Slide Presentation

TITLE    (click title to view slides)

AUTHOR
Stanley Culpepper
Extension Weed Specialist
University of Georgia
Tifton, GA

DOWNLOAD
• Slide Presentation (PowerPoint, 4.4 MB)

TABLE OF CONTENTS
  1. The Search for MB Alternatives Continues During 2005
  2. Objectives
  3. Efforts Have Focused
  4. Photo
  5. Fumigants and Rates (2002 to 2004)
  6. Spring 2005 Efforts
  7. Fall 2005 Efforts
  8. Fumigant Options
  9. Telone II (12 G) fb Vapam (75 G)
  10. Telone C35 (35G) fb Pic (150 lbs)
  11. Telone II (12 G) fb Chloropicrin (150 lbs) fb Vapam (75 G)
  12. Fumgiant Options
  13. Soil Properties and Application Method Will Play a Crucial Role
  14. MIDAS, Bromide, Pic and Exp.
  15. Applications of Telone II
  16. Vapam Application
  17. Second Attempt
  18. Metam Application
  19. Fall Fumgiant Treatments
  20. Mulches
  21. Searching For Methyl Bromide Alternatives To Manage Nutsedge
  22. In Field Cooperators
  23. Photo
  24. Percent Nutsedge Control by Fumigants. Ponder Farm
  25. Percent Nutsedge Control by Fumigants. Ponder Farm
  26. Percent Nutsedge Control by Fumigants Applied Under Various Mulches
  27. Percent Nutsedge Control by Fumigants Applied Under Various Mulches
  28. Percent Nutsedge Control by Fumigants Applied Under Various Mulches
  29. No fumigant
  30. MB 350 lb/A Broadcast, LDPE Mulch
  31. MB 350 lb/A Broadcast, Metalized Smooth Mulch
  32. MIDAS 350 lb/A Broadcast, LDPE Mulch
  33. MIDAS 350 lb/A Broadcast, Metalized Smooth Mulch
  34. Telone II fb Pic fb Vapam Broadcast, LDPE Mulch
  35. Telone II fb Pic fb Vapam Broadcast, Metalized Smooth Mulch
  36. DMDS 750 lb/A Broadcast, LDPE Mulch
  37. DMDS 750 lbs Broadcast, Metalized Smooth Mulch
  38. Much research is still needed on metalized mulches
  39. Telone II fb chloropicrin
  40. Much research is still needed on metalized mulches
  41. Cost of Systems Per Acre, 2006
  42. Can we reduce the rate of these fumigants when applied under metalized smooth mulch?
  43. Number of Nutsedge Emerged Through Mulch
  44. Not Saying There is a Consistent MB Alternative BUT its Time to Try Some Things!!



