1. Weed Control And Watermelon Tolerance To SANDEA

2. Herbicides Labeled for Watermelons 1.Gramoxone,Boa (paraquat)…..…Preplant, Row Middles 2.Roundup, others (glyphosphate)…Preplant 3.Prefar (bensulide)……………PPI or PRE 4.Curbit (ethalfluralin)…………….…PRE 5.Command (clomazone)……………PRE 6.Alanap (napthalam)………PRE or POST 7.Poast (sethoxydim)…………………POST 8.Treflan HFP (trifluralin)…..Row Middles

6. Watermelon Trials, Cordele, GA Vidalia, GA Attapulgus, GA

7. Non-treated Control Sandea (0.5 oz/A) PRE

8. Non-treated Control Sandea (0.5 oz/A) POST 2-leaf watermelon 2” Palmer Amaranth

9. non-treatedSandea 2/3 oz + Curbit 1.5 pt

10. Crop Injury??

11. Herbicide Injury Ratings Sandea… Pre 0 10 20 30 40 50 60 70 80 % Injury April 23 April 27 May 9 May 23 June 18 0.5 oz 0.75 oz 1.0 oz Check

12. Herbicide Injury Ratings Sandea… Post (1-2 Leaves) 0 10 20 30 40 50 60 70 80 % Injury May 9 May 23 May 29 June 18 0.5 oz 0.75 oz 1.0 oz Check

13. Herbicide Injury Ratings Sandea… Post (12-15” Runners) 0 10 20 30 40 50 60 70 80 % Injury May 23 May 29 June 18 0.5 oz 0.75 oz 1.0 oz Check

14. Sandea 0.75 oz Post

15. Untreated Sandea 0.75 oz/acre Post

16. Sandea 0.75 oz/acre Post Sandea 0.75 oz/acre Post

17. Sandea POST to Watermelon with 12” Runner

18. Sandea 0.75 oz/acre Late Post

19. Nontreated Sandea (0.5 oz/acre) Watermelon farm in Crisp County, May 2000. Treatment at 1-leaf. Pictures to scale.

20. Sandea (0.5 oz/A) PRE Sandea (0.5 oz/A) POST 2-leaf watermelon

21. Effects on Yield

23. Yield Data Sandea… 0.5 Oz/acre 0 50 100 150 200 250 lbs /plot Pre 1-2 leaf 12" runnersCheck July 9 July 16 July 23 Total

24. Yield Data Sandea… 0.75 Oz/acre 0 50 100 150 200 250 lbs /plot Pre 1-2 leaf 12" runnersCheck July 9 July 16 July 23 Total

25. Yield Data Sandea… 1.0 Oz/acre 0 50 100 150 200 250 lbs /plot Pre 1-2 leaf 12" runnersCheck July 9 July 16 July 23 Total

26. Melon Size Sandea…0.5 Oz/acre 0 20 40 60 80 100 120 140 160 180 200 lbs /plot Pre1-2 Leaf12" RunnersCheck < 20 lb 20-30 lb

27. Melon Size Sandea…0.75 Oz/acre 0 20 40 60 80 100 120 140 160 180 200 lbs /plot Pre1-2 Leaf12" RunnersCheck < 20 lb 20-30 lb

28. Melon Size Sandea…1.0 Oz/acre 0 20 40 60 80 100 120 140 160 180 200 lbs /plot Pre1-2 Leaf12" RunnersCheck < 20 lb 20-30 lb

29. Conclusions 1.Curbit is a useful tool in the control of nutsedge and pigweeds.

30. Conclusions 1.Curbit is a useful tool in the control of nutsedge and pigweeds. 2.Do not allow Sandea to contact foliage.

31. Conclusions 1.Curbit is a useful tool in the control of nutsedge and pigweeds. 2.Do not allow Sandea to contact foliage. 3.Sandea PRE may slightly delay maturity.

32. Conclusions 1.Curbit is a useful tool in the control of nutsedge and pigweeds. 2.Do not allow Sandea to contact foliage. 3.Sandea PRE may slightly delay maturity. 4.Need label for Sandea PRE and row middles.

33. Conclusions 1.Curbit is a useful tool in the control of nutsedge and pigweeds. 2.Do not allow Sandea to contact foliage. 3.Sandea PRE may slightly delay maturity. 4.Need label for Sandea PRE and row middles. 5.Need additional research in plasticulture systems.