(A) and body shape to identify hazards
Against the blade. Leaf chlorosis victims appear white point, white point after the lace into a white spot, white leaves serious, detached, and not mature ear and dendrite.
Body pale yellow, 3-3.5 mm in body length. There are two black head Vipera, wings yellowish-white, translucent. Stay in the body against the back of the leaves.
(B) control methods
(1) the occurrence of the adult or nymph spray 3000 กม 80% dichlorvos or 1500 กม 40% dimethoate or 5000 กม 20% speed kill small.
(2) fall clean-up orchards, burning leaves, the eradication of overwintering adults.