Slide Presentation

TITLE    (click title to view slides)
New Peanut Cultivar Response to Paraquat Applications

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

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TABLE OF CONTENTS
  1. New Peanut Cultivar Response to Paraquat Applications
  2. Paraquat in Peanut
  3. Treatments applied 6 DAC; Photo at 3 DAT
  4. Acreage Planted in Seed Certification Program in SE in 2013 to Produce 2014 Seed Supply
  5. Materials and Methods - I
  6. Materials and Methods - II Stages of Growth
  7. Results
  8. Peanut Cultivar Response to Gramoxone Application Timings - 2013
  9. Peanut Cultivar Response to Gramoxone Treatments - 2013
  10. GA-06 Response to Gramoxone Treatments - 2013
  11. Is there a better way to evaluate yield response?
  12. A Comparison of Irrigated Weed-Free Peanut Yields Between NTC and Gramoxone + Storm + Dual Magnum
  13. NTC Peanut Yield Variability (lb/A)
  14. Summary/Conclusions
  15. Questions?



SLIDE CONTENTS
  1. New Peanut Cultivar Response to Paraquat Applications Eric P. Prostko, Ph.D. Professor and Extension Weed Specialist Department of Crop & Soil Sciences
  2. Paraquat in Peanut Labeled in 1988 Replacement for dinoseb significant foliar injury Cultivars changing all the time
  3. Treatments applied 6 DAC; Photo at 3 DAT GA-02C GI @ 8 oz/A + NIS @ 0.25% v/v GI @ 12 oz/A + Basagran @ 8 oz/A + NIS @ 0.25% v/v
  4. Acreage Planted in Seed Certification Program in SE in 2013 to Produce 2014 Seed Supply
  5. Materials and Methods - I Tests 1 and 2 GA-06B, GA-09B 3 timings (15, 22, 31 DAP) Gramoxone, Gramoxone + Storm, Gramoxone + Storm + Dual Magnum Tifton Tests 3 and 4 GA-06G Tifton, Attapulgus Gramoxone, Storm, Dual Magnum, Cadre Small-plots 4 replications weed-free irrigated
  6. Materials and Methods - II Stages of Growth
  7. Results
  8. Peanut Cultivar Response to Gramoxone Application Timings - 2013 Tests 1 & 2 PE-02-13 PE-02B-13 Averaged over 4 herbicide treatments. UGA Ponder Farm (Tifton)
  9. Peanut Cultivar Response to Gramoxone Treatments - 2013 Tests 1& 2 PE-02-13 PE-02B-13 Averaged over 3 application timings (15, 22, and 31 DAP). UGA Ponder Farm (Tifton)
  10. GA-06 Response to Gramoxone Treatments - 2013 Tests 3 & 4 PE-12-13 PE-13-13
  11. Is there a better way to evaluate yield response? Frequently herbicide tolerance trials are NS Large LSD values?
  12. A Comparison of Irrigated Weed-Free Peanut Yields Between NTC and Gramoxone (12 oz/A) + Storm (16 oz/A) + Dual Magnum (16-21 oz/A) Treatments in Georgia, 2011-2013. NTC (lbs/A) G + S + DM (lbs/A) PEA01-11 (GA-06G) PEA01-12 (GA-06G) PE-20-11 (GA-06G) PE-01-12 (GA-06G) PE-17-12 (GA-06G) PE-02-13 (GA-06G) PE-02B-13 (GA-09B) PE-12-13 (GA-06G) PE-13-13 (GA-06G) n = 50 6000 = 5801 (97%) 7000 = 6590 (94%)
  13. NTC Peanut Yield Variability (lb/A)
  14. Summary/Conclusions Leaf burn and crop stunting were observed Peanut yields were not reduced by any herbicide treatment New cultivars (GA-06G, GA-09B) are tolerant to common paraquat treatments. Dryland vs. Irrigated????
  15. Questions? eprostko@uga.edu www.ugaweed.com