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Grape Panonychus

(A) the harm
Against leaf and ear. After the victim leaves a lot of dark brown stripes, a serious loss when scorch. After the injured ear, ear stems black, brittle easily broken. Fruit after the victim was rust colored. Rough skin, and sometimes cracks, and shading effects of fruit growth.
(B) control methods
(1) spring germination 3 degrees when the spray detergent plus 0.3%.
(2) July-August between 3000 กม 73% spray Propargite or 1000 กม 40% dicofol.
(3) embedded in anti-cold, stripping the dendrite skin, burning focus.