Slide Presentation

TITLE    (click title to view slides)
Herbicide Resistant Corn Hybrid Performance in Georgia

AUTHOR
Dr. Eric P. Prostko
Dr. E. Ford Eastin
Dr. William K. Vencill
Dr. R. D. Lee

Crop and Soil Sciences
University of Georgia

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TABLE OF CONTENTS
  1. Herbicide Resistant Corn Hybrid Performance in Georgia
  2. Herbicide-Resistant Crops. The problem...
  3. Herbicide Resistant Crops - US 2000
  4. Herbicide Resistant Corn Hybrids. What’s Available??
  5. Clearfield Corn (IR vs. IT). What’s the difference?
  6. Herbicide-Resistant Crops. What do producers want/need to know??
  7. Herbicide Resistant Corn Hybrid Tests - 2000
  8. Results
  9. Clearfield Corn Hybrid Performance in Georgia - 2000
  10. Roundup Ready Corn Hybrid Performance in Georgia - 2000
  11. Liberty Link Corn Hybrid Performance in Georgia - 2000
  12. Herbicide Resistant Corn Hybrids in Georgia - 2000
  13. Herbicide Resistant Corn Hybrid Technologies
  14. The use of herbicide resistant corn hybrid technologies should be based upon...
  15. University of Georgia Weed Science



SLIDE CONTENTS
  1. Herbicide Resistant Corn Hybrid Performance in Georgia E. P. Prostko, E. F. Eastin, W. K. Vencill, and R. D. Lee University of Georgia Dept. Crop & Soil Sciences
  2. Herbicide-Resistant Crops The problem ….. OR Will anyone buy them????
  3. Herbicide Resistant Crops - US 2000 Source: NASS, June 2000
  4. Herbicide Resistant Corn Hybrids What’s Available?? Roundup Ready Liberty Link Clearfield Corn** * IR or IT ** Not a GMO
  5. Clearfield Corn (IR vs. IT) What’s the difference? IR Hybrids (IMI-Resistant) * both parents carry resistance to IMI’s * cross-resistant to SU’s (OP interactions, recrop) * harder/slower to develop IT Hybrids (IMI-Tolerant) * only 1 parent has resistance to IMI’s * easier/faster to develop
  6. Herbicide-Resistant Crops What do producers want/need to know?? weeds controlled cost/A yield potential yield drag??
  7. Herbicide Resistant Corn Hybrid Tests - 2000 3 locations small plots CN, RR, LL, Clearfield hybrids treated/untreated 8” tall corn grain yield
  8. Results no statistical differences in yield no yield loss associated with herbicide application
  9. Clearfield Corn Hybrid Performance in Georgia - 2000 *Treated with Lightning (1.28 oz/A) + Atrazine (1.5 pt/A) + AMS (2.5 lbs/A) + COC (1% v/v)
  10. Roundup Ready Corn Hybrid Performance in Georgia - 2000 *Treated with Roundup Ultra (1 qt/A)
  11. Liberty Link Corn Hybrid Performance in Georgia - 2000 *Treated with Liberty (28 ozs/A) + AMS (2.5 lbs/A)
  12. Herbicide Resistant Corn Hybrids in Georgia - 2000 hybrids that performed equal to or better than the test averages included the following: * Pioneer 32K63LL (Liberty) * Garst 8222IT (Clearfield) * Dekalb 626RR (Roundup) Need more data!!!!!
  13. Herbicide Resistant Corn Hybrid Technologies Cost/A Cost/A for 1 application
  14. The use of herbicide resistant corn hybrid technologies should be based upon ……………... marketability weed control problems consistent hybrid performance and other agronomic traits reduced or equal control costs
  15. PPT Slide University of Georgia Extension Weed Science (gaweed.com)