Mix not useful2. Revolver or Celsius 2-wks. prior to Tenacity +

Sencor, shows R>C w/little improvement 3. MSMA not needed with Tenacity + Sencor

Tank-Mix.4. Tenacity 4 oz/a + Sencor 8 oz/a applied 2X’s

very good for many grassy weeds in Bermuda, Kaki weed/legumes too.

5. 20-30 days after Ten+Sen and no PREs = seedling weeds need to be controlled.

H.C.&C. applies Dismiss (6oz/a) + Barricade (10 oz/a) 2 Xs for control of seedling goose grass on

02/11/14 = 50 DAS02 & 02/25/14 = 64 DAS02Photo on 02/04/14

Rains in Jan-Feb prevented timely post apps. Goose grass into post tiller stage

43 DAS02

H.C.&C. applies Dismiss (6oz/a) + Barricade (10 oz/a) 2Xs for control of seed goose grass on

02/11/14 = 50 DAS02 & 02/25/14 = 64 DAS02

Photos on 02/04/14

Photos on 02/19/148 DAS1st Dism+Barr


02/11/14 = 50 DAS02 & 02/25/14 = 64 DAS02

GG control at pre-tillerPost tiller NO-CAN.

Photo on 02/19/148 DAS1

Dism+Barr

BG=OK


02/11/14 = 50 DAS02 & 02/25/14 = 64 DAS02

Photos on 03/03/146 DAS

2XsDism+Barr


02/11/14 = 50 DAS02 & 02/25/14 = 64 DAS02

Optimum Goose grass size for Dismiss activity is “pre-tiller” stage

6-leaf pre-tiller 3-tiller goose grass

Timing isn’t everything it’s the only thing!

6 DAS02 Dism +Barr - Photos on 03/03/1470 DAS 2nd Ten=Sen



02/11/14 = 50 DAS02 & 02/25/14 = 64 DAS02

Conclusions of Waipio Complex winter 2013 clean up

1. Nov & Dec Bermuda Grass is most in need of release from grassy weed encroachment.

2. 10-14 days after 2nd Ten+Sen = apply preemergence for GG seedling control needed. Rainy weather = more timely seedling weed control needed.

3. Dismiss + Barricade best at GG pre-tiller stage. Larger sizes not controlled.

4. Complete BG fill in post 2Xs w/Ten+Sen = 75-80 days.5. Spot treatments needed for larger escaped goose grass

and other grassy weeds.6. Better to prevent seedlings growth with preemergence.

Spot treatments based on broadcast spray applicationWaipio broadcast spray application:

1X rate

Use Meter Jet spray gun with

TeeJet Full cone tip = TG-3

Application height to produce an 18 in. diameter

circle

Tenacity = 5 oz/a Sencor = 8 oz/a

18 in.

1 Gallon of spot mix =1.5 ml Tenacity2.3 grams Sencor38 ml MSO = 1% v/v

Apply 15.4 ml to 18 in diameter circle = 1X Waipio Broadcast rate

Spot treatments based on broadcast

spray application

Start 03/06/14

Objective of Waipio Spot application experiment:Determine goose grass and Bermuda grass response to

“Spot” kill rate with single application.

Treatments: 1,2 & 4X Waipio Broadcast & 1% MSO blank.

Results of Spot Application to Bermuda Grass6 Days after spray – 03/12/14

1X

4X 2X

4XMSO 1%


1X

4X 2X

4XMSO 1%


1X


2X


4X

Conclusions of Waipio Complex 1, 2 & 4X Spot treatments - 2014

1. All spot applications caused noticeable circles in common Bermuda grass.

2. 4X spot was most noticeable3. 4X provided 1-application kill of large goose grass4. 2X spot application ok 1-shot on small goose grass=6 LF5. 1X injury gone in 18 days6. 4X injury gone in 53 days7. TeeJet TG-3 solid cone tip has higher deposition on outer

band of cone.

