MB Alternatives – Almost DONE!!!
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MB Alternatives – Almost DONE!!!
Culpepper and Sumner
University of Georgia
Tifton Campus
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Viable MB Fumigant Alternatives
1. MIDAS
2. 3-WAY
3. Paladin
Herbicides
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MIDAS
1. Application procedure similar to MB
2. MIDAS is a 50:50 or 98:2 mix with Pic
3. Use rate similar to MB
4. Reduce use rate 40% under VIF mulches.
Effective product but limited adoption because of economics.
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Telone/Pic/Vapam
Spring applications = 16 of 17 experiments over 4 years with greater than 93% nutsedge control
Vapam = 4 inches
Chloropicrin = 8 inches
Telone = 12 inches
Ideal Placement
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0 100 200 300 400 500
Northing (cm )
0
100
200
300
400
500
600
700
Eas
tin
g (
cm)
2 0
6 0
1 0 0
1 4 0
1 8 0
2 2 0
2 6 0
3 0 0
3 4 0
3 8 0
4 2 0
4 6 0
5 0 0
5 4 0
5 8 0
6 2 0
0 100 200 300 400 500
Northing (cm )
0
100
200
300
400
500
600
700
Eas
tin
g (
cm)
2 0
6 0
1 0 0
1 4 0
1 8 0
2 2 0
2 6 0
3 0 0
3 4 0
3 8 0
4 2 0
4 6 0
5 0 0
5 4 0
5 8 0
6 2 0
0 100 200 300 400 500
Northing (cm )
0
100
200
300
400
500
600
700
Eas
tin
g (
cm)
2 0
6 0
1 0 0
1 4 0
1 8 0
2 2 0
2 6 0
3 0 0
3 4 0
3 8 0
4 2 0
4 6 0
5 0 0
5 4 0
5 8 0
6 2 0
0 100 200 300 400 500
Northing (cm )
0
100
200
300
400
500
600
700
Eas
tin
g (
cm)
2 0
6 0
1 0 0
1 4 0
1 8 0
2 2 0
2 6 0
3 0 0
3 4 0
3 8 0
4 2 0
4 6 0
5 0 0
5 4 0
5 8 0
6 2 0
16 WAP 24 WAP
32 WAP 60 WAPPurple Nutsedge
Black LDPE Mulch
20 feet
25
feet136
1550
950
1550 3440
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Note moisture and compaction
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Telone II fb Vapam
LDPE mulch
V4-05, 60 DAT
Telone II fb Pic
LDPE mulch
Telone II fb Pic fb Vapam
LDPE mulch
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Percent purple nutsedge control by Pic Chlor 60 @ 21G as impacted by mulch. Ponder, Spring 2007-2008.
0
20
40
60
80
100
55 b
38 d
82 a
LDPE
1.25 mil
LDPE
1.75 milBlockade
1.25 mil
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Percent Purple Nutsedge Control by MB and 3-WAY at Pepper Harvest. Ponder, Spring 2008.
0
20
40
60
80
100
Spring
Fall
Plots were 1 bed by 50 feet. Spring soil temp 60 F; Fall soil temp 93.
87
99
70
99
MB 3-WAY
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1. Labeled …8 months from Nov 2009…..April or May I HOPE.
2. 79:21 mixture with chloropicrin
3. Same application procedures as MB
4. Excellent nutsedge control; needs help on annual grasses, pigweed, and likely other small seeded annual broadleaf weeds.
Paladin (DMDS + Pic)
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Percent yellow nutsedge control at harvest as impacted by Paladin rate. TyTy, GA 2008.*
0
20
40
60
80
100
98 a
50 G 30 G40 G
Paladin Rate
100 a
99 a
98 a
60 G
Blockade mulch
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Percent Purple Nutsedge Control by Paladin at Pepper Harvest. Ponder, Spring 2008.
0
20
40
60
80
100
Spring
Fall
99
Plots were 1 bed by 50 feet. Spring soil temp 60 F; Fall soil temp 93. Blockade mulch.
85
9993 98
99
DMDS 40 G DMDS 50 G DMDS 60 G
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Percent large crabgrass control at harvest as impacted by Paladin rate. TyTy, GA 2008.*
0
20
40
60
80
100
50 G 30 G40 G
Paladin Rate
75 a 66
b49 c
60 G
33 d
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Split application
Bell Pepper
(Plasticulture and Bareground)
PRE:
6-8 oz Dual Mag
2 to 3 lb Devrinol
Command
POST 1:
8-10 oz Dual Mag
POST 2:
Select Max as needed
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1. Labeled ????
2. 79:21 mixture with chloropicrin
3. Same application procedures as MB
4. Excellent nutsedge control; needs help on annual grasses, pigweed, and likely other small seeded annual broadleaf weeds.
5. Must use high barrier mulch
Paladin (DMDS + Pic)
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Must Use Mulch Listed on Paladin Label
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Paladin 50 G, Blockade
DMDS 70 G, LDPE
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Paladin (DMDS + Pic)
1. Labeled ????
2. 79:21 mixture with chloropicrin.
3. Same application procedures as MB.
4. Excellent nutsedge control; needs help on annual grasses, pigweed, and likely other small seeded annual broadleaf weeds.
5. Must use high barrier mulch.
6. Smell is a serious issue and must be addressed.
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1. Correct Mulch – Mulch options will be listed on label
2. Moisture must be ideal
Mitigating Smell Issues
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Start Time = 9:00 AM
Water Content(%/dry weight of soil)
679
10
LDPE White Mulch
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1. Correct Mulch – Mulch options will be listed on label
2. Moisture must be ideal
3. Compaction
Mitigating Smell Issues
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Distance from center of bolt to center of bolt on top link was either 27.5 or 28 inches
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LDPE 28”
LDPE 27.5”
15 % reduction due to increased bed compaction
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1. Odor is number 1 concern
2. Plant back:
Spring up to at least 30 days in some envir
Fall likely around 21 days
3. Cost is unknown?????????????
Paladin (DMDS + Pic)
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1. Get Paladin out with 4 or 5 growers in secluded areas this fall (15-25 acres) to determine if this is a viable alternative assuming product is economical.
Future of MB Alternative Efforts
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1. Get Paladin out with 4 or 5 growers in secluded areas this fall (15 acres or so) to determine if this is a viable alternative (assuming product is economical.
2. Summer of 2010 will be last submission of methyl bromide CUE request (if Paladin use is sustainable and economical).
Future of MB Alternative Efforts
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1. Get Paladin out with 4 or 5 growers in secluded areas this fall (15 acres or so) to determine if this is a viable alternative (assuming product is economical.
2. Summer of 2010 will be last submission of methyl bromide CUE request (if Paladin use is sustainable and economical).
3. One year from today discuss results from Paladin efforts and one additional fumigant system in development.
Future of MB Alternative Efforts
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No Fumigant, No Herbicide,
Blockade Film
Herbicide Coated Mulch
No Fumigant, No Herbicide
BIG Film