SLIDE CONTENTS
  1. The Search for MB Alternatives Continues During 2005. University of Georgia Tifton Campus
  2. OBJECTIVES Find effective and economical alternatives Reduce the amount of MB used in GA
  3. Efforts Have Focused Fumigants Mulch Types Herbicides
  4. Fumigants and Rates (2002 to 2004) Methyl Bromide Chloropicrin Vapam Telone II fb chloropicrin Telone II fb metam Telone C35 fb chloropicrin MIDAS DMDS alone and with chloropicrin
  5. Spring 2005 Efforts Replicated small plot research trials Replicated field trials (10-20 acres) Demonstration trials (>120 acres) Evaluated over 30 possible fumigant combinations
  6. Fall 2005 Efforts Compared three fumigant alternatives Compared various types of plastic mulch
  7. Fumigant Options Telone II fb Chloropicrin fb Vapam
  8. Telone II (12 G) fb Vapam (75 G) V4-05, 60 DAT
  9. Telone C35 (35 G) fb Pic (150 lbs) V4-05, 60 DAT
  10. Telone II (12 G) fb Chloropicrin (150 lbs) fb Vapam (75 G) V4-05, 60 DAT
  11. Fumgiant Options* Telone II fb chloropicrin fb Vapam MIDAS (methyl iodide plus chloropicrin) DMDS (dimethyl disulfide plus chloropicrin) MB (methyl bromide plus chloropicrin) None
  12. Soil Properties and Application Method Will Play A Crucial Role Picture provided by Tony Weiss, Dow Agro.
  13. MIDAS, Bromide, Pic and Exp.
  14. Applications of Telone II
  15. rototiller blades nozzles for KPAM Vapam Application
  16. Second Attempt
  17. Metam Application
  18. Fall Fumgiant Treatments Telone II fb chloropicrin fb Vapam MIDAS (methyl iodide plus chloropicrin) DMDS (dimethyl disulfide plus chloropicrin) MB (methyl bromide plus chloropicrin) None Rates are broadcast: Telone II 12 G, chlororpicrin 150 lb, Vapam 75 G; MIDAS (50:50 mixture) 350 lbs; DMDS (80:20 mixture) 750 lbs; MB (67:33) 350 lbs.
  19. Mulches* Low density polyethylene (2 types) Metalized smooth (2 brands) Metalized embossed VIF (2 brands) LDPE mulch white on black, metalized mulch silver on white, VIF black on black
  20. Searching For Methyl Bromide Alternatives To Manage Nutsedge A. Stanley Culpepper and MANY others; University of Georgia Treatments and Fumigants Applied: July 14, 2005 Prelude II Squash Planted on August 10, 2005. Photos taken on August 30, 2005. See Summary Information for application procedures etc.
  21. In Field Cooperators Hendrix and Dale John Mirusso Dow Agro Sciences Arvesta Cerexagri
  22. Fumigants LDPE Percent Nutsedge Control by Fumigants. Ponder Farm, 2005.
  23. Fumigants LDPE Percent Nutsedge Control by Fumigants. Ponder Farm, 2005. *Culpepper’s cost per acre for 2006. Three way 24% cheaper than MB at 350 lb.
  24. Fumigants LDPE Percent Nutsedge Control by Fumigants Applied Under Various Mulches. Ponder Farm, 2005. Metalized Smooth
  25. Fumigants LDPE Percent Nutsedge Control by Fumigants Applied Under Various Mulches. Ponder Farm, 2005. Metalized smooth embossed
  26. Fumigants LDPE Percent Nutsedge Control by Fumigants Applied Under Various Mulches. Ponder Farm, 2005. Metalized smooth embossed VIF
  27. No fumigant
  28. MB 350 lb/A Broadcast, LDPE Mulch White Surface
  29. MB 350 lb/A Broadcast, Metalized Smooth Mulch Silver Surface
  30. MIDAS 350 lb/A Broadcast, LDPE Mulch White Surface
  31. MIDAS 350 lb/A Broadcast, Metalized Smooth Mulch Silver Surface
  32. White Surface Telone II (12 Gal) fb Pic (150 lb) fb Vapam (75 G) Broadcast, LDPE Mulch
  33. Silver Surface Telone II (12 Gal) fb Pic (150 lb) fb Vapam (75 G) Broadcast, Metalized Smooth Mulch
  34. White Surface DMDS 750 lb/A Broadcast, LDPE Mulch
  35. Silver Surface DMDS 750 lbs Broadcast, Metalized Smooth Mulch
  36. Much research is still needed on metalized mulches: Interval between fumigating and planting.
  37. VIF LDPE Telone II fb chloropicrin Transplanted 21 DAT
  38. Much research is still needed on metalized mulches: Interval between fumigating and planting. Difficulty to lay. Flaking. Longevity compared to standard LDPE mulch. Verify results noted in this trial. Higher price.
  39. Fumigants LDPE Cost of Systems Per Acre, 2006. Metalized smooth
  40. Can we reduce the rate of these fumigants when applied under metalized smooth mulch?
  41. 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.
  42. Not Saying There is a Consistent MB Alternative BUT its Time to Try Some Things!! Questions or Comments?