gejala serangan hama kutu kebul (bemisia tabacii)

green leaf plant flower produce food nature herb insect invertebrate branch tree shrub vegetable grass wildflower gejala serangan hama kutu kebul bemisia tabacii symptoms whitefly pest attacks include necrotic spots damaged cells tissue whiteflies affect growth populations high secrete honeydew fluid good medium sooty mold presence black dew surface chili leaves inhibit photosynthesis process farmers control selecting seeds healthy resistant pests