1. Herbicide Resistant Corn Hybrid Research in Georgia - 2001 Eric P. Prostko William K. Vencill R. Dewey Lee Dept. Crop & Soil Sciences University of Georgia

2. Herbicide Resistant Crops - US (Not Including Stacked Varieties) Source: NASS/USDA

3. Research in 2001 u hybrid performance * Tifton (2 tests) * Athens u application timing * Grady Co. * Seminole Co.

4. Research in 2001 u hybrid performance * Tifton * Athens u application timing * Grady Co. * Seminole Co.

5. Herbicide Resistant Corn Hybrid Performance - 2001 (LSD 0.05 = NS)

6. Roundup Ready Corn Hybrid Performance - 2001 (LSD 0.05 = 15)(LSD 0.10 = 22)

7. Roundup Ready Corn Hybrid Performance - 2001 Ponder Farm abc ef c-fb-e def ab bcd

8. Liberty Link Corn Hybrid Performance - 2001 (LSD 0.05 = 15)(LSD 0.10 = 22)

9. Clearfield Corn Hybrid Performance - 2001 (LSD 0.05 = 15)(LSD 0.10 = 22)

10. Research in 2001 u hybrid performance * Tifton * Athens u application timing * Grady Co. * Seminole Co.

11. Corn Yield Response to Liberty Application Timings, 2001. Grady County - NK83-Z8 Liberty @ 28 ozs/A + AMS @ 3 lb/A c abcbc aa abc c bc P = 0.10

12. Corn Yield Response to Roundup Ultra Application Timings, 2001. Seminole County - DK622RR Roundup Ultra @ 26 ozs/A + AMS @ 3 lb/A cd bcd abc ab a abc d bcd P = 0.10

13. Summary u Better hybrids are available. * DK 662RR * NK 83Z8LL * G8222-IT u Apply Liberty @ 3-4 WAP u Apply glyphosate @ 3-4 WAP u Tank-mix with atrazine * Liberty ATZ or ReadyMaster ATZ

14. University of Georgia Extension Weed Science (gaweed.com)