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TITLE    (click title to view slides)
2023 Peanut Weed Control Update

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

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TABLE OF CONTENTS
  1. 2023 Peanut Weed Control Update
  2. Peanut Weed Control - 2022
  3. Peanut Tillage Systems
  4. Preplant Burndowns - 2022
  5. Cutleaf Evening Primrose Control
  6. Peanut Weed Control - 2022 (Sonalan vs. Prowl)
  7. Flumioxazin Formulation Test - 2022 3 oz/A
  8. How long does Valor last?
  9. Palmer Amaranth Control with Flumioxazin Formulations (3 oz/A)
  10. Valor Timing
  11. Peanut Yield as Influenced By Valor 50WG (3 oz/A) Timing
  12. Peanut Emergence - 2022
  13. Valor Cleanout
  14. Peanut Weed Control - 2022
  15. Peanut Weed Control - 2022
  16. Cadre (4 oz/A) + 2,4-DB (16 oz/A) + ...
  17. Tropical Spiderwort/Benghal Dayflower
  18. Tropical Spiderwort - 2022 (Gramoxone + Storm + Group 15’s)
  19. Herbicides for Common Cocklebur Control in Peanut
  20. Morningglory in Peanut
  21. Cadre 2AS @ 4 oz/A + Zidua 4.17SC @ 2.5 oz/A + Strongarm 84WG @ 0.30 oz/A + Cobra 2EC @ 12.5 oz/A + 2,4-DB 2SL @ 16 oz/A + Induce @ 0.25%
  22. Cadre 2AS @ 4 oz/A + Zidua 4.17SC @ 2.5 oz/A + Strongarm 84WG @ 0.30 oz/A + Cobra 2EC @ 12.5 oz/A + 2,4-DB 2SL @ 16 oz/A + Induce @ 0.25%
  23. Cadre 2AS @ 4 oz/A + Zidua 4.17SC @ 2.5 oz/A + Strongarm 84WG @ 0.30 oz/A + Cobra 2EC @ 12.5 oz/A + 2,4-DB 2SL @ 16 oz/A + Induce @ 0.25%
  24. Cadre 2AS @ 4 oz/A + Zidua 4.17SC @ 2.5 oz/A + Strongarm 84WG @ 0.30 oz/A + Cobra 2EC @ 12.5 oz/A + 2,4-DB 2SL @ 16 oz/A + Induce @ 0.25%
  25. History of Classic® Use in Peanut
  26. UGA Current Classic®/Cultivar Use Recommendations
  27. Future Products
  28. Peanut Weed Control - 2022 (Valor + Strongarm vs. Brake + Strongarm)
  29. Peanut Weed Control - 2022 (Valor + Strongarm vs. Vulcarus + Strongarm)
  30. Peanut Field Surrounded by Pine Trees - Bulloch Co. (August 2020)
  31. Arsenal/Peanut Injury
  32. Arsenal/Peanut Yield (2020-2022)
  33. Cadre (imazapic/AC-263,222) vs. Pursuit (imazethapyr) vs. Arsenal (imazapyr) - Structurally not that different but....
  34. Garlon/Peanut/Injury
  35. Garlon/Peanut Yield (2020-2022)
  36. What do the top Georgia peanut growers do? 2022 Georgia Peanut Achievement Club Winners (2021 Crop)
  37. Questions/Comments



SLIDE CONTENTS
  1. 2023 Peanut Weed Control Update Eric P. Prostko Extension Weed Specialist Dept. Crop & Soil Sciences
