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Peanut Response to Warrant (Acetochlor)

Peanut Response to Warrant (Acetochlor). E.P. Prostko*, T.L. Grey, and D.L. Jordan. U.S. Planted Acres – 2012 (X 1000). NASS June 29, 2012. PPI/PRE Sonalan Prowl/Pendimax Dual Magnum/Generics Outlook/Propel Pursuit Spartan Charge Solicam Strongarm Valor. POST Aim (Harvest Aid)

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Peanut Response to Warrant (Acetochlor)

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  1. Peanut Response to Warrant (Acetochlor) E.P. Prostko*, T.L. Grey, and D.L. Jordan

  2. U.S. Planted Acres – 2012(X 1000) NASS June 29, 2012

  3. PPI/PRE Sonalan Prowl/Pendimax Dual Magnum/Generics Outlook/Propel Pursuit Spartan Charge Solicam Strongarm Valor POST Aim (Harvest Aid) Gramoxone Inteon/Firestorm/Parazone Basagran Ultra Blazer Cadre/Impose Classic Cobra Poast/Poast Plus Pursuit Select/Arrow/Trigger Storm 2,4-DB The Peanut Weed Control Toolbox19 active ingredients

  4. tested under experimental MON 63410 • capsule suspension formulation (micro-encapsulated) • 3CS • Acetochlor + safener = Harness or Surpass • First mention in literature was in 1970 (A new selective herbicide: MON 097, PROC NCWCC 25:56-59) • Currently labeled for use in cotton, soybeans, field corn, grain sorghum • MOA = 15 • Very long chain fatty acid inhibitor • Same MOA as metolachlor (Dual)

  5. Microencapsulation • small herbicide particles surrounded by polymer shell suspended in carrier

  6. Warrant is not Lasso!!!!

  7. Objective • To evaluate the tolerance of peanut to various applications of Warrant (acetochlor) under weed-free conditions.

  8. Materials and Methods – IGeneral • Small-plot techniques • Locations (4) • Georgia • Ty Ty, Plains • North Carolina • Rocky Mount, Lewiston • 4 replications • weed-free • Irrigated • ANOVA • LSD (0.05)

  9. Materials and Methods – II Locations *R/B = rip and bed

  10. Materials and Methods – IIITreatments • PPI, PRE, EPOST, POST • Warrant @ 3 or 6 pt/A • Dual Magnum @ 1.33 pt/A • EPOST • Gramoxone Inteon @ 12 oz/A + Storm @ 16 oz/A + • Warrant @ 3 pt/A or • Dual Magnum @ 1.33 pt/A • POST • Cadre @ 4 oz/A + • Warrant @ 3 pt/A or • Dual Magnum @ 1.33 pt/A

  11. Results

  12. Influence of PPI Treatments on Peanut Yield (lbs/A) LSD (0.05) Ponder = 354 Plains = NS Rocky Mount = 748 Lewiston = 864

  13. Influence of PRE Treatments on Peanut Yield (lbs/A) -7.2% LSD (0.05) Ponder = 354 Plains = NS Rocky Mount = 748 Lewiston = 864

  14. Influence of EPOST Treatments on Peanut Yield (lbs/A) LSD (0.05) Ponder = 354 Plains = NS Rocky Mount = 748 Lewiston = 864

  15. Influence of POST Treatments on Peanut Yield (lbs/A) -7.2%, -8.1% LSD (0.05) Ponder = 354 Plains = NS Rocky Mount = 748 Lewiston = 864

  16. Influence of EPOST Gramoxone/ Storm on Peanut Yield (lbs/A) -9.6% LSD (0.05) Ponder = 354 Plains = NS Rocky Mount = 748 Lewiston = 864

  17. Influence of POST Cadre Treatments on Peanut Yield (lbs/A) -9.7% LSD (0.05) Ponder = 354 Plains = NS Rocky Mount = 748 Lewiston = 864

  18. Peanut Response to Warrant @ 6 pt/APPI or PRE NTC PPI PRE* Ponder July 25 77 DAP

  19. Peanut Response to Warrant @ 6 pt/AEPOST OR POST NTC EPOST (18 DAP) POST (36 DAP)* Ponder July 25 77 DAP

  20. Summary • No yield loss from any treatment at Plains, Rocky Mount, or Lewiston • Significant yield loss at Ponder from …… • Warrant @ 6 pt/A – PRE and POST (7.2-7.4%) • Dual Magnum @ 1.33 pt/A – POST (8.1%) • Gramoxone Inteon + Storm + Dual Magnum – EPOST (9.6%) • Cadre + Warrant (3 pt/A) – POST (9.7%)

  21. Questions? www.gaweed.com

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