00981nam a2200229Ia 4500 CTU_138602 210402s9999 xx 000 0 und d 631.42 D563 Dierolf, Thomas Soil Fertility Kit : A toolkit for acid, Upland soil fertility management in Southeast Asia T.S Dierolf, T.H. Fairhurst, E.W. Mutert Indonesia Agency for Agricultural Human resources development 2001 Contents: The acid, upland soil farming environment in Southeast Asia; cyclical process and practical tools to improve soil fertility management in acid, uplan soils; principles and methods; essential information for extension workers. Phân bón và khuyến cáo bón phân NND604 Soil fertility,Thổ nhưỡng Trọng Hiếu Trung tâm Học liệu Trường Đại học Cần Thơ