ANTIFUNGAL ACTIVITY OF NEEM OIL, CRUDE EXTRACTS AND PURIFIED AZADIRACHTIN OF NEEM (Azadirachta indica A.Juss) SEED KERNELS ON PHYTOPATHOGENIC FUNGUS Fusarium oxysporum - Dang Khanh, Vu; Van Do, Vu; Tien Thang, Nguyen (Science and Technology Development Journal, 2004)