2006: MB Alternatives Being Developed in GA

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2006 MB Alternatives Being Developed in GA
University of Georgia Tifton Campus
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Methyl Bromide Critical Use Exemption
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Methyl Bromide Critical Use Exemption
PRICE OF BROMIDE!
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Loss of Methyl Bromide
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OBJECTIVE

• Develop and implement economical fumigant
  alternatives to MB

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Telone II fb Chloropicrin fb Vapam
2006
2004
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Viable MB Fumigant Alternatives

• MIDAS (methyl iodide plus chloropicrin)
• DMDS (dimethyl disulfide plus chloropicrin)
• Trade Name will be Accolade
• Telone II fb chloropicrin fb Vapam

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MB Alternatives Research on LDPE

• MIDAS (5050 at 350 lb/A broadcast)
• DMDS (7921 at 74 G/A broadcast)
• Telone II (12G) fb chloropicrin (150 lb) fb Vapam
  (75 G)
• MB (6733 at 350 lb/A broadcast)
• None

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Culpeppers Cost of Fumigant and Mulch Per Acre
of Land (32 bedtop, 5 ft center)
HUGE ASSUMPTION MB 6733 is 3.75/lb.
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Telone II fb Chloropicrin fb Vapam
2006
2004
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MIDAS, Bromide, Pic and DMDS
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Applications of Telone II
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Chloropicrin
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Metam Application
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Non-treated
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MIDAS
MB
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DMDS
3 Way
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Number of Purple Nutsedge Plants Per Plot at
Harvest (1 bed 25 feet). 2006
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Alternative Mulches
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No fumigant
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MB 350 lb/A Broadcast
LDPE
Metalized
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MIDAS 350 lb/A Broadcast
LDPE
Metalized
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DMDS 750 lb/A Broadcast
LDPE
Metalized
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Number of Nutsedge Emerged Through Mulch with
Methyl Bromide Applied Under LDPE or Metalized
Smooth Mulch. 4 WAT. LTF, Fall 2005.
d
c
b
a
Plots were 3 beds by 1500 row feet. Counts made
on 3 beds 400 row feet.
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How Do Alternative Mulches Work?
MB
MB
MB
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How Do Alternative Mulches Work?
MB
MB
MB
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How Do Alternative Mulches Work?
High Concentration
MB
MB
MB
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Culpeppers Cost of Fumigant and Mulch Per Acre
of Land (32 bedtop, 5 ft center)
Assumption Rate of MB/MIDAS can be reduced 40
when applied under metalized/VIF mulch.
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Large On Farm Trials



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Treatments (Large Plot Efforts)

• Telone II fb chloropicrin fb Vapam
• MB (methyl bromide plus chloropicrin)

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Weed Response to MB Alternatives
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Harvested 3 trials

• Pepper
• Cantaloupe
• Tomato

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YIELDS
MB did not beat 3 Way at any location
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Other Options?
1. Do I need Telone, Pic, and Vapam?
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Telone II (12 G) fb Chloropicrin (150 lb) fb
Vapam (75 G)
V4-05, 60 DAT
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Telone II (12 G) fb Vapam (75 G)
V4-05, 60 DAT
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Telone C35 (35 G) fb Pic (150 lbs)
V4-05, 60 DAT
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Weed Response to MB Alternatives
Bill Brim Lewis Taylor Farms
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Issues With Alternatives

• Interval between fumigating and planting.

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Transplanted 21 DAT
VIF
LDPE
Telone II fb chloropicrin
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Issues With Alternatives

• Interval between fumigating and planting.
• Color of mulch impact on growth.

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Pepper Fruit Relative to MB. Fall 2006.
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Pounds of Pepper For Harvest 1 and 2 in Spring
Trial. Pooled Over Fumigants.
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Issues With Alternatives

• Interval between fumigating and planting.
• Color of mulch impact on growth.
• Life span of alternative mulch.

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Issues With Alternatives

• Interval between fumigating and planting.
• Color of mulch impact on growth.
• Life span of alternative mulch.
• Higher price of alternative mulch.

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Issues With Alternatives

• Interval between fumigating and planting.
• Color of mulch impact on growth.
• Life span of alternative mulch.
• Higher price of alternative mulch.
• Application Procedures

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Soil Properties and Application Method Will Play
A Crucial Role
Picture provided by Tony Weiss, Dow Agro.
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Issues

• Interval between fumigating and planting.
• Color of mulch impact on growth.
• Life span of alternative mulch.
• Higher price of alternative mulch.
• Application Procedures
• Spring vs. fall application in GA

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Bigger Issue than Loss of MB?
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Bigger Issue than Loss of MB?

• BUFFER RESTRICTIONS FOR ALL FUMIGANTS

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On Farm Cooperators Coggins Farms Lewis Taylor
Farms Southern Valley Produce
Application Help Hendrix and Dail John Mirusso
Industry AmVac Arysta Cerexagri Dow Agro
Cooperators