The insecticide application were made as threshold level in south Texas exceeded 0.3 larvae per plant. Sampling began 2-3 weeks before the population of cabbage looper and diamondback moth reached the economic threshold, and thereafter, oncxe per week on the day before the next Bt application. Number of small and large larvae of both cabbage looper and diamondback moth per plant were counted by checking both the upper and lower surfaces of every leaf on each plant, and 10 plants per plot were examined. A total of 440 plants were examined per week. The materials tested had different response to diamondback moth and cabbage looper.
All materials are almost equally well against diamondback moth and cabbage looper.
However, the foliage damage was significantly different among the treatments, with the higher rate of ABG-6405, the lowest, and the untreated control, the highest. 0.0a 0.9b ABG-6405 1.0 0.