Slide Presentation

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AUTHOR
A. S. Culpepper, University of Georgia
A. C. York, N. C. State University

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TABLE OF CONTENTS
  1. Valor Directed In Cotton
  2. Discussion Objectives
  3. 20 Locations From 1998 - 2003
  4. POST-Directed Weed Control
  5. Broadleaf Weeds Present
  6. Grass Weeds Present
  7. Comparison of Roundup to Roundup + Valor
  8. Percent Yellow Nutsedge Control by Roundup or Roundup + Valor.
  9. Weeds Difficult to Control by Glyphosate?
  10. Weeds Difficult to Control by Glyphosate?
  11. Percent Ipomoea Morningglory Control by Roundup or Roundup + Valor.
  12. No Directed Application vs. Roundup UltraMax 1.6 pt
  13. No Directed Application vs. Roundup UltraMax 1.6 pt + Valor 1 oz
  14. Percent Florida Pusley Control by Roundup or Roundup + Valor.
  15. Percent Palmer Amaranth Control by Roundup or Roundup + Valor.
  16. Percent Pink Purslane Control by Roundup or Roundup + Valor.
  17. Percent Tropical Spiderwort Control by Roundup or Roundup + Valor.
  18. Percent Annual Grass Control by Roundup or Roundup + Valor.
  19. Weeds Present For Comparison of Valor + MSMA to RU + Valor
  20. Weeds Present For Comparison of Valor + MSMA to RU + Valor
  21. No Directed Application vs. Valor 2 oz + MSMA 2 lb
  22. Percent Annual Grass Control by Roundup + Valor and Valor + MSMA.
  23. Percent Tropical Spiderwort Control by Roundup + Valor and Valor + MSMA.
  24. Discussion Objectives
  25. Percent Cotton Injury by Roundup + Valor and Valor + MSMA. 7 Locations.
  26. Lint Cotton Yield by Roundup or Roundup + Valor. 12 Locations.
  27. Lint Cotton Yield by Roundup or Roundup + Valor. 6 Locations.
  28. Herbicide Injury
  29. Percent Cotton Injury When Applying to Young, Small, Green Cotton.
  30. Impact of Crop Oil Cotton Response. Applied to Small Cotton (10-12"). 2 Loc.
  31. Measure Crop Ht.
  32. Hooded Sprayers
  33. Sprayer
  34. Sprayer
  35. Crop Tolerance and Application in the Cotton Crops
  36. Questions?



SLIDE CONTENTS
  1. Valor Directed In Cotton S. Culpepper & A. C. York
  2. Discussion Objectives POST and residual weed control Crop tolerance Application methods
  3. 20 Locations From 1998-2003 * * * * * * * *
  4. POST-Directed Weed Control* Roundup Roundup + Valor (1 oz/A) Valor (2 oz/A) + MSMA *Treatments applied precision directed after early season application of 2 Roundups or Prowl fb Roundup. Roundup and MSMA products loaded.
  5. Broadleaf Weeds Present common lambsquarters (1) common ragweed (1) eclipta (1) entireleaf mg (2) Florida beggarweed (3) Florida pusley (4) groundcherry (1) Palmer amaranth (5) pink purslane (2) pitted mg (9) sicklepod (6) smallflower mg (4) tropical spiderwort (6) yellow nutstedge (3)
  6. Grass Weeds Present crowfootgrass (1) large crabgrass (2) mixture of crabgrass and goosegrass (1) Texas panicum (2)
  7. Comparison of Roundup to Roundup + Valor* common lambsquarters (100%) common ragweed (100%) eclipta (100%) entireleaf mg Florida beggarweed (98%) Florida pusley groundcherry (100%) Palmer amaranth pink purslane pitted mg sicklepod (97%) smallflower mg (94%) tropical spiderwort yellow nutstedge *Weeds highlighted in yellow noted differences in control b/w treatments.
  8. Percent Yellow Nutsedge Control by Roundup or Roundup + Valor. 8-12 d after treatment late-season 55 85 71 84
  9. Weeds Difficult to Control by Glyphosate?
  10. Percent Ipomoea Morningglory Control by Roundup or Roundup + Valor. 8-12 d after treatment late-season 61 95 83 94
  11. Roundup UltraMax 1.6 pt No Directed Application 5 DAT
  12. Roundup UltraMax 1.6 pt + Valor 1 oz No Directed Application 5 DAT
  13. Percent Florida Pusley Control by Roundup or Roundup + Valor. 8-12 d after treatment late-season 95 97 84 96
  14. Percent Palmer Amaranth Control by Roundup or Roundup + Valor. 8-12 d after treatment late-season 97 98 91 99
  15. Percent Pink Purslane Control by Roundup or Roundup + Valor. 8-12 d after treatment late-season 93 99 89 98
  16. Percent Tropical Spiderwort Control by Roundup or Roundup + Valor. 8-12 d after treatment late-season 49 72 41 59
  17. Percent Annual Grass Control by Roundup or Roundup + Valor. 8-12 d after treatment late-season 98 96 93 94
  18. Weeds Present For Comparison of Valor + MSMA to RU + Valor common ragweed (1) entireleaf mg (2) Florida beggarweed (2) Florida pusley (2) groundcherry (1) Palmer amaranth (3) pitted mg (6) sicklepod (3) smallflower mg (2) tropical spiderwort (4) annual grasses (2)
  19. Weeds Present For Comparison of Valor + MSMA to RU + Valor common ragweed (1) entireleaf mg (2) Florida beggarweed (2) Florida pusley (2) groundcherry (1) Palmer amaranth (3) pitted mg (6) sicklepod (3) smallflower mg (2) tropical spiderwort (4) annual grasses (2)
  20. Valor 2 oz + MSMA 2 lb No Directed Application 5 DAT
  21. Percent Annual Grass Control by Roundup + Valor and Valor + MSMA. 8-12 d after treatment late-season 98 96 93 94 79 78
  22. Percent Tropical Spiderwort Control by Roundup + Valor and Valor + MSMA. 8-12 d after treatment late-season 50 80 31 46 84 64
  23. Discussion Objectives POST and residual weed control Crop tolerance Application method
  24. Percent Cotton Injury by Roundup + Valor and Valor + MSMA. 7 Locations. 5 d after treatment 1 5 0 2 5 3 14 d after treatment
  25. Lint Cotton Yield by Roundup or Roundup + Valor. 12 Locations. 1359 1363 Lb/A
  26. Lint Cotton Yield by Roundup or Roundup + Valor. 6 Locations. 1558 1525 Lb/A 1506
  27. Herbicide Injury When cotton is green (no woody material) at time of application, injury can be sever
  28. Percent Cotton Injury When Applying to Young, Small, Green Cotton. 8 d after treatment 23 32 12 27 45 61 16 d after treatment
  29. Impact of Crop Oil Cotton Response. Applied to Small Cotton (10-12). 2 Loc. 8 d after treatment 17 41 Percent Injury Valor 2 oz + MSMA
  30. Hooded Sprayers
  31. Crop Tolerance and Application in the Cotton Crops 1) It is essentially to have large barky cotton prior to application. 2) Use a loaded tank mix partner (RU or MSMA) or add only a NIS. 3) Make only precision applications.
  32. QUESTIONS?