Insect Pest Management in Virginia Cotton, Peanut, and Soybean

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Test: PT11-CEW-2, Evaluation of foliar treatments for lepidopteran pest management in peanut # Material Rate Dates treated 1 Prevathon 0.43SC 9.8 oz/A Aug 16 (= DPX-E2Y45) 2 Prevathon 0.43SC 13.4 oz/A Aug 16 (= DPX-E2Y45) 3 Coragen 1.67SC 5 oz/A Aug 16 4 Prevathon 0.43SC 4.15 oz/A Aug 16 (or DPX-E2Y45 5%SC) + Asana XL 4.75 oz/A 5 Belt 4SC 2 oz/A Aug 16 6 Steward 1.25EC 4.6 oz/A Aug 16 7 Exirel 10SE + Methylated spray oil 8 Exirel 10SE + Methylated spray oil 9 Untreated 0.088 lb ai/A 0.25% v/v 0.134 lb ai/A 0.25% v/v Aug 16 Aug 16 Exirel was buffered to a pH of 5-7 with Buffer Xtra Strength Test: PT11-CEW2 Year: 2011 Crop: Peanut Variety: NC V11 Field: n/a Location: Mike Grizzard farm, Southampton Co., VA Experimental design: RCBD Plot size: 2 rows x 40’ Row spacing: 36” Planting date: May 8 Dig date: n/a Harvest date: n/a Row feet harvested: n/a 123
Treatment application(s): Full coverage using backpack Nozzle type: D2-13 Nozzle spacing: 3 nozzles per row PSI: 42 GPA: 14.7 Comments: Pre-treatment counts indicated 7 small, 7 medium, and 3 large larvae per 3-ft beat cloth sample. Mandibular dissection indicated 76% corn earworm larvae and 24% tobacco budworm larvae on August 16 (n=25). Herbicides Date Product Rate/A 4/18 Prowl 1.5 pt 5/15 Strongarm 0.45 oz 5/15 Dual 1 pt 5/15 Gramoxone 11 oz 5/20 Dual 12 oz 6/06 Storm 12 oz 6/06 Butyrac 5 oz Additional insecticides Date Product Rate/A 5/08 Temik 15G 7 lb 5/20 Orthene 97 4 oz 6/29 Lorsban 15G 11 lb Fungicides Date Product Rate/A 6/29 Stratego 5 oz 7/20 Headline 8 oz 8/14 Provost 8 oz 9/30 Bravo 1.5 pt Lime, fertilizer, landplaster, & adjuvants Date Product Rate/A 6/01 Peanut Maker Landplaster 1100 lb 7/20 Mandate 2 lb Fumigants Date Product Rate/A 4/18 Metam 7.5 gal 124
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2011 Insect Pest Management in Virg
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ACKNOWLEDGMENTS The authors wish to
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INDEPENDENT CROP CONSULTANTS Chad H
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Contents Acknowledgments ..........
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Climatological Summary of the 2011
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Table 2. Daily precipitation (inche
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Table 3. Soil types, nutrient analy
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Test: CT11-THP-Regional-Irrigated,
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Table 4. Thrips injury ratings 1 ,
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Table 6. Plant height 1 , number of
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Test: CT11-THP-Regional-Dryland, Ef
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Table 10. Plant height 1 , number o
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Test: CT11-THP-Regional-Foliar, Eff
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Table 14. Plant height 1 , number o
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Test: CT11-THP-Regional-Eastern, Va
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Table 16. Thrips injury ratings and
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Test: CT11-THP-Bayer, Evaluation of
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Table 19. Thrips injury ratings and
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Test: CT11-THP-Dow, Efficacy of fol
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Table 21. Stand counts, thrips inju
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Test: CT11-THP-PHY, Test to evaluat
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Table 23. Stand counts, thrips inju
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Table 24. Stand counts, number of n
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Table 26. Mean number of thrips per
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Treatment application(s): Liquid in
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Table 28. Mean number of thrips per
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Table 29. Stand counts, plant heigh
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Treatment application(s): Broadcast
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Treatment means (% bollworm damage,
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Table 31. Percent external bollworm
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Test: CT11-BW4, Efficacy of selecte
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Lint 2 Table 35. Percent external b
Page 73 and 74: Table 36. Percent external bollworm
Page 75 and 76: Table 37. Percent external bollworm
Page 77 and 78: Treatment application(s): Broadcast
Page 79 and 80: Test: CT11-SBUG-Valent, Evaluation
Page 81 and 82: Table 39. Percent internal boll dam
Page 87 and 88: Test: PT11-THP-1, Evaluation of in-
Page 89 and 90: Table 42. Stand counts, PT11-THP-1.
Page 91 and 92: Table 44. Mean number of thrips per
Page 93 and 94: Test: PT11-THP-2, Evaluation of liq
Page 95 and 96: Table 46. Stand counts and yield, P
Page 99 and 100: Treatment application(s): Liquid in
Page 101 and 102: Table 50. Thrips injury ratings 1 ,
Page 103 and 104: Treatment application(s): Broadcast
Page 105 and 106: Table 52. Thrips injury ratings 1 ,
Page 107 and 108: Test: PT11-THP-Syngenta-1, Evaluati
Page 109 and 110: Table 54. Stand counts and thrips i
Page 111 and 112: Table 56. Tomato spotted wilt virus
Page 113 and 114: Treatment application(s): Granular
Page 117 and 118: Test: PT11-THP-VA Lines, Evaluation
Page 119 and 120: Table 61. Thrips injury ratings and
Page 121 and 122: Table 62. Stand counts on May 19 an
Page 123: Table 63. Mean number of larvae per
Page 127 and 128: Test: PT11-CEW-3, Evaluation of fol
Page 129 and 130: Table 65. Mean number of larvae per
Page 131 and 132: Table 66. Southern corn rootworm me
Page 133 and 134: Test: SB11-SEED-1, Evaluation of se
Page 135 and 136: Table 68. Thrips injury ratings 1 a
Page 137 and 138: Table 69. Stand counts, thrips coun
Page 139 and 140: Test: SB11-BMSB-1, Efficacy of foli
Page 141 and 142: Table 71 (continued). Mean number o
Page 143 and 144: Table 72. Mean number of brown marm
Page 145 and 146: Table 73. Mean number of brown marm
Page 153 and 154: Table 77. Mean number of insects pe
Page 155 and 156: Table 79. Results of the 2011 Virgi
Page 157 and 158: Figure 1. Corn earworm regression.
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Insect Pest Management in Virginia Cotton, Peanut, and Soybean

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