Slide Presentation

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

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TABLE OF CONTENTS
  1. Evaluation of A New TwinJet Nozzle for Weed Control in Peanut
  2. Peanut and Cotton In Georgia
  3. New Technologies
  4. Spray Tip Classification by Droplet Size
  5. Research Questions?
  6. 2016 Nozzle Research
  7. The New Norm
  8. Materials and Methods
  9. 2017 Nozzle Test - Miller Co.
  10. Miller County - April 10, 2017
  11. Miller County Nozzle Test - 2017
  12. Coverage/Droplet Size as Influenced by Nozzle Type
  13. Coverage and Droplet Size as Influenced by Nozzle Type
  14. Droplet Size Comparison
  15. Grower and County Extension Agent (CEA) Farm-Scale Observations with TTI60 Nozzle
  16. Small Plot Study - 2017
  17. Materials and Methods Non-Crop Study - 2017
  18. 2017 Small Plot Nozzle Test (DG11002, TTI60-11002, TADF02-D)
  19. Results - 14 DAT
  20. Nozzle Type and Herbicide Treatment Effects on Palmer Amaranth Control (14 DAT)
  21. Nozzle Type and Herbicide Treatment Effects on Annual Grass Control (14 DAT)
  22. Gramoxone + Storm + Dual Magnum - 14 DAT
  23. Summary
  24. Future Yield Data
  25. Questions/Comments?



SLIDE CONTENTS
  1. Evaluation of A New TwinJet Nozzle for Weed Control in Peanut Eric P. Prostko1, Brock A. Ward1, Glenn C. Rains3,O. Wen Carter2 1Department of Crop & Soil Sciences 2Miller County Extension Agent 3Department of Entomology
  2. Peanut and Cotton In Georgia 825,000 acres harvested in 2017 46% of US Total (#1) 1,270,000 acres harvested in 2017 11% of US Total (#2) Source: USDA/NASS, Crop Production (01/12/2018)
  3. New Technologies 2,4-D and dicamba resistant crops Cotton 2017 (GA): Xtend (65%) Enlist (2%) Application Requirements Nozzle Requirements
  4. Spray Tip Classification by Droplet Size 1Estimated from sample reference graph in ASBAE/ANSI/ASAE Standard S572.1 2VMD = Volume median diameter
  5. Research Questions? Can coarse droplet producing nozzles be used for weed control in peanut? acifluorfen, bentazon, lactofen, paraquat UGA small plot research has been very positive but what about on-farm?
  6. 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
  7. The New Norm
  8. Materials and Methods April 10, 2017 Miller County Kim Henley Farm JD R4030 110 boom 20 nozzle spacing Tractor Speed 9.8 MPH Boom Height 36 15 GPA (water + dye) XRC-11005VP + TTI60-11005VP spray tips 40 PSI 66 nozzles 3 reps 10 kromekote cards (2 X 3)/rep 10 X 10 apart Dropletscan (WRK of Arkansas, LLC) Kim Henley
  9. 2017 Nozzle Test Miller Co. XRC-11005 TTI60-11005
  10. Miller County April 10, 2017
  11. Miller County Nozzle Test - 2017 North R1 R2 R3 10 feet 10 feet 4-6 MPH (SE to NW wind) tractor
  12. Coverage/Droplet Size as Influenced by Nozzle Type JD R4030, 9.8 MPH, 40 PSI, 15 GPA, 20 spacing, 36 boom height, 110 boom XRC-11005 TTI60-11005 NZ-01-17 April 10, 2017 Miller County
  13. Coverage and Droplet Size as Influenced by Nozzle Type JD R4030, 9.8 MPH, 40 PSI, 15 GPA, 20 spacing, 36 boom height, 110 boom NZ-01-17 April 10, 2017 Miller County **Average of 30 Kromekote Cards
  14. Droplet Size Comparison
  15. Grower and County Extension Agent (CEA) Farm-Scale Observations with TTI60 Nozzle 105 acre peanut field planted on 5/22/2017 All peanut herbicides, except Valor, were applied by grower with JD-R4030 sprayer using either the XRC-11005VP or TTI60-11005VP nozzle tips. Prowl (5/21/2017) Cadre + Dual Magnum + Bravo (6/15/2017) General Comments/Observations: Grower and CEA were very pleased with performance. Would like to be able to use TTI60 for everything? 6179 lb/A peanut yield (4380 lb/A state average)
  16. Small Plot Study - 2017
  17. Materials and Methods Non-Crop Study - 2017 Ponder Research Farm Ty Ty, GA 3 X 4 factorial in RCB design 3 nozzle types: DG11002, TTI60-11002, TADF02-D 4 herbicide treatments: 1. Gramoxone (12 oz) + Storm (16 oz) + Dual Magnum (16 oz) 2. Cadre (4 oz) + 2,4-DB (18 oz) + Dual Magnum (16 oz) 3. Cobra (12.5 oz) + 2,4-DB (18 oz) + Dual Magnum (16 oz) 4. Arrow (8 oz) + COC (1% v/v) 4 replications Application equipment: CO2-powered backpack sprayer, 15 GPA, 38 PSI, 3.5 MPH, 20 spacing, 20 boom height, 7:30 AM.
  18. 2017 Small Plot Nozzle Test (DG11002, TTI60-11002, TADF02-D)
  19. Results 14 DAT No interactions between nozzle type and treatment were observed (P > 0.25). Only main effects are presented.
  20. Nozzle Type and Herbicide Treatment Effects on Palmer Amaranth Control (14 DAT)
  21. Nozzle Type and Herbicide Treatment Effects on Annual Grass Control (14 DAT)
  22. Gramoxone + Storm + Dual Magnum 14 DAT DG11002 TADF02-D TTI60-11002 NTC
  23. Summary When applied with commercial sprayer (JD R4030): TTI60-11005VP better coverage and larger droplets (514 microns, XC) than XRC-11005VP (302 microns, M) Grower would like to be able to use TTI60 for every pesticide application? Entomologists and plant pathologists need to get off their tails! Small Plot Results: No interaction between nozzle type and treatment. When averaged over herbicide treatments: nozzle type had no effect on Palmer amaranth control. TADF02-D provided 4% less grass control than DG11002
  24. Future Yield Data
  25. Questions/Comments?