pyrasulfotole and hard to control weeds · pyrasulfotole and hard to control weeds grdc rcsn...

Pyrasulfotole and Hard to Control weeds

GRDC RCSN meeting August 2017

Glen Bradley – Customer Sales Representative (Eastern Wheatbelt & Avon Valley) Craig White – Customer Advisor South / IWM Leader for Australia Matt Willis - Customer Advisor North

www.crop.bayer.com.au

Forward-Looking Statements

This presentation may contain forward-looking statements based on current assumptions and forecasts made by Bayer Group or subgroup management.

Various known and unknown risks, uncertainties and other factors could lead to material differences between the actual future results, financial situation, development or performance of the company and the estimates given here. These factors include those discussed in Bayer’s public reports which are available on the Bayer website at www.bayer.com.

The company assumes no liability whatsoever to update these forward-looking statements or to conform them to future events or developments.

Experimental Some material presented is experimental in nature, and may not yet be registered. It is provided here for discussion purposes, and should be discussed with a Bayer Representative before acting on any of the information.

Pyrasulfotole

Group H HPPD-inhibitor. Was the first new molecule introduced in Australia cereals for 20 years

+ MCPA = Precept ® (2008) + bromoxynil = Velocity® (2009)

+ both contain crop safener mefenpyr-diethyl As important for success as the active ingredient

Apply from 2 leaf Wheat & Barley crop- stage

Apply from 3 leaf Wheat & OAT 5 leaf Barley crop- stage

Lost or delayed control = lost yield

10

30

50

50 100 200 300

Pre-tillering

Tillering

Mid-tillering

45

20

17.5

13

% y

ield

gai

n

Wild radish plants/sq.m.

Ref: PISA Weed Decide Calculator 1997. Based on 2T/ha wheat yield

Control timing

Yield gain through effective early wild radish control

39

25.5

Spray early !!

“Pyrasulfotole provides a highly effective alternative mode of action to control broadleaf weeds and help cereal growers manage resistance to older chemistry.”

Craig White, Bayer Crop Science

2013 Global Herbicide Resistance Challenge

The discovery of a truly new mode of action herbicide is a very rare event.

“

www.ahri.uwa.edu.au - 2009

“ In fact, there hasn’t been a herbicide with a new mode of action introduced to the Australian market for over 20 years, stressing the fact that we must preserve the use of the herbicide resource we have today.”

http://www.ahri.uwa.edu.au/

The weed spectrum is broad

Bedstraw (Gallium spp.)

Bifora (Bifora testiculata)

Bindweed (Fallopia convolvulus)

Capeweed (Arctotheca calendula)

Canola, volunteer (Brassica napus)

Chickpea, volunteer (Cicer arietinum)

Corn gromwell (Buglossoides arvensis)

Deadnettle (Lamium amplexicaule)

Doublegee/spiny emex (Emex australis)

Faba bean, volunteer (Vicia faba)

Field pea (Pisum sativum)

Fumitory (Fumaria densiflora)

Indian hedge mustard (Sisymbrium orientale)

Lentil, volunteer (Lens culinaris)

Lucerne, volunteer seedling (Medicago sativa)

Lupin, volunteer (Lupinus spp.)

Medic, volunteer (Medicago spp.)

Paterson’s curse (Echium plantagineum)

Prickly lettuce (Lactuca serriola)

Saffron thistle (Carthamus lanatus)

Shepherd’s purse (Capsella bursa-pastoris)

Sowthistle (Sonchus oleraceus)

Sub clover, volunteer (Trifolium subterraneum)

Turnip weed (Rapistrum rugosum)

Vetch, volunteer (Vicia sativa)

Wild radish (Raphanus raphanistrum)

Wild turnip (Brassica tournefortii)

Wireweed (Polygonum aviculare)

Yellow burrweed (Amsinckia lycopsoides)

