TITLE    (click title to view slides)

2006: MB Alternatives Being Developed in GA

Stanley Culpepper
Extension Weed Specialist
University of Georgia
Tifton, GA

• Slide Presentation (PowerPoint, 2.8 MB)
• PowerPoint Viewer from Microsoft

TABLE OF CONTENTS

2006: MB Alternatives Being Developed in GA Methyl Bromide Critical Use Exemption Methyl Bromide Critical Use Exemption. Price of Bromide! Loss of Methyl Bromide Objective Telone II fb Chloropicrin fb Vapam Viable MB Fumigant Alternatives MB Alternatives Research on LDPE Culpepper's Cost of Fumigant and Mulch Per Acre of Land Telone II fb Chloropicrin fb Vapam MIDAS, Bromide, Pic and DMDS Applications of Telone II Chloropicrin Metam Application Non-treated MIDAS compared to MB DMDS compared to 3 Way Number of Purple Nutsedge Plants Per Plot at Harvest Nutsedge Alternative Mulches No fumigant MB 350 lb/A Broadcast; LDPE vs Metalized MB 350 lb/A Broadcast; LDPE vs Metalized DMDS 750 lb/A Broadcast; LDPE vs Metalized Number of Nutsedge Emerged Through Mulch with MB Applied under LDPE or Metalized How do Alternative Mulches Work? How do Alternative Mulches Work? How do Alternative Mulches Work? Culpepper's Cost of Fumigant and Mulch per Acre of Land Large on Farm Trials Treatments (Large Plot Efforts) Farm Trial Weed Response to MB Alternatives Harvested 3 trials Harvest Harvest Harvest Yields Other Options? Telone II (12 G) fb Chloropicrin (150 lb) fb Vapam (75 G) Telone II (12 G) fb Vapam (75 G) Telone C35 (35 G) fb Pic (150 lbs) Weed Response to MB Alternatives Issues With Alternatives Telone II fb Chloropicrin: VIF vs LDPE Issues With Alternatives Pepper Fruit Relative to MB. Fall 2006. Pounds of Pepper For Harvest 1 and 2 in Spring Trial. Issues With Alternatives Life span of alternative mulch Life span of alternative mulch Issues With Alternatives Issues With Alternatives Soil Properties and Application Method Will Play a Crucial Role Issues Bigger Issue than Loss of MB? Bigger Issue than Loss of MB? Cooperators

SLIDE CONTENTS

2006: MB Alternatives Being Developed in GA University of Georgia Tifton Campus Methyl Bromide Critical Use Exemption Methyl Bromide Critical Use Exemption PRICE OF BROMIDE! Loss of Methyl Bromide OBJECTIVE Develop and implement economical fumigant alternatives to MB Telone II fb Chloropicrin fb Vapam 2006 2004 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 MB Alternatives Research on LDPE MIDAS (50:50 at 350 lb/A broadcast) DMDS (79:21 at 74 G/A broadcast) Telone II (12G) fb chloropicrin (150 lb) fb Vapam (75 G) MB (67:33 at 350 lb/A broadcast) None Culpepper’s Cost of Fumigant and Mulch Per Acre of Land (32” bedtop, 5 ft center) HUGE ASSUMPTION MB 67:33 is $3.75/lb. Telone II fb Chloropicrin fb Vapam 2006 2004 MIDAS, Bromide, Pic and DMDS Applications of Telone II Chloropicrin Metam Application Non-treated MIDAS MB DMDS 3 Way Number of Purple Nutsedge Plants Per Plot at Harvest (1 bed 25 feet). 2006 Alternative Mulches No fumigant MB 350 lb/A Broadcast LDPE Metalized MIDAS 350 lb/A Broadcast LDPE Metalized DMDS 750 lb/A Broadcast LDPE Metalized Number of Nutsedge Emerged Through Mulch with Methyl Bromide Applied Under LDPE or Metalized Smooth Mulch. 4 WAT. LTF, Fall 2005. Plots were 3 beds by 1500 row feet. Counts made on 3 beds 400 row feet. How Do Alternative Mulches Work? How Do Alternative Mulches Work? How Do Alternative Mulches Work? Culpepper’s 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. * Large On Farm Trials * * Treatments (Large Plot Efforts) Telone II fb chloropicrin fb Vapam MB (methyl bromide plus chloropicrin) Weed Response to MB Alternatives Harvested 3 trials Pepper Cantaloupe Tomato YIELDS MB did not beat 3 Way at any location 1. Do I need Telone, Pic, and Vapam? Other Options? Telone II (12 G) fb Chloropicrin (150 lb) fb Vapam (75 G) V4-05, 60 DAT Telone II (12 G) fb Vapam (75 G) V4-05, 60 DAT Telone C35 (35 G) fb Pic (150 lbs) V4-05, 60 DAT Weed Response to MB Alternatives Bill Brim – Lewis Taylor Farms Issues With Alternatives Interval between fumigating and planting. VIF LDPE Telone II fb chloropicrin Transplanted 21 DAT Interval between fumigating and planting. Color of mulch impact on growth. Issues With Alternatives Pepper Fruit Relative to MB. Fall 2006. Pounds of Pepper For Harvest 1 and 2 in Spring Trial. Pooled Over Fumigants. Issues With Alternatives Interval between fumigating and planting. Color of mulch impact on growth. Life span of alternative mulch. Issues With Alternatives Interval between fumigating and planting. Color of mulch impact on growth. Life span of alternative mulch. Higher price of alternative mulch. 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 Soil Properties and Application Method Will Play A Crucial Role Picture provided by Tony Weiss, Dow Agro. 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 Bigger Issue than Loss of MB? Bigger Issue than Loss of MB? BUFFER RESTRICTIONS FOR ALL FUMIGANTS Cooperators On Farm Cooperators Coggins Farms Lewis Taylor Farms Southern Valley Produce Application Help Hendrix and Dail John Mirusso Industry AmVac Arysta Cerexagri Dow Agro