2014: fine tuning the fumigant system
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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
3 to 6 Crops1
or 2
Cro
ps
FUMIGANT OPTIONS FUMIGANT OPTIONS
Fumigant Research 2013 and Fumigant Research 2013 and 20142014
Distance between sites: 67 miles
Potential MB Fumigant Alternatives
1. UGA 3-WAY
2. Paladin Pic
3. Trifecta
4. Pic Chlor 60
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
Nutsedge response to the 3-WAY. Tift Co., 2013.
0
20
40
60
80
100
Plots were 1 bed by 150 feet. Fall soil temp 84. (Veg 43-13)
LDPE VIF TIF
91 b89 b99 a
%
160 plant/A464 plant/A494 plant/A
82,460 plant/A check
Nutsedge response to the 3-WAY. Echols Co., 2013.
0
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/A6960 plant/A37,265 plant/A
319,250 plant/A check
3-WAY; LDPECheck
UGA 3-WAY. Fall 2013. Tift Co.
3-WAY; TIF Check
UGA 3-WAY. Fall 2013. Tift Co.
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
UGA 3-WAY
Herbicide NOT Required
(would still suggest Dual Topical)
Rates Driven By Nutsedge Populations
FALL: South GA (loamy sands)Light : 3-WAY LDPEModerate to Severe: 3-WAY TIF
SPRING: South GA (loamy sands)Light to Moderate: 3-WAY LDPESevere: 3-WAY TIF
Pic Chlor 60
1. UGA 3-WAY
2. Paladin Pic
3. Trifecta
4. Pic Chlor 60
Nutsedge response to the Pic Chlor 60. Tift Co., 2013.
0
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/A9425 plant/A23,925 plant/A
36,685 plant/A check
82 b
11,890 plant/A
21 GPA 28 GPA 21 GPA 28 GPA
Nutsedge response to the Pic Chlor 60. Echols Co., 2013.
0
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/A248,820 plant/A
28 GPAVIF
28 GPATIF
319,250 plant/A check
Pic Chlor 60
Light to Moderate: 28 G (340 lb) TIF
Moderate to Severe: 28 GPA TIF
Herbicide System Required
Rates Driven By Nutsedge
Palmer Amaranth Control With Pic Chlor 60. Tift Co., 2013.
Plus Dual Mag 12 oz/ANo Herbicide
Nutsedge response to the fumigants. Echols Co., 2013.
0
20
40
60
80
100
Plots were 1 bed by 150 feet. Spring soil temp 64. (Veg 13-13)
UGA 3-WAYTIF
MB 67:33240 LB
TIF
84 b
95 a
%
290 plant/A 308 plant/A
319,250 plant/A check
97a
PIC CHLOR 60TIF
6380 plant/A
Potential MB Fumigant Alternatives
1. UGA 3-WAY
2. Paladin Pic
3. Trifecta
4. Pic Chlor 60
Paladin Pic
Light to Moderate: 40-45 GPA TIF
Moderate to Severe: 50 GPA TIF
Herbicide System Required
Rates Driven By Nutsedge
Paladin Pic
Light Populations:
40 GPA TIF
Moderate to Severe:
50 GPA TIF
Herbicide System Required
BE CAREFUL FOR ODOR MANAGEMENT
Trifecta
1. UGA 3-WAY
2. Paladin Pic
3. Trifecta
4. Pic Chlor 60
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
Trifecta
Light Populations:
40 GPA TIF
Moderate to Severe:
50 GPA TIF
Herbicide System Required
BE CAREFUL FOR ODOR MANAGEMENT
2015
OPTIONS INCREASE …..I THINK
Systems for 2015. Tift Co., 2013.
0
20
40
60
80
100
Plots were 1 bed by 150 feet. Spring soil temp 64. (Veg 42-13)
Paladin Pic40 G
3-WAYTIF
System A
85 b72 c
99.9 a
%
40 P/A 35 P/A1470 P/A
32,318 plant/A check
94ab
Trifecta350 lb
83 P/A
System B
99.9 a
380 P/A
System A Check
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.
New Systems Potential
NEGATIVES:2 or 3 fumigants; 2 application pointsShank inject 4 inches on bed top Slower application than Trifecta, Pic ChlorPlant back interval longer
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
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
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
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??
Fumigant Plant Back Intervals
PEST
CONTROL
PLANT
BACK
Factors Influencing Rate/Control
FUMIGANT
RATE
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
Factors Influencing Rate/Control
FUMIGANT
RATE
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 soilINFLUENCE CONCENTRATION OVER TIME
Factors Influencing Rate/Control
FUMIGANT
RATE
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!!!!
Managing Nutsedge YEAR ROUND
1. Row middles with Sandea
2. Spray as soon as crop done:
Roundup 2 qt/A fb 2 qt/A 10 days later! Then treat as needed.
0
20
40
60
80
100
1 2 3 4 5
no wash
washed
Amount of Sandea remaining on plastic mulch. TyTy GA, 2005.
per
cen
t
days Grey, Culpepper
Managing Nutsedge YEAR ROUND
1. Row middles with Sandea
2. Spray as soon as crop done:
3. When mulch is out of field:
ROTATE DISKING WITH ROUNDUP AND 1 QT 3WK AFTER NUTSEDGE EMERGENCE
ADD SANDEA IN WITH ROUNDUP ONCE IF NOT CARRYOVER PROBLEMS
Questions or Comments?
Continued Thanks: William UpChurch and Perry Fuller
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