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2014: Fine Tuning The Fumigant System

2014: Fine Tuning The Fumigant System. Stanley Culpepper, University of Georgia Tifton Campus. UGA 3-WAY Paladin Pic Trifecta Pic Chlor 60. Potential MB Fumigant Alternatives. 1 or 2 Crops. Production Goal. 3 to 6 Crops. FUMIGANT OPTIONS. FUMIGANT OPTIONS.

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2014: Fine Tuning The Fumigant System

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  1. 2014: Fine Tuning The Fumigant System Stanley Culpepper, University of Georgia Tifton Campus

  2. UGA 3-WAY • Paladin Pic • Trifecta • Pic Chlor 60 Potential MB Fumigant Alternatives

  3. 1 or 2 Crops Production Goal 3 to 6 Crops FUMIGANT OPTIONS FUMIGANT OPTIONS

  4. Fumigant Research 2013 and 2014 Distance between sites: 67 miles

  5. UGA 3-WAY • Paladin Pic • Trifecta • Pic Chlor 60 Potential MB Fumigant Alternatives

  6. Applicators used to inject metam 4” deep and 4” apart in the final bed UGA 3-WAY Telone/Pic/Metam Ideal Placement More Common Metam = 4 in. (75 G) Chloropicrin = 8 in. (150 lb) Telone II = 12 in. (12 G) Metam = 4 in. (75 G) Pic Chlor 60 = 8 in. (21 G)

  7. Nutsedge response to the 3-WAY. Tift Co., 2013. 99 a 91 b 89 b % 494 plant/A 464 plant/A 160 plant/A LDPE VIF TIF Plots were 1 bed by 150 feet. Fall soil temp 84. (Veg 43-13) 82,460 plant/A check

  8. Nutsedge response to the 3-WAY. Echols Co., 2013. 97 a 85 b 65 c % 37,265 plant/A 6960 plant/A 290 plant/A LDPE VIF TIF Plots were 1 bed by 150 feet. Spring soil temp 64. (Veg 13-13) 319,250 plant/A check

  9. UGA 3-WAY. Fall 2013. Tift Co. Check 3-WAY; LDPE

  10. UGA 3-WAY. Fall 2013. Tift Co. 3-WAY; TIF Check

  11. Rates Driven By Nutsedge Populations GA/FL Line (sands) Light to Severe: UGA 3-WAY TIF UGA 3-WAY Herbicide NOT Required (would still suggest Dual Topical for pepper)

  12. Rates Driven By Nutsedge Populations SPRING: South GA (loamy sands) Light to Moderate: 3-WAY LDPE Severe: 3-WAY TIF UGA 3-WAY FALL: South GA (loamy sands) Light : 3-WAY LDPE Moderate to Severe: 3-WAY TIF Herbicide NOT Required (would still suggest Dual Topical)

  13. UGA 3-WAY • Paladin Pic • Trifecta • Pic Chlor 60 Pic Chlor 60

  14. Nutsedge response to the Pic Chlor 60. Tift Co., 2013. 95 a 83 b 82 b 61 b % 23,925 plant/A 9425 plant/A 11,890 plant/A 1740 plant/A 21 GPA 28 GPA 21 GPA 28 GPA VIF TIF Plots were 1 bed by 150 feet. Spring soil temp 58F. (Veg 14-13) 36,685 plant/A check

  15. Nutsedge response to the Pic Chlor 60. Echols Co., 2013. 84 a % 18 b 248,820 plant/A 29,870 plant/A 28 GPA VIF 28 GPA TIF Plots were 1 bed by 150 feet. Spring soil temp 64. (Veg 13-13) 319,250 plant/A check

  16. Rates Driven By Nutsedge Light to Moderate: 28 G (340 lb) TIF Moderate to Severe: 28 GPA TIF Pic Chlor 60 Herbicide System Required

  17. Palmer Amaranth Control With Pic Chlor 60. Tift Co., 2013. No Herbicide Plus Dual Mag 12 oz/A

  18. Nutsedge response to the fumigants. Echols Co., 2013. 97a 95 a 84 b % 6380 plant/A 290 plant/A 308 plant/A PIC CHLOR 60 TIF UGA 3-WAY TIF MB 67:33 240 LB TIF Plots were 1 bed by 150 feet. Spring soil temp 64. (Veg 13-13) 319,250 plant/A check

  19. Potential MB Fumigant Alternatives • UGA 3-WAY • Paladin Pic • Trifecta • Pic Chlor 60

  20. Rates Driven By Nutsedge Paladin Pic Light to Moderate: 40-45 GPA TIF Moderate to Severe: 50 GPA TIF Herbicide System Required