52.7

63.7

78.1

82.6

84.9 85.7 95.2

95.7 95.9 97.6

98.7

40

50

60

70

80

90

100

B+I

MCPA LVE 900 mL–1.5 L

Brodal 200–400 mL

Buctril MA 1.2–1.5 L

Jaguar 750 mL–1 L

Flight EC 720 mL

Jaguar + MCPA LVE

800 mL + 200–600 mL

Velocity 800 mL–1L

Precept 2 L

Velocity + MCPA LVE 670–700 mL + 200–500 mL

Velocity + Tigrex

670–700 mL + 500 mL

Combined 24 sites – all around W.A. multiple years

Resistant wild radish control – from early spraying in the field

46% difference

% c

on

tro

l

I F C+I C+F C+F+I

C+F+I H+C H+I H+C+I

H+C +F+I

Logran + MCPA LVE 15 g + 500 mL

www.weedresistance.com.au

52.7

63.7

78.1

82.6

84.9 85.7 95.2

95.7 95.9 97.6

98.7

40

50

60

70

80

90

100

B+I


Brodal 200–400 mL


Jaguar 750 mL–1 L

Flight EC 720 mL

Jaguar + MCPA LVE

800 mL + 200–600 mL


Precept 2 L


Velocity + Tigrex

670–700 mL + 500 mL


Weeds not controlled = Left behind


46% difference

% c

on

tro

l

I F C+I C+F C+F+I

C+F+I H+C H+I H+C+I

H+C +F+I


47.3

36.3

21.9 17.4

15.1 14.3

4.8 4.3 4.1 2.4 1.3

%


52.7

63.7

78.1

82.6

84.9 85.7 95.2

95.7 95.9 97.6

98.7

40

50

60

70

80

90

100

B+I


Brodal 200–400 mL


Jaguar 750 mL–1 L

Flight EC 720 mL

Jaguar + MCPA LVE

800 mL + 200–600 mL


Precept 2 L


Velocity + Tigrex

670–700 mL + 500 mL


Weeds not controlled = Left behind


46% difference

% c

on

tro

l

I F C+I C+F C+F+I

C+F+I H+C H+I H+C+I

H+C +F+I


47.3

36.3

21.9 17.4

15.1 14.3

4.8 4.3 4.1 2.4 1.3

%


Do you want to only have this

option?

Matricaria and Statice *seedlings

Matricaria (~730 species)

Oncosiphon piluliferum Globe Chamomile

Oncosiphon suffruticosum Colomba daisy

Native of South Africa. Strong scented and erect annual, flowers in spring

Statice

Limonium lobatum Winged Sea-lavender

Garden escape. Short lived perennial, flowers in spring

• Presentation Title • October 2011

98 96 95 95 95 90 90

80

70

60

50 50

40

20 20

0

10

20

30

40

50

60

70

80

90

100%

Sta

tice

cont

rol

HP10AUSBV3VD10 - efficacy of Group H Velocity and Precept compared to alternate products for Statice (Limonium lobatum) control. 110 DAA, Birchip Vic, 2010

Unacceptable control

Target Stage at Application Target LIISI Stage Majority 6 true leaves,

leaf pairs or whorls unfolded

% Stage Majority 40 Stage Minimum 14 % Stage Minimum 20 Stage Maximum 19 % Stage maximum 30 Density 30 – 100 m2

Group H pyrasulfotole in Velocity and Precept provide excellent control of Statice

09ME01 Nungarin WA (2009) Control of Oncosiphon piluliferum in a wheat crop Conducted by Department of Agriculture

Growth stage of Oncosiphon piluliferum (Globe Chamomile) at the time of application