NEXT – SUMMER START PROGRAM

Commonly used post emergence forGoose grass weed control

Revolver• Single product , post in turf.• Use on Bermuda • Control for goosegrass in HI, • Systemic uptake, plant grows without essential

components and dies.• Active plant growth needed for uptake and activation

Commonly used Post emergence forBroadleaf & certain grass weed control

Celsius• 3 compound mix, includes dicamba• Use on Bermuda • Control of important broadleaf weed HI: creeping beggars

tic, broadleaf plantain, prostrate spurge, horse weed and oxalis.

• Control of grassy weeds include Love grass relative, sandbur, Australian Carpet grass relative.

• Systemic uptake, multiple modes of actions.• Active plant growth needed for uptake and activation.

Celsius• Control of important broadleaf weed HI: creeping beggars tic,

broadleaf plantain, prostrate spurge, horse weed and oxalis.

Celsius• Control of important grassy weeds: sandbur, A. carpet- & Love Gr.-rel

Carpet grass-A. affinisGopher LG-E. ciliaris

Sandbur-C. echinatus

Pre emergence for Broadleaf & certain grass weed control

Specticle• Single compound – pre activity only• Use on Bermuda with preemergence activity only• Control of important broadleaf weed HI: horseweed,

broadleaf plantain, prostrate spurge and oxalis.• Control of grassy weeds include: Henry’s crab grass,

Goose grass, Guinegrass, Green Kyllinga. • 4-5 months of Goose grass control with 3.7 oz/a.• Irrigation required for activation.• Pruning of new roots of weeds and turf to be

expected.

HC& C summer 2014 Waipio clean upExperimental setup to low dose Tenacity + Sencor

Tank mix experiment.

Summer 2014 protocol• May 8, 2014 apply CN9 (10 gal/a) + Specticle (3.5 dry-oz/a)• 26 DAYS• June 3, 2014 apply Revolver 26 liq-oz/a + Celsius 3 dry-oz/a +

Liberate surfactant .25%. • 17 DAYS• June 20, 2014, 2nd app Rev. + Cel.• 40 DAYS• Old roots dead & New root growth from Goose and Love grass,

CUE to start next spray with different mode of action, 83 DA-Spec.

40 days post 2nd Application of Revolver + Celsius Visual cue for cleanup of Goose and Love grass

Using alternative MOA herbicide tank mix.

40 DAS2 Rev+Cel = Easy extraction of

NORMAL looking Love grass

Love grass roots emerge from stem nodes 35-40 days after R+C 2Xs.

Goose grass roots emerge from stem nodes 35-40 days after R+C 2Xs.40 DA2-Rev/Cel

Compromised main roots allows flush of new roots. Specticle in place to prevent root penetration into soil provides wider application window for low dose Tenacity + Sencor to complete weed control process!

Love grass

Goose grass

40 DAS2 Rev. & Cel. mostly Love grass at start of low dose T+S on 08/01/14

Weed pressure in foreground this area not sprayed with Revolver & Celsius shows large Goose grass

Low dose Tenacity + Sencor Tank mix study42 Days after 2nd Rev. + Cel. ApplicationStarted 08/01/2014, 2nd app 11 days later.

Treatment #2Xs Herbicides Amount/a

1 Tenacity +Sencor +NIS (Excel 90) 0.25%

5 liq-oz/a +1 dry-oz/a





4 NIS (Excel 90) 0.25%

Response 3 DAS1

01= T-5 oz/a + S-1 oz/a02 = T-5 oz/a + S-2 oz/a03 = T-5 oz/a + S-4 oz/a04 = NIS 0.25% v/v

101102

203 204


7 days after 1st spray application 08/08/14

104103

01-7DAS15 OZ/A-T1 OZ/A-S

04-7DAS1NIS 0.25%

Herbicide type and application sequence work together to control problem grassy weeds

