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Response of Roundup Ready Flex Cotton to Co-application with Insecticides and Plant Growth Regulators Jimmy X. Zumba D. K. Miller, R. Bagwell, E. Burris,

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Presentation on theme: "Response of Roundup Ready Flex Cotton to Co-application with Insecticides and Plant Growth Regulators Jimmy X. Zumba D. K. Miller, R. Bagwell, E. Burris,"— Presentation transcript:

1 Response of Roundup Ready Flex Cotton to Co-application with Insecticides and Plant Growth Regulators Jimmy X. Zumba D. K. Miller, R. Bagwell, E. Burris, E. L. Clawson, S. T. Kelly, B. R. Leonard, A. M. Stewart, and M. S. Mathews LSU AgCenter

2 Roundup Ready Technology Over 1,200,000 cotton acres planted in LA in last two years. 99 % Transgenic cotton in 2006 Mostly Roundup Ready varieties for weed control Over 1,200,000 cotton acres planted in LA in last two years. 99 % Transgenic cotton in 2006 Mostly Roundup Ready varieties for weed control

3 Roundup Ready Technology Eliminate applications and tillage operations Easy application trigger Broad spectrum of control Tank-mix partners Flex introduction (variety and herbicide) Eliminate applications and tillage operations Easy application trigger Broad spectrum of control Tank-mix partners Flex introduction (variety and herbicide)

4 Justification -Synergies or negative interactions between this new herbicide and other agrochemicals, growth regulators and insecticide, and on integrated pest and crop management strategies

5 Objectives -Investigate effects of insecticides and plant growth regulators when co-applied with MON 3539 (Roundup Herbicide) on Roundup Ready Flex cotton. -Determine if possible effects are influenced by cotton growth stage at time of application. -Investigate effects of insecticides and plant growth regulators when co-applied with MON 3539 (Roundup Herbicide) on Roundup Ready Flex cotton. -Determine if possible effects are influenced by cotton growth stage at time of application.

6 Materials and Methods Northeast Research Station, St. Joseph LA in 2005 and 2006 ST4554B2RF RCB; factorial treatment arrangement; 4 replications Plots 6.67’ x 12’ Tractor mounted compressed air sprayer; 110 02; 32 PSI; 15 GPA. Northeast Research Station, St. Joseph LA in 2005 and 2006 ST4554B2RF RCB; factorial treatment arrangement; 4 replications Plots 6.67’ x 12’ Tractor mounted compressed air sprayer; 110 02; 32 PSI; 15 GPA.

7 Materials and Methods Factor A: Growth Stage Pinhead Square First Bloom Factor B: Herbicide Treatment MON 3539 (0.75 lb ai/A) MON 3539 (0.75 lb ai/A) + Mepex Gin Out (0.022 lb ai/A) Factor C: Insecticide Acephate (0.5 lb ai/A)Intruder (0.028 lb ai/A) Battery (0.1 lb ai/A)Karate Z (0.033 lb ai/A) Baythroid (0.033 lb ai/A)Lannate (0.4 lb ai/A) Bidrin (0.4 lb ai/A)Larvin (0.6 lb ai/A) Capture (0.0616 lb ai/A)Mustang Max (0.022 lb ai/A) Centric (0.047 lb ai/A)Prolex (0.016 lb ai/A) Curacron (1.0 lb ai/A)Steward (0.11 lb ai/A) Denim (0.01 lb ai/ATracer (0.75 lb ai/A) Diamond (0.58 lb ai/A)Trimax (0.047 lb ai/A) Dimethoate (0.25 lb ai/A)Vydate (0.4 lb ai/A) Factor A: Growth Stage Pinhead Square First Bloom Factor B: Herbicide Treatment MON 3539 (0.75 lb ai/A) MON 3539 (0.75 lb ai/A) + Mepex Gin Out (0.022 lb ai/A) Factor C: Insecticide Acephate (0.5 lb ai/A)Intruder (0.028 lb ai/A) Battery (0.1 lb ai/A)Karate Z (0.033 lb ai/A) Baythroid (0.033 lb ai/A)Lannate (0.4 lb ai/A) Bidrin (0.4 lb ai/A)Larvin (0.6 lb ai/A) Capture (0.0616 lb ai/A)Mustang Max (0.022 lb ai/A) Centric (0.047 lb ai/A)Prolex (0.016 lb ai/A) Curacron (1.0 lb ai/A)Steward (0.11 lb ai/A) Denim (0.01 lb ai/ATracer (0.75 lb ai/A) Diamond (0.58 lb ai/A)Trimax (0.047 lb ai/A) Dimethoate (0.25 lb ai/A)Vydate (0.4 lb ai/A)

8 Grow Stages Pinhead (Insect Damage) First Bloom

9 Parameters Measured Visual injury 6 and 14 DAT Plant height 7 DAT Seedcotton Yield Cotton maturity Visual injury 6 and 14 DAT Plant height 7 DAT Seedcotton Yield Cotton maturity

10 Percent Visual Injury 6 DAT 1 c No Insecticide 2 c Dimethoate 2 c Bidrin 1 c Capture 1 c Battery 6 b Curacron 10 a Lannate Injury 5 DAT (%)Insecticide Two year combined 1 d 1 cd 0 d No insecticide 1 d 0 d 4 bcd Battery 1 d 4 bcd 0 d Dimethoate 1 d 8 abc 0 d Capture 6 bcd 4 bcd 3 bcd 0 ab Lannate 4 bcd 7 abcd 6 bcd 7 abcd Curacron 13 a 1 d 0 d Bidrin MON 3539 + Mepex Gin Out MON 3539 MON 3539 + Mepex Gin Out MON 3539 First BloomPinhead Square First Year

11 Percent Visual Injury 14 DAT

12 Cotton Height 7 DAT (cm)

13 Cotton Maturity (% first pick) Growth Stage Herbicide Treatment First Year (%) Second Year (%) Two year Combined (%) Pinhead MON 3539 + Mepex Gin Out83.8 a91.3 b87.6 a MON 353983.9 a92.2 b88.1 a First Bloom MON 3539 + Mepex Gin Out83.4 a91.5 b87.5 a MON 353984.8 a91.1 b87.8 a

14 Yield Growth Stage Herbicide Treatment First Year (Seedcotton lbs/A) Second Year (Seedcotton lbs/A) Pinhead MON 3539 + Mepex Gin Out2558 a1929 b MON 35392509 a1955 b First Bloom MON 3539 + Mepex Gin Out2667 a1828 b MON 35392566 a1846 b

15 Conclusion - When applied according to labeled rates in Roundup Ready Flex cotton varieties ®, Roundup Flex herbicide ® co-applications can offer producers the ability to integrate pest and crop management strategies and reduce application costs with minimal effect on crop.

16 Questions?

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