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Comparison of Herbicide Mixtures for Herbaceous Weed Control and Loblolly Pine Seedling Performance

This study explores the impact of various herbicide combinations on weed control and pine growth. Testing four herbicides, the research justifies further refinement and clarification of practices for effective control. Nacogdoches and Sturgis are primary locations for data collection, revealing insights into the efficacy of different mixtures. Statistical analyses such as Duncan’s New Multiple Range Test are employed to assess seedling survival, height, diameter, and volume index. Conclusions highlight the effectiveness of three-way mixtures and identify key herbicides for optimal control.

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Comparison of Herbicide Mixtures for Herbaceous Weed Control and Loblolly Pine Seedling Performance

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  1. J.L. YEISER STEPHEN F. AUSTIN STATE UNIVERSITY A.W. EZELL MISSISSIPPI STATE UNIVERSITY OUST EXTRA COMBINATIONS FOR HERBACEOUS WEED CONTROL AND LOBLOLLY PINE SEEDLING PERFORMANCE

  2. INTRODUCTION IMPACT OF HWC WIDELY TESTED WELL DOCUMENTED COMMONLY ACCEPTED PRACTICE JUSTIFIES CONTINUED REFINEMENT

  3. CLARIFICATION VELPAR DF=VELPAR OUST XP=OUST ESCORT XP=ESCORT ARSENAL AC=ARSENAL

  4. OBJECTIVE TO COMPARE: ARSENAL, ESCORT, OUST, AND VELPAR MIXTURES FOR: HWC AND PINE GROWTH

  5. METHODS

  6. METHODS

  7. METHODS

  8. NACOGDOCHES, TX8-JUN-03 60 DAT ARSENAL+OUST+ESCORT 6+3+1oz CHECK OUSTAR 13oz

  9. NACOGDOCHES, TX8-JUN-03 60 DAT ARSENAL+OUST+ESCORT 6+3+1oz OUST+ESCORT 3+1oz ARSENAL 6oz

  10. NACOGDOCHES, TX8-JUL-03 90 DAT CHECK OUSTAR 13oz

  11. NACOGDOCHES, TX8-JUL-03 90 DAT ARSENAL+OUST+ESCORT 6+3+1oz CHECK

  12. NACOGDOCHES, TX8-OCT-03 180 DAT OUSTAR 13oz CHECK ARSENAL+OUST+ESCORT 6+3+1oz

  13. STURGIS, MSARSENAL+OUST+ESCORT 6+3+1oz13-JUN-03 60 DAT

  14. STURGIS, MS ARSENAL+OUST+ESCORT 6+3+1oz 13-JUL-03 90 DAT

  15. STURGIS, MS ARSENAL+OUST+ESCORT 6+3+1oz 13-AUG-03 120 DAT

  16. STURGIS, MS ARSENAL+OUST+ESCORT 6+3+1oz 13-SEP-03 150 DAT

  17. MONTHLY RAINFALL TOTALSNEAR NACOGDOCHES, TX 2003

  18. NACOGDOCHES, TX

  19. NACOGDOCHES, TX

  20. NACOGDOCHES, TX a a a ab a a b a b b b ab c c b Duncan’s New Multiple Range Test

  21. a a a ab ab ab b b b a b a b a b NACOGDOCHES, TX Duncan’s New Multiple Range Test

  22. a a a a a a b b b b b Duncan’s New Multiple Range Test b b b b NACOGDOCHES, TX

  23. NACOGDOCHES, TXSEEDLING SURVIVAL

  24. NACOGDOCHES, TXTOTAL HEIGHT

  25. NACOGDOCHES, TXGROUND LINE DIAMETER

  26. NACOGDOCHES, TXVOLUME INDEX

  27. a ab a b b a ab c b NACOGDOCHES, TX 8.1 7.5 7.0 Duncan’s New Multiple Range Test

  28. a ab a b b a ab c b NACOGDOCHES, TX 2.10 1.90 1.69 Duncan’s New Multiple Range Test

  29. a ab c a ab b NACOGDOCHES, TX Duncan’s New Multiple Range Test NS

  30. NACOGDOCHES, TX

  31. STURGIS, MS

  32. STURGIS, MS

  33. STURGIS, MS

  34. AGE 1 & 2—STURGIS, MS

  35. AGE 1 & 2—STURGIS, MS

  36. CONCLUSIONS NO HERBICIDE DAMAGE OBSERVED THREE-WAY MIXTURES: MOST BARE GROUND MORE MONTHS BG % GROWTH TX MS 1 A+O+E THREE-WAY MIXTURES 1 1 2 HEX TWO-WAYS 2 3 3 OUST EXTRA TWO-WAYS 3 2 4 ARSENAL STAND ALONE 4 4 5 CHECK 5 5 Arsenal AC did not control Rubus and common ragweed Velpar DF+Oust XP did not control wooly croton and Rubus Escort XP controlled horseweed and Rubus and partial on wooly croton ACROSS BOTH SITES 3+1oz WAS BETTER THAN 2.25+.75oz

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