With puce dumbbell shape of big spot is yellow thorn moth larvae, the other is green thorn moth larvae.
Cnidocampa flavescens ,Lepidoptera, dates moth families,its Latin Name called cnidocampa flavescens（Walker）.Cnidocampa flavescens is almost all over other provinces in China except theningxia, xinjiang, guizhou, Tibet.It is also found in Japan, Korea, the Soviet union (Siberian) and other countries.The larva harms jujube、Juglans regia L、persimmon、Chinese ash、apple 、poplar and other more than 90 kinds of plants.It Will eat leaves into many holes, incision or leave petiole, Lord only pulse, it's seriously affect the tree potential and fruit production.
Control method: in the larva 1-2 age period or in the leaves appeared white or translucent plaques early ,annual per mu uses the 100 ml 10 billion spores/ml Empedobacter brevis GXW15-4 pesticide to add 60kg water to spray in the pros and cons of cotton blade uniformly. |
