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P.M. Eure*, E.P. Prostko, and R.M. Merchant
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SLIDE CONTENTS
- Peanut Response to Foliar Applied Pyroxasulfone Tank-Mixtures P.M. Eure*, E.P. Prostko, and R.M. Merchant Department of Crop & Soil Sciences
- Introduction Inhibitor of VLCFA synthesis Low use rates Developed for use in corn, soybean, sunflower, and wheat
- Current and Future Pyroxasulfone Products
- Weed Control with Pyroxasulfone Non-treated control Pyroxasulfone 85 WG @ 1.5 oz/A* * 5 WAT
- Previous Research Peanut Tolerance (Prostko et al. 2011) PRE Significant stunting at 1 of 2 locations POST Excellent tolerance when applied 44-51 days after planting No reduction in peanut yield E.P. Prostko, T.L. Grey, T.M. Webster, and R.C. Kemerait (2011) Peanut Tolerance to Pyroxasulfone. Peanut Science: July 2011, Vol. 38, No. 2, pp. 111-114.
- 8 oz/A 4 oz/A Pyroxasulfone 85WG Applied 10 DAP P.M. Eure, E.P. Prostko, A.S. Culpepper, W.K. Vencill, and R.M. Merchant (2012) Cotton and Peanut Response to Pyroxasulfone, Southern Weed Science Society PROC: 65:101.
- Peanut Response to Pyroxasulfone 85WG @ 8 oz/A + NIS @ 0.25% v/v 60 DAP 90 DAP 99 DAP
- Objective Evaluate peanut response to pyroxasulfone applied POST with and without tank-mix partners
- Materials and Methods-I Location: UGA Ponder Research Farm 2009 2010 Soil type: Tifton loamy sand
- Materials and Methods-II Factorial design (2 x 6 ) Pyroxasulfone 85WG (2) 0 or 4 oz/A Foliar herbicide system (6) No foliar herbicide Paraquat 2SL (8 oz/A) Paraquat 2SL (12 oz/A) + Bentazon 4SL (8 oz/A) Paraquat 2SL (12 oz/A) + Bentazon/Acifluorfen 4SL (24 oz/A) Imazapic 2AS (4 oz/A) Lactofen 2SC (12.5 oz/A) All herbicide treatments included 0.25% v/v NIS
- Materials and Methods-III Application method: CO2-pressurized backpack sprayer 15 GPA DG 11002XR spray tips Cultivar: ‘GA-06G’ Plots maintained weed- free
- Materials and Methods-IV Data recorded Peanut stunting Yield Adjusted to 10% moisture Data subjected to ANOVA and means separated using Fisher’s Protected LSD Test (P = 0.10) when appropriate
- Results - Statistics No interaction between year, pyroxasulfone rate, and foliar herbicide system Main effects will be discussed: Pyroxasulfone rate Foliar herbicide system
- 2009
- Peanut Stunting *Data pooled over foliar herbicide systems
- Paraquat 2SL @ 8 oz/A Pyroxasulfone 85WG @ 4 oz/A + Paraquat 2SL @ 8 oz/A 42 DAT
- Peanut Stunting *Data pooled over pyroxasulfone rates
- NTC Pyroxasulfone 85WG @ 4 oz/A + Paraquat 2SL @ 12 oz/A + Bentazon 4SL @ 8 oz/A 42 DAT
- Peanut Yield *Data pooled over foliar herbicide systems P=0.42
- Peanut Yield *Data pooled pyroxasulfone rates P=0.21
- 2010
- Peanut Stunting *Data pooled over foliar herbicide systems
- Paraquat 2SL @ 8 oz/A Pyroxasulfone 85WG @ 4 oz/A + Paraquat 2SL @ 8 oz/A 29 DAT
- Peanut Stunting *Data pooled pyroxasulfone rates
- NTC Pyroxasulfone 85WG @ 4 oz/A + Paraquat 2SL @ 12 oz/A + Bentazon 4SL @ 8 oz/A 29 DAT
- *Data pooled over foliar herbicide systems Peanut Yield P=0.33
- Peanut Yield *Data pooled pyroxasulfone rates P=0.57
- Summary Peanut stunting 2009: Pyroxasulfone did not influence peanut stunting 2010: Addition of pyroxasulfone to tank-mixtures increased peanut stunting 8% (6 DAT) Complete recovery (29 DAT) Peanut yield No interaction between pyroxasulfone and foliar systems No main effect of pyroxasulfone or foliar system on yield
- Future Research Evaluate peanut cultivar response to PRE applied pyroxasulfone Peanut tolerance to split applications EPOST + POST Tank-mixes of pyroxasulfone with other herbicides Weed management systems Evaluate pyroxasulfone efficacy on various weed species
- Questions or Comments?
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