01316nam a2200217Ia 4500 CTU_154113 210402s9999 xx 000 0 und d 122.51 631.41 D238 Daudu, Christogonus Organic matter sources, soil fertility and productivity : Evaluation of different sources of organic matter on soil fertilty and productivity Christogonus Daudu Germany VDM Verlag Dr. Muller 2008 Four organic materials namely cow dung, maize stover, M. pruriens vines and L. Leucocephala prunnings along with varying rates of inorganic fertilizer recommendation, were evaluated in the laboratory, the greenhouse and in the field for their impact on soil fertility and productivity in the Nigerian savanna, with maize as the test crop. Based on their nutrient concentrations and deduced ratios, cowdung, M pruriens vines and L. Leucocephala prunnings were characterized as high quality materials. Maize Stover may be considered as a low quality material. Principal component and correlation analysis confirmed this grouping of the organic materials. Soil fertility,Humus Bạch Trúc Trung tâm Học liệu Trường Đại học Cần Thơ