09ME01 Nungarin WA (2009) Conducted by Department of Agriculture

Control of Oncosiphon piluliferum in a wheat crop

Treatment Rate

/ha

18/08/09 14 DAA

26/08/09 22 DAA

09/09/09 36 DAA

Oncosiphon Counts

Aves/m2 Diuron 500mL 33 18 30 110.8 2,4-D ester LV 1000mL 55 37 57 94.4 Diuron + 2,4-D ester LV 250+ 500mL 30 32 45 116.7 Glean 20g 10 3 3 120.3 Ally 5g 28 18 10 144.7 Logran 20g 20 13 15 104.9 Sencor + Broadstrike 100g+25g 37 28 70 38.9 Hammer+MCPA amine 100mL+500mL 82 68 77 41.3 Tigrex 1000mL 65 32 37 90.9 Bromicide MA 1400mL 63 58 60 24.5 Starane 1000mL 78 90 98 0.6 Hotshot 750mL 70 87 98 1.7 Tordon 242 1000 mL 55 67 92 12.6 Ecopar+MCPA amine 400+500mL 73 60 63 75.2 MCPA LVE 500 1000mL 37 38 33 116.7 Velocity 670ml 99 100 100 0.0 Velocity 1000mL 99 100 100 0.0 Velocity + Ally 670ml + 5g 99 100 98 1.5 Hussar 100mL 50 40 47 105.2 Nil 0 3 3 245.5

Comments: Anything with Velocity in it has been the standout treatment. Velocity does not appear to have damaged the crop. Herbicides such as Tordon 242, Starane, Hotshot that were slow to show effect have also been very active at the 36 day post spray rating.

Trial Crop Weeds

WE27 Mukinbudin Justica CL wheat

Matricaria - 168 per m2 (cot 43%, 2 lf 55%, 3 lf 2%) odd larger

WE29 Mollerin Scope barley Matricaria - 1370 per m2 (cot 87%, 2 lf 5%, 4 lf 2%, 6lf 2%, 8lf 1%, 10 lf 1%, 12 lf 1%, 14 lf 1%) odd larger

WE28 Mukinbudin Scope barley Statice - 74 per m2 (cot 66%, 2 lf 18%, 6lf 1%, 8 lf 5%, 10 lf 4%, 12lf 3%)

Thanks to Matt Willis for assistance with WE28 – Matricaria Mollerin

HP16WE27, 28, 29 Velocity: Control of matricaria (actually Calomba daisy) Oncosiphon suffruticosum and statice (winged sea lavender) Limonium lobatum Mukinbudin and Mollerin, WA 2016

0

10

20

30

40

50

60

70

80

90

100

Velocity670 mL+

Hasten 1%

Velocity670 mL+

Tigrex 500mL Hasten

1%

Velocity670 mL+

MCPA LVE600 420 mLHasten 1%

Velocity670 mL+

Lontrel 80g/ha +

Hasten 1%

Precept150EC

1500 mL +Hasten 1%

Precept150EC

1500 mL +metribuzin100 g/ha +Hasten 1%

Aptitude200 g/ha +MCPA LVE

600 420mL/ha

Sharpen 17g/ha +

Hasten 1%

Reglone700 mL/ha

Jaguar 1 L Triathlon 1L/ha

Tigrex 1 L Paradigm25 g/ha +MCPA LVE600 420mL/ha +BS1000

MCPA LVE600 1.75 L

% W

eed

cont

rol

WE27 % Matricaria control WE29 % Matricaria control WE28 % Statice control

Pyrasulfotole products recorded the best control of both weeds. Velocity was consistent at 670 mL/ha

Sharpen and Reglone recorded good weed control but crop biomass reduction was 18 and 25%


® ®

®

®

® ® ® ® ®

Thanks to Matt Willis for assistance with WE28 –Mollerin

Pyrasulfotole products recorded the best control of both weeds. Velocity was consistent at 670 mL/ha. Group C and H are driving weed control not only in radish but secondary weeds. Sharpen and Reglone recorded good weed control but crop biomass reduction was 18 and 25%


2012 Matricaria North Kellerberrin

Conclusion

Pyrasulfotole (Group H) was introduced by Bayer in 2008. Combined with Crop Safener - Bayer products can be safely applied early = small weeds & maximum Return On Investment Pyrasulfotole products recorded the best control of matricaria and statice in a range of trials over a number of years. Pyrasulfotole is effective on a broad range of broadleaf weeds, Bayer has an extensive Integrated Weed Management Program at www.weedresistance.com.au


Thanks for watching & listening

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pyrasulfotole and hard to control weeds · pyrasulfotole and hard to control weeds grdc rcsn...

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