Insect Pest Management in Virginia Cotton, Peanut, and Soybean

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Insect Rating Scales Used in Efficacy Trials and Abbreviations Used in this Publication Thrips injury rating scale for cotton: 0 = no injury 1 = 10% injured leaves, no bud injury 2 = 25% injured leaves, no bud injury 3 = 75% injured leaves, 0-25% buds injured 4 = 90% injured leaves, >25% buds injured 5 = dead plants Thrips injury rating scale for peanut: 0 = no injury 1 = 10% leaves injured 2 = 20% leaves injured 3 = 30% leaves injured 4 = 40% leaves injured 5 = ≥ 50% leaves injured + ≤ 5% terminal buds injured 6 = ≥ 50% leaves injured + 25% terminal buds injured 7 = ≥ 50% leaves injured + 50% terminal buds injured 8 = ≥ 50% leaves injured + 75% terminal buds injured 9 = ≥ 50% leaves injured + 90% terminal buds injured 10 = dead plants Abbreviations used in this publication: 1 st tl: first true leaf ai: active ingredient BC: broadcast cotyl: cotyledon cwt: hundred-weight GC: ground-cracking IF: in-furrow RCBD: randomized complete block design Tidewater AREC: Tidewater Agricultural Research and Extension Center 5
Contents Acknowledgments ............................................................................................................................2 Insect Rating Scales Used in Efficacy Trials and Abbreviations Used in this Publication .............5 Climatological Summary of the 2011 Growing Season—Tidewater AREC, Suffolk, VA .............8 Soil types, nutrient analyses (ppm), and pH for tests conducted in 2011. .....................................12 Cotton Insect Pest Management Tests and Demonstrations Test: CT11-THP-Regional-Irrigated .............................................................................................14 Test: CT11-THP-Regional-Dryland .............................................................................................20 Test: CT11-THP-Regional-Foliar .................................................................................................26 Test: CT11-THP-Regional-Eastern ..............................................................................................32 Test: CT11-THP-Bayer .................................................................................................................36 Test: CT11-THP-Dow ..................................................................................................................40 Test: CT11-THP-PHY ..................................................................................................................44 Test: CT11-THP-AMVAC ...........................................................................................................47 Test: CT11-THP-DuPont ..............................................................................................................51 Test: CT11-THP-Nichino .............................................................................................................55 Test: CT11-BW1 ...........................................................................................................................57 Test: CT11-BW2 ...........................................................................................................................61 Test: CT11-BW3-Dow ..................................................................................................................63 Test: CT11-BW4 ...........................................................................................................................66 Test: CT11-BW-Everett ................................................................................................................69 Test: CT11-BW-Grizzard .............................................................................................................71 Test: CT11-BW-Lowe ..................................................................................................................73 Test: CT11-SBUG-Bayer/AMVAC ..............................................................................................75 Test: CT11-SBUG-Valent ............................................................................................................78 Test: CT11-SBUG-3 .....................................................................................................................81 Test: CT11-SBUG-4 .....................................................................................................................83 Peanut Insect Pest Management Tests and Demonstrations Test: PT11-THP-1 .........................................................................................................................86 Test: PT11-THP-2 .........................................................................................................................92 Test: PT11-THP-3 .........................................................................................................................97 Test: PT11-THP-Foliar ...............................................................................................................101 Test: PT11-THP-Syngenta-1 ......................................................................................................106 Test: PT11-THP-Syngenta-2 ......................................................................................................111 Test: PT11-THP-VA Lines .........................................................................................................116 Test: PT11-CEW-1 .....................................................................................................................121 Test: PT11-CEW-2 .....................................................................................................................123 Test: PT11-CEW-3 .....................................................................................................................126 Test: PT11-SCR1 ........................................................................................................................129 6
Page 1 and 2: 2011 Insect Pest Management in Virg
Page 3 and 4: ACKNOWLEDGMENTS The authors wish to
Page 5: INDEPENDENT CROP CONSULTANTS Chad H
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 and 50: Table 24. Stand counts, number of n
Page 51 and 52: Table 26. Mean number of thrips per
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 65 and 66:
Page 67 and 68:
Test: CT11-BW4, Efficacy of selecte
Page 69 and 70:
Page 71 and 72:
Lint 2 Table 35. Percent external b
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Test: CT11-SBUG-Valent, Evaluation
Page 81 and 82:
Table 39. Percent internal boll dam
Page 83 and 84:
Page 85 and 86:
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 97 and 98:
Page 99 and 100:
Treatment application(s): Liquid in
Page 101 and 102:
Table 50. Thrips injury ratings 1 ,
Page 103 and 104:
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:
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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