NGHIÊN CỨU VAI TRÒ, ĐẶC ĐIỂM SINH HỌC CỦA NHỆN LÔNG NHUNG (Eriophyes sp.) ĐỐI VỚI BỆNH CHỔI RỒNG TRÊN NHÃN

To sudy abundance of Long Nhung mite (Eriophyes sp.) on Tieu da bo longan variety was recorded from January to December, 2010. To study hosts of Long Nhung mite: Rambutan was recorded host of Eriophyes sp. in the Mekong Delta. Study on biology and ecology of Eriophyes sp. in longan tree in the Southern provinces: The result recorded that eggs was laid on upper surface of young leaves, pure white, and hatch into nymphs which similar to the adult, but smaller and paler, pure white, 39 circle abdomen, 2 pair legs, slow in move. Adult was pure white and dusk white (pure white adult was great number of hairs, there were 30 percent in population), there were two hair in end of a tail, 2 pair legs, quick in move. Adults infested near the veins of a leaf, on upper and above surface of leaves. The life cycle from egg to adult took 8-15 days.