Insect Pest Management in Virginia Cotton, Peanut, and Soybean
Insect Pest Management in Virginia Cotton, Peanut, and Soybean
Insect Pest Management in Virginia Cotton, Peanut, and Soybean
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Table 34. Percent external bollworm damage <strong>and</strong> yield, CT11-BW4. Tidewater AREC,<br />
Suffolk, VA, 2011.<br />
Percent external bollworm<br />
damage 1<br />
# Material Rate<br />
Aug 8 Aug 15 L<strong>in</strong>t lb/acre 2<br />
1 Belt SC 4 oz/A (BC @ ET) 1.00 bc 1.00 b 778<br />
2 Coragen 1.67SC 6.74 oz/A (BC @ ET) 0.00 c 0.00 b 806<br />
3 Besiege 10 oz/A (BC @ ET) 2.00 b 2.00 b 706<br />
4 Prevathon 13.3 oz/A (BC @ ET) 0.00 c 2.00 b 742<br />
5 Radiant SC 6 oz/A (BC @ ET) 1.00 bc 2.00 b 745<br />
6 Baythroid XL 1.6 oz/A (BC @ ET)<br />
0.00 c 1.00 b 776<br />
2.6 oz/A (BC @ 5-7 d after ET)<br />
7 Leverage 360 2.8 oz/A (BC @ ET)<br />
0.00 c 1.00 b 726<br />
3.2 oz/A (BC @ 5-7 d after ET)<br />
8 Karate Z 1.6 oz/A (BC @ ET)<br />
0.00 c 1.00 b 815<br />
2.56 oz/A (BC @ 5-7 d after ET)<br />
9 Endigo ZCX 5 oz/A (BC @ ET)<br />
0.00 c 1.00 b 712<br />
5 oz/A (BC @ 5-7 d after ET)<br />
10 Fastac 2 oz/A (BC @ ET)<br />
0.00 c 2.00 b 721<br />
2 oz/A (BC @ 5-7 d after ET)<br />
11 Fastac 4 oz/A (BC @ ET)<br />
0.00 c 1.00 b 761<br />
4 oz (BC @ 5-7 d after ET)<br />
12 Brigade 2EC 2.6 oz/A (BC @ ET)<br />
0.00 c 3.00 b 751<br />
4 oz (BC @ 5-7 d after ET)<br />
13 Untreated 10.00 a 17.00 a 589<br />
LSD 1.56 4.69 NS<br />
Means with<strong>in</strong> a column followed by the same letter(s) are not significantly different (Protected LSD, P=0.05).<br />
1 External bollworm damage based on a sample of 25 bolls per plot.<br />
2 <strong>Cotton</strong> was harvested on October 21. Gross yields were reduced by 58.7% to account for seed <strong>and</strong> trash.<br />
68
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