Pumpkin Herbicide Trials, R. Allen Straw Area Specialist Virginia Cooperative Extension

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1 Pumpkin Herbicide Trials, 211 R. Allen Straw Area Specialist Virginia Cooperative Extension

2 Locations in 211 Montgomery County NT Drip Irrigation Variety Magic Wand Allegheny County, NC NT No Irrigation Variety Aladdin Chowan County, NC NT Center Pivot Irrigation Variety Hijinks Washington County CT No Irrigation Variety Spartan

3 Herbicide Treatments, UTC 2. Dual 1.5 pints/a 3. Dual 1.5 pints/a plus 1.5 pints/a 4. Dual 1.5 pints/a plus 2 pints/a 5. Dual 1.5 pints/a plus 3 pints/a

4 Herbicide Treatments, Dual 1 pints/a plus Command 1 pint/a plus 1.5 pints/a 7. Dual 1 pints/a plus Command 1 pint/a plus 2 pints/a 8. Dual 1 pints/a plus Command 1 pint/a plus 2/3 oz/a 9. Command 1 pint/a plus 3 pints/a 1.Command 21 fl oz/a plus 4 pints/a

5 Plant Stand no./a Montgomery County

6 Yield no./a Montgomery County

7 Yield tons/a Montgomery County

8 Average Fruit Weight lb/fruit Montgomery County

9 Immature Fruit % Montgomery County

10 Plant Stand no./a Allegheny County, NC

11 Yield no./a Allegheny County, NC

12 Yield tons/a Allegheny County, NC

13 Average Fruit Weight lb/fruit Allegheny County, NC

14 Immature Fruit % Allegheny County, NC

15 Overall Weed Control % Allegheny County, NC

16 Additional Treatments in Chowan County pints/a plus Command 1 pint/a pints/a plus Command 21 fl oz/a

17 Plant Stand no./a Chowan County, NC

18 Yield no./a Chowan County, NC

19 Yield tons/a Chowan County, NC

20 Average Fruit Weight lb/fruit Chowan County, NC

21 Immature Fruit % Chowan County, NC

22 Overall Weed Control % Chowan County, NC

23 Locations in 213 Montgomery County NT Variety Apollo Did not get yield Already windrowed part of the plot area. No stand differences among treatments Essentially 1% weed control from all treatments Some late season ground cherry. Chowan County, NC NT Variety Rep 1 Rep 2 Rep 3 Rep 4 Apollo Cronus Field Trip Magic Wand

24 Herbicide Treatments, UTC 2. Dual 1.5 pints/a 3. Dual 1.5 pints/a plus 1.5 pints/a 4. Dual 1.5 pints/a plus 2 pints/a 5. Dual 1.5 pints/a plus 3 pints/a

25 Herbicide Treatments, Dual 1 pints/a plus Command 1 pint/a plus 1.5 pints/a 7. Dual 1 pints/a plus Command 1 pint/a plus 2 pints/a 8. Dual 1 pints/a plus Command 1 pint/a plus 2/3 oz/a 9. Command 21 fl oz/a plus 4 pints/a

26 Plant Stand no./a Chowan County, NC

27 Yield no./a Chowan County, NC

28 Yield tons/a Chowan County, NC

29 Average Fruit Weight lb/fruit Chowan County, NC

30 Immature Fruit % Chowan County, NC

31 Overall Weed Control % Chowan County, NC

32 Conclusions 1.5 and 2 pints/a appears to relatively safe. 3 pints/a appears to cause some yield reduction. The three way combinations provided excellent weed control. Alachlor appears to be relatively safe and gave very good weed control.

33 Reflex Received Federal Tolerance this past year. Should be labeled for this use season. Not sure on rate Not sure on how this label will be managed May be an indemnified label

34 Postemergence Trial, 213 Even with our best herbicide treatments we are always going to have some escapes. Postemergence Products Sandea Poast Select Max Generics Over the past couple of years we have toyed with the idea of Basagran. Grower friend in MS that had tried it a couple of years ago with good success. So we tried in 213.

35 Basagran Trial, UTC 2. 1 pint/a plus ¼% v/v pints/a plus ¼% v/v 4. 2 pints/a plus ¼% v/v 5. 1 pint/a plus 1% v/v pints/a plus 1% v/v 7. 2 pints/a plus 1% v/v

36 Basagran % Injury Results, Injury ratings taken 7 days after treatment

37 Basagran Results, 213 Crop oil concentrate caused more injury than non-ionic surfactant. By 21 days, almost no injury was observed. No differences in yields among treatments. Appears to be fine on Jack-O-Lanterns. Do not use on C. Maxima Prize Winner Remember Basagran is not labeled for Pumpkins.

38 Questions? R. Allen Straw Mobile:

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