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AUTHOR
Eric P. Prostko
Professor and Extension Weed Specialist
University of Georgia

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TABLE OF CONTENTS
  1. Peanut Weed Control Update - 2017
  2. 2016 Peanut Weed Control Research
  3. 2016 Peanut Weed Control Research
  4. Somewhere in SW Georgia on July 8, 2016
  5. Peanut Weed Control - 2016
  6. Peanut Weed Control - 2016
  7. Top Herbicides Applied to Peanut (% of Planted Acres)
  8. Prowl vs. Sonalan Research Summary
  9. Starting Clean!!!!!
  10. Palmer Amaranth Height
  11. Flumioxazin
  12. Panther 4SC Mixing Order (liquid flumioxazin)
  13. Not Rowel FX!!!!!!!!! Valor + Classic
  14. Valor In-Furrow Oh Sxxt!
  15. ELE-MAX ENC
  16. Influence of ENC @ 32 oz/A on Peanut Leaf Burn - 3 DAT
  17. Gramoxone 2SL @ 8 oz/A + Dual Magnum 7.64EC @ 16 oz/A - 3 DAT
  18. The Influence of Ele-Max ENC on Peanut Yield - 2016*
  19. J-Rooting Peanuts - No Herbicides Applied GA-06G, Planted May 5, 2014, Pictures May 20
  20. Dual Magnum 7.62EC
  21. Does Dual Magnum 7.62EC @ 42 oz/A (2X) Applied PRE Cause Peanut J-Rooting??
  22. Does Dual Magnum 7.62EC @ 42 oz/A (2X) Applied PRE Cause Peanut Yield Loss?
  23. Sinbar Injury
  24. Peanut (GA-06G) Response to Sinbar 80WG Applied PRE
  25. Peanut (GA-06G) Response to Sinbar 80WG Applied PRE
  26. Peanut stand, plant height, and yield reductions caused by preemergence applications of terbacil, 2016.
  27. Peanuts/2,4-D/Dicamba
  28. Peanut (GA-12Y) Response to Enlist Duo 3.3SL (glyphosate + 2,4-D choline) Applied at Various Times @ 56 oz/A
  29. Peanut (GA-12Y) Yield Losses (%) Caused by Enlist Duo 3.3SL - 2016
  30. Peanut (GA-06G) Response to Engenia 5SL (dicamba) Applied at Various Times @ 12.8 oz/A
  31. Peanut (GA-06G) Yield Losses (%) Caused by Engenia 5SL - 2016
  32. Peanut Yield Loss Caused By Simulated Drift Rates (1X) - 2016
  33. Peanut Yield Loss Caused By Simulated Drift Rates (1/10X) - 2016
  34. Peanut Yield Loss Caused By Simulated Drift Rates (1/100X) - 2016
  35. 2016 Nozzle Research: Prowl + Valor + Strongarm (PRE) fb Cadre + Dual Magnum + 2,4-DB (45 DAP)
  36. New Labels 2017?
  37. Glyphosate/Peanuts Again in 2016
  38. What do the top Georgia peanut growers do? 2015 Georgia Peanut Achievement Club Winners
  39. Webster County - Sept 4, 2015
  40. UGA-Tifton - December 6, 2016
  41. Questions?



SLIDE CONTENTS
  1. Peanut Weed Control Update - 2017 Eric P. Prostko, Ph.D. Professor and Extension Weed Specialist Department of Crop & Soil Sciences
  2. 2016 Peanut Weed Control Research PE-08B-16 June 22, 2016 56 DAP
  3. 2016 Peanut Weed Control Research PE-08B-16 August 9, 2016 104 DAP
  4. Somewhere in SW Georgia on July 8, 2016
  5. Peanut Weed Control - 2016 PE-12B-16 July 8 66 DAP Prowl H20 @ 32 oz/A PRE Valor @ 3 oz/A PRE Strongarm @ 0.225 oz/A PRE Cadre @ 4 oz/A 41 DAP Dual Magnum @ 16 oz/A 41 DAP 2,4-DB @ 16 oz/A 41 DAP $46.00/A 6313 lbs/A
  6. Peanut Weed Control - 2016 PE-12B-16 July 8 66 DAP Prowl H20 @ 32 oz/A PRE Gramoxone @ 12 oz/A 11 DAP Storm @ 16 oz/A 11 DAP Dual Magnum @ 16 oz/A EPOST Cadre @ 4 oz/A 41 DAP Dual Magnum @ 16 oz/A 41 DAP 2,4-DB @ 16 oz/A 41 DAP $43.00/A 6041 lbs/A
  7. Top Herbicides Applied to Peanut (% of Planted Acres) NASS Chemical Use Survey 2013
  8. Prowl vs. Sonalan Research Summary 2016 Prices/gal: Sonalan 3EC = $42; Prowl 3.3EC = $27; Prowl H2O 3.8ASC= $35 Cost for 1 qt/A: Sonalan 3EC = $10.50; Prowl 3.3EC = $6.75; Prowl H2O 3.8ASC= $8.75 LB AI for 1 qt/A : Sonalan 3EC = 0.75; Prowl 3.3EC = 0.83; Prowl H20 ASC= 0.95
  9. Starting Clean!!!!! 4-5 tall AMAPA Mowed Disked Rototilled 2X Photo taken 17 Days later
  10. Palmer Amaranth Height Low = 1.5 High = 9.5 Average = 5.3 9/19 (47%) taller than avg.
  11. Flumioxazin
  12. Panther 4SC Mixing Order (liquid flumioxazin)
  13. Not Rowel FX!!!!!!!!! Valor + Classic
  14. Valor In-Furrow Oh Sxxt! Variety: GA-06G Planting Date: May 17, 2016 Pictures: July 8, 2016 and at harvest Panther 4SC 3 oz/A INFR Photos: Dr. Jason Sarver, Mississippi State University Admire Pro INFR
  15. ELE-MAX ENC Helena 11-8-5 + B, Fe, Mn, Cu, Zn, Co, Mo 1 qt/A = $4.50 Does it act as a peanut safener? Does it improve weed peanut control? Does it improve peanut yields?