  2. Peanut Weed Control - 2022 PE-07-22 July 6 70 DAP Start clean Twin rows Strong PRE’s Timely POST’s Hand-Weeding
  3. Peanut Tillage Systems June 2022 Strip-Tillage (Worth Co.) Conventional Tillage (Macon Co.)
  4. Preplant Burndowns - 2022 BN-01-22 (Tift Co.) March 25 30 DAT (Rep 2) 2,4-D 3.8SL @ 16 oz/A
  5. Cutleaf Evening Primrose Control Gramoxone 3SL @ 8 oz/A + Basagran 4SL @ 8 oz/A + 2,4-DB 2SL @ 12 oz/A + NIS @ 0.25% v/v 10 DAT Wayne Nixon (NC Consultant) “You saved the man’s crop. Many thanks!” Personal Text 06/09/22
  6. Peanut Weed Control – 2022 Sonalan vs. Prowl PE-12-22 July 5 69 DAP NTC Sonalan HFP 4EC @ 32 oz/A Valor EZ 4SC @ 3 oz/A Strongarm 84WG @ 0.225 oz/A PRE (1 DAP) Cadre 2AS @ 4 oz/A 2,4-DB 2SL @ 16 oz/A Dual Magnum 7.62EC @ 16 oz/A POST (27 DAP) Prowl H20 3.8SC @ 32 oz/A Valor EZ 4SC @ 3 oz/A Strongarm 84WG @ 0.225 oz/A PRE (1 DAP) Cadre 2AS @ 4 oz/A 2,4-DB 2SL @ 16 oz/A Dual Magnum 7.62EC @ 16 oz/A POST (27 DAP) 6096 lbs/A 6220 lbs/A
  7. Flumioxazin Formulation Test – 2022 3 oz/A PE-23-22 September 7 29 DAT Valor EZ2 4SC
  8. How long does Valor last? *University of Georgia Weather Network
  9. Palmer Amaranth Control with Flumioxazin Formulations (3 oz/A) PE-23-22 Time (DAT) Control (%)
  10. Valor Timing
  11. Peanut Yield as Influenced By Valor 50WG (3 oz/A) Timing PE-16-01 GA Green lbs/A LSD 0.10 = 602 CV = 14.32 Time (DAP) “True Crack” 2” tall 3 lf
  12. Peanut Emergence - 2022 PE-16B-22 GA-06G 1 DAP 3 DAP 5 DAP 7 DAP
  13. Valor Cleanout Worth Co. 06/16/22
  14. Peanut Weed Control - 2022 PE-11-22 July 5 69 DAP NTC Gramoxone 2SL @ 12 oz/A Storm 4SL @ 16 oz/A Anthem Flex 4SE @ 3 oz/A Induce @ 1% v/v EPOST (13 DAP) Cadre 2AS @ 4 oz/A 2,4-DB 2SL @ 16 oz/A Induce @ 0.25% v/v POST (34 DAP) Gramoxone 2SL @ 12 oz/A Storm 4SL @ 16 oz/A Dual Magnum 7.62EC @ 16 oz/A EPOST (13 DAP) Cadre 2AS @ 4 oz/A 2,4-DB 2SL @ 16 oz/A Induce @ 0.25% v/v POST (34 DAP)
  15. Peanut Weed Control - 2022 PE-11-22 July 5 69 DAP NTC Gramoxone 2SL @ 12 oz/A Storm 4SL @ 16 oz/A Warrant 3ME @ 48 oz/A Induce @ 1% v/v EPOST (13 DAP) Cadre 2AS @ 4 oz/A 2,4-DB 2SL @ 16 oz/A Induce @ 0.25% v/v POST (34 DAP) Gramoxone 2SL @ 12 oz/A Storm 4SL @ 16 oz/A Outlook 6EC @ 12.8 oz/A EPOST (13 DAP) Cadre 2AS @ 4 oz/A 2,4-DB 2SL @ 16 oz/A Induce @ 0.25% v/v POST (34 DAP)
  16. Cadre (4 oz/A) + 2,4-DB (16 oz/A) + ……….. (15 GPA, AIXR11002 nozzles, Applied 6:45 am) PE-11-22 June 6 6 DAT Anthem Flex (3 oz/A) + Induce (0.25%) Dual Magnum (16 oz/A) Warrant (48 oz/A) + Induce (0.25%) Outlook (12.8 oz/A)
  17. Tropical Spiderwort/Benghal Dayflower Plow (i.e. bury seed) Twin Rows Group 15’s (Dual Magnum, Warrant, Outlook, Zidua, Anthem Flex) Paraquat Cadre? Strongarm? Manage after field corn harvest.
  18. Tropical Spiderwort – 2022 Gramoxone + Storm + Group 15’s TSW-01-22 Sumter Co. EPOST: July 26 PIC: August 30 (35 DAT) Gramoxone + Storm + Dual Magnum (EPOST) Gramoxone + Storm + Outlook (EPOST) Gramoxone + Storm + Anthem Flex + Induce (EPOST) Gramoxone + Storm + Zidua + Induce (EPOST) Gramoxone + Storm + Warrant (EPOST)
  19. Herbicides for Common Cocklebur Control in Peanut PRE and/or POST Cadre Pursuit Strongarm POST Only 2,4-DB Basagran Cobra Storm Ultra Blazer
  20. Morningglory in Peanut B. Starr S. Monfort June 2022
