00861nam a2200181Ia 4500 CTU_138593 210402s9999 xx 000 0 und d 631.417 S683 Soil organic matter management for sustainable agriculture : A workshop help in Ubon Canberra Australia centre for international agricultural research 1995 Contents: Role of soil organic matter in sustainable agricultural systems; the role of mulches and terrecing in crop production and water soil and nutrient management; organic matter for mutrients and organic residues for rice; soil fertility management in the rainfed lowland environment fo the Lao. Agricultural chemistry,Nông hóa Tuyến Trung tâm Học liệu Trường Đại học Cần Thơ