2011 beltwide: new products/technologies/concerns weeds

2011 Beltwide: New Products/Technologies/Concerns

WEEDS

2011 Beltwide Consultants Conference

New Products/Technologies

1. Glytol + Liberty Link Cotton

2. 2,4-D Resistant Cotton (2015?)

3. Dicamba Resistant Cotton (2015?)

1. Exceptional tolerance to Ignite and Roundup

2. Systems approach including residuals and other chemistry will offer excellent control of most weeds.

Glytol + Liberty Link Cotton

Ignite vs. Roundup Weed Ignite Roundup

Eveningprimrose + -Morningglory + -Volunteer peanut + -Goosegrass - +Large grasses - +Perennial grasses - +Nutsedge - +Tropical spiderwort - -GR Ragweed + -GR Horseweed -/+ -GR Palmer amaranth -/+ -

Prowl H20 PRE

Glyfos X-tra 48 oz @ 2 lf cotton/ 3” AMAPA

Glyfos X-tra 48 oz @ 7 lf cotton/ 12” AMAPA

Direx + MSMA @ 15 lf cotton/ 18” AMAPA

Prowl H20 PRE

Ignite 33 oz @ 2 lf cotton/3” AMAPA

Glyfos X-tra 48 oz @ 7 lf cotton/ 0” AMAPA

Direx + MSMA @ 15 lf cotton/3” AMAPA

Non-treated Ignite

12 DAT

Palmer response to Ignite

WATER VOLUME AND NOZZLE TYPE IS CRITICAL

Do not apply within an hour of sunrise

MUST KILL IT WITH THE FIRST APPLICATION

Application Timing is Critical in LL Cotton

3” Palmer: 29 to 32 oz/A = >98% control

3-4”: 36 oz/A = 88 to 100% control

4-6” Palmer: 43 oz/A = 70 to 100% control

>6” Palmer: 43 oz and get the hoes ready

Phytogen Widestrike Cotton

1. Confers tolerance to Ignite

2. Tolerance not complete; injury will occur and yield loss can occur if you don’t know what you are doing.

3. According to EPA, Ignite can be applied to widestrike cotton.

4. However, grower is liable as neither Bayer nor Dow recommend or warrant the use of Ignite on Widestrike cotton

375 WideStrike Cotton Tolerance to Multiple Applications of Ignite

Number of 29 oz /A Ig nite Applic ations

1417

1444

1224

0 200 400 600 800 1000 1200 1400 1600

Pounds Lint Cotton

a

a

b

No Ignite

Ignite 2 lf and 7 lf

Ignite 2 lf, 7 lf, bloom

2, 4-D Resistant Cotton

2,4-D resistant cotton

sensitive cotton

Will There Be Value in 2,4-D- or Dicamba-Resistant Traits for Cotton Growers?

1. Tool for managing GR ragweed, horseweed, Palmer, morningglory, perennial weeds, winter annual weeds

2. No preplant interval for burndown

3. A new mode of action for in-crop control

4. Applications overtop of cotton

5. Price of herbicides are currently economical

6. Option to rotate with Roundup for resistance mgmt

1.5 pt of 2,4-D

12 DAT 24 DAT

Ignite Ignite + 2,4-D 0.75 lb

12 DAT

Ignite Ignite + dicamba 0.5 lb

12 DAT

Additional Concerns

Loss of currently used herbicides?MSMA Cotoran

Sustainability of Ignite?

Off target movement of 2,4-D and dicamba

Are You Comfortable Making 2,4-D or Dicamba In-Crop Weed Management Recommendations TODAY?

1. Fair

2. No

3. No

4. No

5. Comfortable with dicamba, not with 2,4-D

6. No

7. Absolutely not

8. No

9. Yes, but only in some locations

10. No way, not today

2,4-D Ester

2,4-D Amine

New Formulation

N

S

SESW

EW

N

NENW

Potted cotton plants placed in all directions @ 5, 10, 20, 40, 80 and 160 ft

4 plants per station

Volatility distance – (plants placed in field after drift pots were removed)

Time of Day (hr)

0 500 1000 1500 2000 2500

Tem

pera

ture

(F

)

65

70

75

80

85

90

95

100Sept 9Sept 10Sept 11

Temperature (F) Sept 9-11

Application

Distance from Herbicide Source (feet)

5 10 20 40 80 160

Vis

ual I

njur

y (%

)

0

10

20

30

40

50

60EsterAmineNew Form

Visual Injury 27 DAA from 2,4-D Volatility, October 6, 2010

Error bar is 1 Std error of mean

Averaged across

directions

Entire 48 hrs

Volatility Injury to Cotton: Tunnel/Dome Data

John Richburg2010 Project ReviewNovember, 2010

Formulation x Exposure

Ester E

ntire

Amine

Ent

ire

New F

orm

Ent

ire

Ester T

1

Amine

T1

New F

orm

T1

Ester T

2

Amine

T2

New F

orm

T2

Vis

ual I

njur

y (%

)

0

20

40

60

80

Visual Injury 27 DAA from 2,4-D Volatility under Tunnels (October 6, 2010)

20

20

20

1913

0 046

Entire = 48 hrs

T1 = 1st 24 hrs

T2 = 2nd 24 hrs

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