  21. Cadre 2AS @ 4 oz/A + Zidua 4.17SC @ 2.5 oz/A + Strongarm 84WG @ 0.30 oz/A + Cobra 2EC @ 12.5 oz/A + 2,4-DB 2SL @ 16 oz/A + Induce @ 0.25% PE-13-22 June 21 4 DAT Applied: 06/17/22 51 DAP R2-R3 stage 6:55 am 15 GPA AIXR nozzles
  22. Cadre 2AS @ 4 oz/A + Zidua 4.17SC @ 2.5 oz/A + Strongarm 84WG @ 0.30 oz/A + Cobra 2EC @ 12.5 oz/A + 2,4-DB 2SL @ 16 oz/A + Induce @ 0.25% PE-13-22 June 27 10 DAT Applied: 06/17/22 51 DAP R2-R3 stage 6:55 am 15 GPA AIXR nozzles
  23. Cadre 2AS @ 4 oz/A + Zidua 4.17SC @ 2.5 oz/A + Strongarm 84WG @ 0.30 oz/A + Cobra 2EC @ 12.5 oz/A + 2,4-DB 2SL @ 16 oz/A + Induce @ 0.25% PE-13-22 Applied: 06/17/22 51 DAP R2-R3 stage 6:55 am 15 GPA AIXR nozzles 06/17/22 Before 08/02/22 47 Days After
  24. Cadre 2AS @ 4 oz/A + Zidua 4.17SC @ 2.5 oz/A + Strongarm 84WG @ 0.30 oz/A + Cobra 2EC @ 12.5 oz/A + 2,4-DB 2SL @ 16 oz/A + Induce @ 0.25% PE-13-22 Applied: 06/17/22 51 DAP R2-R3 stage 6:55 am 15 GPA AIXR nozzles 06/17/22 Before 08/02/22 47 Days After
  25. History of Classic® Use in Peanut First registered for use in 1988 DuPont-Corteva-AMVAC Late-season control of Florida beggarweed 60 DAE until 45 DBH Peanut Response TSWV height/chlorosis cultivar tolerance Southern Runner GA-06G Tifguard
  26. UGA Current Classic®/Cultivar Use Recommendations NO GA-06G Tifguard YES Florida-07 GA Greener GA-07W GA-09B GA-20VHO GA-18RU AUNPL-17 TIFNV HIGH O/L FLORUN 331 GA-12Y 65 or 75 DAP – OK 94 DAP – 8% yield loss Only 1 year of data GA-16HO
  27. Future Products Brake 1.2SL SePRO fluridone WSSA/HRAC Group 12 PRE 2023? Vulcarus 4.17SL BASF trifludimoxazin WSSA/HRAC Group14 PRE 2025??
  28. Peanut Weed Control – 2022 Valor + Strongarm vs. Brake + Strongarm PE-04-22 July 6 70 DAP Rep 2 NTC Prowl H20 3.8SC @ 32 oz/A Valor EZ 4SC @ 3 oz/A Strongarm 84WG @ 0.225 oz/A PRE (1 DAP) Cadre 2AS @ 4 oz/A 2,4-DB 2SL @ 16 oz/A Dual Magnum 7.62EC @ 16 oz/A POST (27 DAP) Prowl H20 3.8SC @ 32 oz/A Brake 1.2SL @ 12 oz/A Strongarm 84WG @ 0.225 oz/A PRE (1 DAP) Cadre 2AS @ 4 oz/A 2,4-DB 2SL @ 16 oz/A Dual Magnum 7.62EC @ 16 oz/A POST (27 DAP)
  29. Peanut Weed Control – 2022 Valor + Strongarm vs. Vulcarus + Strongarm PE-07-22 July 6 70 DAP Rep 2 NTC Prowl H20 3.8SC @ 32 oz/A Valor EZ 4SC @ 3 oz/A Strongarm 84WG @ 0.225 oz/A PRE (1 DAP) Cadre 2AS @ 4 oz/A 2,4-DB 2SL @ 16 oz/A Dual Magnum 7.62EC @ 16 oz/A POST (27 DAP) Prowl H20 3.8SC @ 32 oz/A Vulcarus 4.17SC @ 1.03 oz/A Strongarm 84WG @ 0.225 oz/A PRE (1 DAP) Cadre 2AS @ 4 oz/A 2,4-DB 2SL @ 16 oz/A Dual Magnum 7.62EC @ 16 oz/A POST (27 DAP)
  30. Peanut Field Surrounded by Pine Trees - Bulloch Co. (August 2020)
  31. Arsenal/Peanut Injury
  32. Arsenal/Peanut Yield (2020-2022) Arsenal® Powerline™ 2SL 1X = 24 oz/A
  33. Cadre (imazapic/AC-263,222) vs. Pursuit (imazethapyr) vs. Arsenal (imazapyr) Structurally not that different but…….. Source: The Imidazolinone Herbicides, Shaner and O’Connor, 1991 (Cadre) (Pursuit) (Arsenal)
  34. Garlon/Peanut/Injury
  35. Garlon/Peanut Yield (2020-2022) Garlon® 3AS 1X = 32 oz/A
  36. What do the top Georgia peanut growers do? 2022 Georgia Peanut Achievement Club Winners (2021 Crop) 15 growers 110 to 1443 acres (range) 6059 lb/A average yield 5289-6814 lbs/A (range) GA State Avg. = 4450 lb/A 87% - irrigated 67% - bottom plow 93% - twin rows Herbicides 80% - Sonalan 100% - Valor 53% - Dual 80% - Cadre 73% - 2,4-DB 27% - Prowl 33% - Strongarm
  37. Questions/Comments