2014: Fine Tuning The Fumigant System Stanley Culpepper, University - - PowerPoint PPT Presentation

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2014: Fine Tuning The Fumigant System Stanley Culpepper, University - - PowerPoint PPT Presentation

May 17, 2023 39 likes •487 views

2014: Fine Tuning The Fumigant System Stanley Culpepper, University of Georgia Tifton Campus Potential MB Fumigant Alternatives 1. UGA 3-WAY 2. Paladin Pic 3. Trifecta 4. Pic Chlor 60 Production Goal FUMIGANT OPTIONS FUMIGANT OPTIONS

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SLIDE 1

2014: Fine Tuning The Fumigant System

Stanley Culpepper, University of Georgia Tifton Campus

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SLIDE 2

Potential MB Fumigant Alternatives

  • 1. UGA 3-WAY
  • 2. Paladin Pic
  • 3. Trifecta
  • 4. Pic Chlor 60
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SLIDE 3

Production Goal

FUMIGANT OPTIONS FUMIGANT OPTIONS

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SLIDE 4

Fumigant Research 2013 and 2014

Distance between sites: 67 miles

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Potential MB Fumigant Alternatives

  • 1. UGA 3-WAY
  • 2. Paladin Pic
  • 3. Trifecta
  • 4. Pic Chlor 60
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SLIDE 6

UGA 3-WAY Telone/Pic/Metam

Metam = 4 in. (75 G) Chloropicrin = 8 in. (150 lb) Telone II = 12 in. (12 G)

Ideal Placement

Metam = 4 in. (75 G) Pic Chlor 60 = 8 in. (21 G)

More Common

Applicators used to inject metam 4” deep and 4” apart in the final bed

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Nutsedge response to the 3-WAY. Tift Co., 2013.

20 40 60 80 100

Plots were 1 bed by 150 feet. Fall soil temp 84. (Veg 43-13)

LDPE VIF TIF 91 b 89 b 99 a %

160 plant/A 464 plant/A 494 plant/A

82,460 plant/A check

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SLIDE 8

Nutsedge response to the 3-WAY. Echols Co., 2013.

20 40 60 80 100

Plots were 1 bed by 150 feet. Spring soil temp 64. (Veg 13-13)

LDPE VIF TIF 85 b 65 c 97 a %

290 plant/A 6960 plant/A 37,265 plant/A

319,250 plant/A check

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3-WAY; LDPE Check

UGA 3-WAY. Fall 2013. Tift Co.

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3-WAY; TIF Check

UGA 3-WAY. Fall 2013. Tift Co.

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UGA 3-WAY

GA/FL Line (sands) Light to Severe: UGA 3-WAY TIF

Herbicide NOT Required (would still suggest Dual Topical for pepper) Rates Driven By Nutsedge Populations

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UGA 3-WAY

Herbicide NOT Required (would still suggest Dual Topical) Rates Driven By Nutsedge Populations

FALL: South GA (loamy sands) Light : 3-WAY LDPE Moderate to Severe: 3-WAY TIF SPRING: South GA (loamy sands) Light to Moderate: 3-WAY LDPE Severe: 3-WAY TIF

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SLIDE 13

Pic Chlor 60

  • 1. UGA 3-WAY
  • 2. Paladin Pic
  • 3. Trifecta
  • 4. Pic Chlor 60
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Nutsedge response to the Pic Chlor 60. Tift Co., 2013.

20 40 60 80 100

Plots were 1 bed by 150 feet. Spring soil temp 58F. (Veg 14-13)

VIF TIF 83 b 61 b 95 a %

1740 plant/A 9425 plant/A 23,925 plant/A

36,685 plant/A check

82 b

11,890 plant/A

21 GPA 28 GPA 21 GPA 28 GPA

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Nutsedge response to the Pic Chlor 60. Echols Co., 2013.

