About BAGGIE I
About Rokupr, Freetown Sierra Leone, AUT
About ZAPATA F
About FAO/IAEA Agriculture and Biotechnol., Lab., Seibersdorf
About SANGINGA N
About International Inst. Tropical Agriculture, Ibadan, NGA
About DANSO S K A
About Univ. Ghana, Accra, GHA
About Nutrient Cycling in Agroecosystems
About crop residue
About Albizzia zygia
About Fertilizer application and efficiency
About Rice cropping
About 窒素固定
About 有機物
About 残さ
About 酸性土壌