Density/Cultivar Time (h) Time (h) Time (h) Time (h)
0 24 48 72
30 aphids/non-Bt cotton/ 0.42 - 0.52 A b 0.47 - 0.74 A ab 0.55 - 0.85 A a 0.58 - 0.77 B a
60 aphids/non-Bt cotton 0.45 - 0.73 A b 0.55 - 1.67 A ab 0.78 - 3.03 A a 0.67 - 1.48 AB ab
30 aphids/Bt cotton 0.45 - 1.16 A a 0.45 - 0.83 A a 0.57 - 0.87 A a 0.77 - 1.55 AB a
60 aphids/Bt cotton 0.42 - 0.90 A b 0.63 - 0.80 A b 0.70 - 1.05 A b 1.12 - 1.46 A a