20 40 60 80 100

Plots were 1 bed by 150 feet. Spring soil temp 64. (Veg 13-13)

18 b 84 a %

29,870 plant/A 248,820 plant/A

28 GPA VIF 28 GPA TIF

319,250 plant/A check

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Pic Chlor 60

Light to Moderate: 28 G (340 lb) TIF Moderate to Severe: 28 GPA TIF

Herbicide System Required

Rates Driven By Nutsedge

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Palmer Amaranth Control With Pic Chlor 60. Tift Co., 2013.

Plus Dual Mag 12 oz/A No Herbicide

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SLIDE 18
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SLIDE 19

Nutsedge response to the fumigants. Echols Co., 2013.

20 40 60 80 100

Plots were 1 bed by 150 feet. Spring soil temp 64. (Veg 13-13)

UGA 3-WAY TIF MB 67:33 240 LB TIF

84 b 95 a

%

290 plant/A 308 plant/A

319,250 plant/A check

97 a

PIC CHLOR 60 TIF

6380 plant/A

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Potential MB Fumigant Alternatives

  • 1. UGA 3-WAY
  • 2. Paladin Pic
  • 3. Trifecta
  • 4. Pic Chlor 60
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Paladin Pic

Light to Moderate: 40-45 GPA TIF Moderate to Severe: 50 GPA TIF

Herbicide System Required Rates Driven By Nutsedge

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Paladin Pic

Light Populations: 40 GPA TIF Moderate to Severe: 50 GPA TIF

Herbicide System Required

BE CAREFUL FOR ODOR MANAGEMENT

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Trifecta

  • 1. UGA 3-WAY
  • 2. Paladin Pic
  • 3. Trifecta
  • 4. Pic Chlor 60
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SLIDE 24

Trifecta

Light to Moderate: 350-375 LB/A TIF Moderate to Severe: 375-400 LB/A TIF

Herbicide System Required

Rates Driven By Nutsedge Populations

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SLIDE 25

Trifecta

Light Populations: 40 GPA TIF Moderate to Severe: 50 GPA TIF

Herbicide System Required

BE CAREFUL FOR ODOR MANAGEMENT

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SLIDE 26

2015

OPTIONS INCREASE …..I THINK

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Systems for 2015. Tift Co., 2013.

20 40 60 80 100

Plots were 1 bed by 150 feet. Spring soil temp 64. (Veg 42-13)

Paladin Pic 40 G 3-WAY TIF System A

85 b 72 c 99.9 a

%

40 P/A 35 P/A 1470 P/A

32,318 plant/A check

94 ab

Trifecta 350 lb

83 P/A

System B

99.9 a 380 P/A

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SLIDE 28

System A Check

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New Systems Potential

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

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New Systems Potential

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

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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
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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
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SLIDE 33

2015 Fumigant System Effectiveness

  • 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
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SLIDE 34

2015 Fumigant System Effectiveness

  • 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??

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SLIDE 35

Fumigant Plant Back Intervals

P E S T C O N T R O L P L A N T B A C K

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Factors Influencing Rate/Control

F U M I G A N T R A T E 1.

  • 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
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Factors Influencing Rate/Control

F U M I G A N T R A T E 1.

  • 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

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Factors Influencing Rate/Control

F U M I G A N T R A T E 1.

  • 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

We can influence quite quickly if willing!!!!

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Managing Nutsedge YEAR ROUND

  • 1. Row middles with Sandea
  • 2. Spray as soon as crop done:
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SLIDE 40

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

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SLIDE 41

20 40 60 80 100 1 2 3 4 5 no wash washed

Amount of Sandea remaining on plastic mulch. TyTy GA, 2005.

percent days

Grey, Culpepper

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Managing Nutsedge YEAR ROUND

  • 1. Row middles with Sandea
  • 2. Spray as soon as crop done:
  • 3. When mulch is out of field:
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SLIDE 43

ROTATE DISKING WITH ROUNDUP AND 1 QT 3WK AFTER NUTSEDGE EMERGENCE

ADD SANDEA IN WITH ROUNDUP ONCE IF NOT CARRYOVER PROBLEMS

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Questions or Comments?

Continued Thanks: William UpChurch and Perry Fuller