1. Revolver + Celsius kills old roots allows for new roots from stem nodes.

2. Specticle prevents new roots from entering the soil, provides wider window for control.

3. Tenacity moves to actively growing areas and kills new roots.

4. Sencor enhances Tenacity action in leaves.

5. All factors work together for control of GG & LG at reduced Sencor rates (i.e. 2- 4 oz/a)

101

102

203204


8 days after 2nd spray application 08/20/14Note frosting in areas where turf was scalped

104

103

04-8DAS2NIS 0.25%

LG

GG


LG

GG


GG

LG


LG

GG


101102

203

302

204

15 days after 2nd spray application 08/27/14

Weed Control Data for Low dose Tenacity + Sencor Tank mix study

08/20/14 = 8DAS2, 09/19/14 = 38 DAS2Treatmen

t #2Xs

HerbicidesLive Love Gr

#08/01/14

Live Love Gr #

08/20/14

% Goose GrControl09/18/14

1 Tenacity 5 liq-oz/a +Sencor 1 dry-oz/a +NIS (Excel 90) 0.25% 65 0 99



4 NIS (Excel 90) 0.25% 82 71 1

Trt 302-0 Day5 OZ/A-T2 OZ/A-S

Trt 302-38 DAS25 OZ/A-T2 OZ/A-S

54 days from start

02-38 DAS25 OZ/A-T2 OZ/A-S

03-38 DAS25 OZ/A-T4 OZ/A-S

Putting all togetherStarting Love and Goose grass in HI - Fall/Winter

Complete turf grass reset major damage is OKWithout Love and Goose Grass PRE-treatment with Rev. & Cel and Spec.

1. Starting Dec. 5-10

2. Tenacity (5 oz/a) + Sencor (8 oz/a) + MSO 1%

3. Apply 2 Xs 14 days apart.

4. Apply Ronstar-G 7 days after 2nd application.

5. Prepare Tenacity + Sencor spot treatment for larger

GG/LG survivors

6. Fertilize for rapid recovery and fill in.

18 in.1 Gallon of spot mix =1.5 ml Tenacity2.3 grams Sencor38 ml MSO = 1% v/v

Apply 15.4 ml to 18 in diameter circle = 1X Waipio Broadcast rate

Putting all togetherStarting Love and Goose grass HI Spring/Summer

Bermuda grass damage must be minimized1. Starting in Apr.-Aug.2. Foliar feed and Specticle (3.5 oz/a)3. 40 days uniform irrigation & mowing.4. Revolver (26 oz/a) + Celsius (3 oz/a) + NIS .25%5. 2 applications 21 days apart – see new leaf

growth as cue for 2nd app.6. See growth cue 35-40 DAS2 = new root growth.7. Tenacity (5 oz/a) + Sencor (2-4 oz/a) + NIS .25%.8. Reapply Specticle prior to start of rainy season.

Production of Native Hawaiian Plant Seeds& Simulated Native Dry Land Ecosystem

On Hawaii’s Roadside areas

DOT-Funded Projects 2013-2016Project Objectives

1. Develop establishment and maintenance protocol for plantings of Native HI plants on roadside areas.

2. Describe seed harvest index and seed cleaning protocols for 4 grass and 5 broadleaf species.

3. Install 8,000 ft2 plantings of 5 broadleaf native HI plants for roadside seed producing.

4. Install roadside demonstration planting to simulate native dry land ecosystem on roadside area

1. Develop establishment and maintenance protocol for plantings of Native HI plants on roadside areas.

Install roadside demonstration plantings to simulate native dry land ecosystem on roadside areas.

Install roadside demonstration planting to simulate native dry land ecosystem on roadside area

Install 8,000 ft2 plantings of 5 broadleaf native HI plants for roadside seed producing.

For more information

Dr. Joe DeFrankEmail: [email protected]: 808.956.5698

On line video and slideshow:http://www.ctahr.hawaii.edu/deFrankJ/index.htm

dr joe defrank 2014 lich conference hawaii's turf bmps

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