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Asadu, C.Diels, J.Vanlauwe, Bernard[A comparison of the contributions of clay, silt and organic matter to the effective CEC of soils of subSaharan Africa]A comparison of the contributions of clay, silt and organic matter to the effective CEC of soils of subSaharan Africa

Micronutrients content in a cleared forestland continuously cropped for seven years with cassava, maize, pigeon pea and their combinations and subsequently fallowed for eight years were monitored in this study in order to determine the availability of these nutrients after these years. Soil sampl...


Asadu, C.Chibuike, G.Dixon, A.[Micronutrients availability in a cleared forestland after seven years of continuous cultivation and eight years of natural fallow in an Alfisol, eastern Nigeria]Micronutrients availability in a cleared forestland after seven years of continuous cultivation and eight years of natural fallow in an Alfisol, eastern Nigeria

The contributions of soil variables to the variations in the yields of cassava (Manihot esculenta), yam (Dioscorea rotundata), maize (Zea mays) and pigeon pea (Cajanus cajan) were evaluated over 2 years in this study. The data were from three replicates of two randomized complete block design exp...


Asadu, C.Dixon, A.Okechukwu, R.[Comparative evaluation of the contributions of soil physicochemical properties to variations in the yields of four major staple food crops in eastern Nigeria]Comparative evaluation of the contributions of soil physicochemical properties to variations in the yields of four major staple food crops in eastern Nigeria

The soils of major cassava-growing areas of Nigeria were sampled at 0-20 and 20-40 depths in 1991. The objectives were to compare the nutrient levels in both cassava fields and other arable crop fields and relate their nutrient levels to possible factors that affect them. Approximately 470 sample...


Asadu, C.Nweke, F.[Impact of agroecology on soil fertility status and cassava yield in Nigeria: 1: nutrient levels in soils growing cassava]Impact of agroecology on soil fertility status and cassava yield in Nigeria: 1: nutrient levels in soils growing cassava

A research farm at University of Nigeria, Nsukka, Nigeria, which was under cultivation for >25years before it was fallowed for 8 years, was cleared in 1998 and grown to three common crop mixtures for 4 years. The aim was to assess the performance of the ...


Asadu, C.Dixon, A.[Soil nutrient and cassava yield variations under continuous cultivation of three crop mixtures in southeastern Nigeria]Soil nutrient and cassava yield variations under continuous cultivation of three crop mixtures in southeastern Nigeria

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