Insect Pest Management in Virginia Cotton, Peanut, and Soybean

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Table 25. Thrips injury ratings and yield, CT11-THP-AMVAC. Tidewater AREC, Suffolk, VA, 2011. Lint lb/acre 2 # Material Rate May 24 May 31 Jun 8 Thrips injury rating 1 1 Untreated 3.38 a 4.44 a 3.94 a 1001 2 Thimet 20G 3.5 lb/A 2.00 b 2.31 b 0.81 bc 1008 3 Thimet 20G 5 lb/A 1.44 c 1.94 c 0.69 bc 840 4 Thimet 20G 7 lb/A 1.31 c 1.50 d 0.56 c 1127 5 Temik 15G 5 lb/A 0.94 d 1.50 d 0.88 b 1122 6 Temik 15G 7 lb/A 0.75 d 1.13 e 0.63 bc 1128 LSD 0.29 0.20 0.27 NS Means within a column followed by the same letter(s) are not significantly different (Protected LSD, P=0.05). 1 Thrips injury based on a 0-5 scale, 0 = no injury and 5 = dead plants. 2 Cotton was harvested on October 17. Gross yields were reduced by 54.8% to account for seed and trash. 49
Table 26. Mean number of thrips per 5 plants, CT11-THP-AMVAC. Tidewater AREC, Suffolk, VA, 2011. May 17 (1 st true leaf bud stage) May 24 (1-2 true leaf stage) May 31 (3-4 true leaf stage) Jun 7 # Material Rate Immature Adult Immature Adult Immature Adult Immature Adult 1 Untreated 1.25 a 18.25 a 42.50 a 7.75 a 59.75 a 9.75 31.00 a 3.00 2 Thimet 20G 3.5 lb/A 0.00 b 2.00 b 3.25 b 1.25 b 8.25 b 9.50 9.00 b 4.50 3 Thimet 20G 5 lb/A 0.25 b 3.25 b 2.25 b 2.50 b 8.25 b 6.75 10.25 b 5.50 4 Thimet 20G 7 lb/A 0.00 b 2.00 b 2.25 b 1.00 b 4.25 b 10.00 6.50 b 2.75 5 Temik 15G 5 lb/A 0.00 b 0.75 b 1.75 b 0.75 b 6.25 b 11.50 16.50 ab 7.25 6 Temik 15G 7 lb/A 0.00 b 1.00 b 0.00 b 1.00 b 4.50 b 7.50 10.25 b 3.00 LSD 0.87 3.02 6.83 4.00 12.70 NS 14.67 NS Means within a column followed by the same letter(s) are not significantly different (Protected LSD, P=0.05). 50
Page 1 and 2: 2011 Insect Pest Management in Virg
Page 3 and 4: ACKNOWLEDGMENTS The authors wish to
Page 5 and 6: INDEPENDENT CROP CONSULTANTS Chad H
Page 7 and 8: Contents Acknowledgments ..........
Page 9 and 10: Climatological Summary of the 2011
Page 11 and 12: Table 2. Daily precipitation (inche
Page 13 and 14: Table 3. Soil types, nutrient analy
Page 15 and 16: Test: CT11-THP-Regional-Irrigated,
Page 17 and 18: Table 4. Thrips injury ratings 1 ,
Page 19 and 20: Table 6. Plant height 1 , number of
Page 21 and 22: Test: CT11-THP-Regional-Dryland, Ef
Page 25 and 26: Table 10. Plant height 1 , number o
Page 27 and 28: Test: CT11-THP-Regional-Foliar, Eff
Page 31 and 32: Table 14. Plant height 1 , number o
Page 33 and 34: Test: CT11-THP-Regional-Eastern, Va
Page 35 and 36: Table 16. Thrips injury ratings and
Page 37 and 38: Test: CT11-THP-Bayer, Evaluation of
Page 39 and 40: Table 19. Thrips injury ratings and
Page 41 and 42: Test: CT11-THP-Dow, Efficacy of fol
Page 43 and 44: Table 21. Stand counts, thrips inju
Page 45 and 46: Test: CT11-THP-PHY, Test to evaluat
Page 47 and 48: Table 23. Stand counts, thrips inju
Page 49: Table 24. Stand counts, number of n
Page 53 and 54: Treatment application(s): Liquid in
Page 55 and 56: Table 28. Mean number of thrips per
Page 57 and 58: Table 29. Stand counts, plant heigh
Page 59 and 60: Treatment application(s): Broadcast
Page 61 and 62: Treatment means (% bollworm damage,
Page 63 and 64: Table 31. Percent external bollworm
Page 67 and 68: Test: CT11-BW4, Efficacy of selecte
Page 71 and 72: Lint 2 Table 35. Percent external b
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 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 115 and 116:
Table 58. Mean number of thrips per
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 and 124:
Table 63. Mean number of larvae per
Page 125 and 126:
Treatment application(s): Full cove
Page 127 and 128:
Test: PT11-CEW-3, Evaluation of fol
Page 129 and 130:
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 147 and 148:
Page 149 and 150:
Page 151 and 152:
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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