  21. Light Populations: 40 GPA TIF Moderate to Severe: 50 GPA TIF BE CAREFUL FOR ODOR MANAGEMENT Paladin Pic Herbicide System Required

  22. Trifecta • UGA 3-WAY • Paladin Pic • Trifecta • Pic Chlor 60

  23. Rates Driven By Nutsedge Populations Trifecta Light to Moderate: 350-375 LB/A TIF Moderate to Severe: 375-400 LB/A TIF Herbicide System Required

  24. Light Populations: 40 GPA TIF Moderate to Severe: 50 GPA TIF BE CAREFUL FOR ODOR MANAGEMENT Trifecta Herbicide System Required

  25. 2015 OPTIONS INCREASE …..I THINK

  26. Systems for 2015. Tift Co., 2013. 99.9 a 99.9 a 94ab 85 b 72 c % 1470 P/A 380 P/A 83 P/A 40 P/A 35 P/A System A Paladin Pic 40 G Trifecta 350 lb 3-WAY TIF System B Plots were 1 bed by 150 feet. Spring soil temp 64. (Veg 42-13) 32,318 plant/A check

  27. System A Check

  28. BENEFITS: Outstanding pest control. Equal cost or slightly lower??? Reduced buffer restrictions. Far more consistent. No herbicide under mulch. Lower odor concerns. New Systems Potential

  29. NEGATIVES: 2 or 3 fumigants; 2 application points Shank inject 4 inches on bed top Slower application than Trifecta, Pic Chlor Plant back interval longer New Systems Potential

  30. 2014 Fumigant System Effectiveness 1. UGA 3-WAY TIF 2. Paladin Pic >= Trifecta TIF 3. 3-WAY (Spring) LDPE (not GA/FL line) 4. Pic Chlor 60 at 28 GPA TIF

  31. 2014 Fumigant System Effectiveness 1. UGA 3-WAY TIF 2. Paladin Pic >= Trifecta TIF 3. 3-WAY (Spring) LDPE (not GA/FL line) 4. Pic Chlor 60 at 28 GPA TIF

  32. 1. System A 2. System B 3. System C 4. UGA 3-WAY TIF 5. Paladin Pic >= Trifecta TIF 6. 3-WAY (Spring) LDPE (not GA/FL line) 7. Pic Chlor 60 at 28 GPA TIF 2015 Fumigant System Effectiveness

  33. 1. System A 2. System B 3. System C 4. UGA 3-WAY TIF 5. Paladin Pic >= Trifecta TIF 6. 3-WAY (Spring) LDPE (not GA/FL line) 7. Pic Chlor 60 at 28 GPA TIF COST VS CONTROL?? 2015 Fumigant System Effectiveness

  34. PESTCONTROL PLANT BACK Fumigant Plant Back Intervals

  35. 1. FUMIGANT RATE Factors Influencing Rate/Control 1. Higher populations of nutsedge 2. Warmer soil temperatures 3. Low moisture conditions (not wet either) 4. Soft bed (compaction)—double press?? 5. Lighter texture the soil

  36. 1. FUMIGANT RATE Factors Influencing Rate/Control 1. Higher populations of nutsedge 2. Warmer soil temperatures 3. Low moisture conditions (not wet either) 4. Soft bed (compaction) 5. Lighter texture the soil INFLUENCE CONCENTRATION OVER TIME

  37. We can influence quite quickly if willing!!!! 1. FUMIGANT RATE Factors Influencing Rate/Control 1. Higher populations of nutsedge 2. Warmer soil temperatures 3. Low moisture conditions (not wet either) 4. Soft bed (compaction) 5. Lighter texture the soil

  38. Managing Nutsedge YEAR ROUND 1. Row middles with Sandea 2. Spray as soon as crop done:

  39. Roundup 2 qt/A fb 2 qt/A 10 days later! Then treat as needed.

  40. Amount of Sandea remaining on plastic mulch. TyTy GA, 2005. percent days Grey, Culpepper

  41. Managing Nutsedge YEAR ROUND 1. Row middles with Sandea 2. Spray as soon as crop done: 3. When mulch is out of field:

  42. ROTATE DISKING WITH ROUNDUP AND 1 QT 3WK AFTER NUTSEDGE EMERGENCE ADD SANDEA IN WITH ROUNDUP ONCE IF NOT CARRYOVER PROBLEMS

  43. Questions or Comments? Continued Thanks: William UpChurch and Perry Fuller

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