  16. Influence of ENC @ 32 oz/A on Peanut Leaf Burn - 3 DAT LSD (0.10) = 4 CV = 14.27 (8 oz/A) (8 oz/A + 16 oz/A) (12 oz/A + 16 oz/A + 16 oz/A) PE-20-16 May 19
  17. Gramoxone 2SL @ 8 oz/A + Dual Magnum 7.64EC @ 16 oz/A 3 DAT - ENC + ENC @ 32 oz/A
  18. The Influence of Ele-Max ENC on Peanut Yield 2016* *Averaged over 4 herbicide treatments. PE-20-16 GA-06G P = 0.2435 CV = 11.7
  19. J-Rooting Peanuts No Herbicides Applied GA-06G, Planted May 5, 2014, Pictures May 20
  20. Dual Magnum 7.62EC 42 oz/A - PRE NTC 34 DAT
  21. Does Dual Magnum 7.62EC @ 42 oz/A (2X) Applied PRE Cause Peanut J-Rooting?? P = 0.1660 CV = 13.02 34 DAT PE-61-16
  22. Does Dual Magnum 7.62EC @ 42 oz/A (2X) Applied PRE Cause Peanut Yield Loss? P = 0.2025 CV = 8.37 PE-10-16
  23. Sinbar Injury
  24. Peanut (GA-06G) Response to Sinbar 80WG Applied PRE PE-21-16 21 DAT NTC Sinbar 80WG 4 oz/A Sinbar 80WG 2 oz/A
  25. Peanut (GA-06G) Response to Sinbar 80WG Applied PRE PE-21-16 21 DAT NTC Sinbar 80WG 1 oz/A Sinbar 80WG 0.5 oz/A
  26. Table 1. Peanut stand, plant height, and yield reductions caused by preemergence applications of terbacil, 2016. aMeans in the same column with the same letter are not significantly different according to DMRT (P=0.10). b56 DAP c120 DAP
  27. Peanuts/2,4-D/Dicamba How much? Vapor Drift = 1/1000thX? Particle Drift = 1/100thX? When? Tank-contamination Is dicamba always worse than 2,4-D?
  28. Peanut (GA-12Y) Response to Enlist Duo 3.3SL (glyphosate + 2,4-D choline) Applied at Various Times @ 56 oz/A PE-05-16 August 12 107 DAP
  29. Peanut (GA-12Y) Yield Losses (%) Caused by Enlist Duo 3.3SL - 2016 1DAP = days after planting. 256 oz/A = 0.7 lb ae 2,4-D + 0.74 lb ae glyphosate; 5.6 oz/A = 0.07 lb ae 2,4-D + 0.074 lb ae of glyphosate; 0.56 oz/A= 0.007 lb ae 2,4-D + 0.0074 lb ae glyphosate. PE-05-16 LSD 0.10 = 8 CV = 38
  30. Peanut (GA-06G) Response to Engenia 5SL (dicamba) Applied at Various Times @ 12.8 oz/A PE-04-16 August 12 107 DAP 15 DAP 30 DAP 60 DAP 90 DAP
  31. Peanut (GA-06G) Yield Losses (%) Caused by Engenia 5SL - 2016 1DAP = days after planting. PE-04-16 LSD 0.10 = 7 CV = 23
  32. Peanut Yield Loss Caused By Simulated Drift Rates (1X) - 2016 Engenia = 12.8 oz/A Enlist Duo = 56 oz/A
  33. Peanut Yield Loss Caused By Simulated Drift Rates (1/10X) - 2016 Engenia = 1.28 oz/A Enlist Duo = 5.6 oz/A
  34. Peanut Yield Loss Caused By Simulated Drift Rates (1/100X) - 2016 Engenia = 0.128 oz/A Enlist Duo = 0.56 oz/A
  35. 2016 Nozzle Research Prowl + Valor + Strongarm (PRE) fb Cadre + Dual Magnum + 2,4-DB (45 DAP) PE-12-16 August 10 107 DAP 11002DG 11002AIXR TTI02 TADF02-D NTC
  36. New Labels 2017? Zidua 85WG = pyroxasulfone (BASF) Anthem Flex 4SE = Zidua + Aim (FMC) 3.733 lbs Zidua + 0.267 lbs Aim POST With Gramoxone and/or Cadre UGA will not support PRE use Why? No 2X safety margin What about Brake?
  37. Glyphosate/Peanuts Again in 2016 Pierce County Decatur County
  38. What do the top Georgia peanut growers do? 2015 Georgia Peanut Achievement Club Winners 12 growers 6426 lb/A average yield GA State Avg. = 4470 lb/A 12/12 - irrigated 9/12 - bottom plow 12/12 - twin rows Herbicides 10/12 - Sonalan 10/12 - Valor 2/12 - Dual 9/12 - Cadre 6/12 - 2,4-DB 2/12 - Prowl 2/12 - Strongarm
  39. Webster County Sept 4, 2015 2013-2016 Dryland peanuts 18 oz of Cadre over 4 years
  40. UGA-Tifton December 6, 2016
  41. Questions? eprostko@uga.edu www.gaweed.com