Tobacco budworm name green worm, also known as tobacco moth, happens every year 2～ 6 generations, with different smoke temperature change. In the Huang Huai area of smoke, the pupa in 7 ~ 13 cm deep in the soil to overwinter, overwintering adults in late May to early June, and for the peak period of laying; 2 to 4 generations of the peak period of laying in mid June to mid July, early July to August, on the middle,, in early August to early September. The first generation to the third generation main harm spring, summer tobacco; the fourth generation harm summer tobacco flowers, fruits, of which second, third generations of the hazards of tobacco.
The larvae hatch at the beginning of feeding eggshell, which climbed to the top of tobacco plant, feeding on leaves so that the Ye Cheng holes, smaller circadian feeding, food, tobacco budworm after age 3, the day hidden in the leaves or soil seams, night, morning activities, on top of leaves, leaf killed size hole, broken; tobacco budworm damage tobacco capsule, they can be eaten hollow, or cause the rotten fruit, fruit drop.
Recommended prevention methods: egg hatching peak period using the best. If you missed the egg hatching peak period, should be in the tobacco budworm 3 years old chemical control. 10000000000 spores /ml Empedobacter brevis suspension agent per 667m2 with 80 ~ 100 ml versus 45 kg water spray mist. |
