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(A) and body shape to identify hazards
The roots of the main hazards. After the roots of the victim, gives rise to tumor-like. Early for the bright yellow, to brown and after gradual decay to the ground plant leaves turn yellow, fruit small, weak trees, the output quality of despair, when whole-plant dead serious. Physical body and soft, and looks very much like aphids, but not abdominal tube belly.
(B) control methods
(1) of this pest is the international and domestic quarantine one of the important, from the suspicious area to buy seedlings, cuttings must be strict disinfection method is the root for a bunch of 10-20 in the 1500 กม 50% phoxim 1 minute of immersion. (2) Excluding the plant in time, burned down.