selected publications
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article
- Maize response to macronutrients and potential for profitability in sub-Saharan Africa. Nutrient Cycling in Agroecosystems. 105:171-181. 2016
- Overview of long term experiments in Africa 2012
- DOES CROP-LIVESTOCK INTEGRATION LEAD TO IMPROVED CROP PRODUCTION IN THE SAVANNA OF WEST AFRICA?. Experimental Agriculture. 46:439-455. 2010
- EFFECT OF ORGANIC AND INORGANIC SOIL AMENDMENTS ON SOIL PHYSICAL AND CHEMICAL PROPERTIES IN A WEST AFRICA SAVANNA AGROECOSYSTEM. Tropical and Subtropical Agroecosystems. 12:247-255. 2009
- Grain legume rotation benefits to maize in the northern Guinea savanna of Nigeria: fixed-nitrogen versus other rotation effects. Nutrient Cycling in Agroecosystems. 84:129-139. 2009
- Assessment of nutrient deficiencies in maize in nutrient omission trials and long-term field experiments in the West African Savanna. Plant and Soil. 314:143-157. 2009
- Effect of crop rotation and nitrogen fertilization on yield and nitrogen efficiency in maize in the northern Guinea savanna of Nigeria. African Journal of Agricultural Research. 4:913-921. 2009
- Rotation effects of grain legumes and fallow on maize yield, microbial biomass and chemical properties of an Alfisol in the Nigerian savanna. AGRICULTURE ECOSYSTEMS & ENVIRONMENT. 129:325-331. 2009
- Potential contribution of Lablab residues to maize production in moist savanna of West Africa. Journal of Sustainable Agriculture. 32:393-406. 2008
- Potential nutrient supply, nutrient utilization efficiencies, fertilizer recovery rates and maize yield in northern Nigeria. Nutrient Cycling in Agroecosystems. 80:161-172. 2008
- Potential of Lablab purpureus accessions for crop-livestock production in the West African savanna. JOURNAL OF AGRICULTURAL SCIENCE. 145:229-238. 2007
- Balanced Nutrient Management System Technologies In The Northern Guinea Savanna Of Nigeria: Validation And Perspective 2007
- Morpho-phenological variation in Lablab purpureus. Tropical Grasslands. 41:277-284. 2007
- Variability of cowpea breeding lines to low phosphorus tolerance and response to external application of Phosphorus 2007
- Grain legumes for soil productivity improvement in the Northern Guinea savanna of Nigeria. JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT. 2:218-226. 2004
- Fertility status of soils of the derived savanna and northern guinea savanna and response to major plant nutrients, as influenced by soil type and land use management. Nutrient Cycling in Agroecosystems. 62:139-150. 2002
- Maize Yield as Affected by Organic Inputs and Urea in the West African Moist Savanna. Agronomy Journal. 93:1191-1199. 2001
- Effects of different tillage and crop residue management systems on chemical properties of an Alfisol 1991
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document
- Residual benefits of soybeans genotypes and natural fallow to subsequent maize in the Northern Guinea Savanna of Nigeria 2007
- Balanced nutrient management system technologies in the northern Guinea savanna of Nigeria: validation, adaptation, and perspective 2004
- Evaluating options for soil organic carbon maintenance under intensive cropping in the West African savanna using the Rothamsted Carbon (RothC) model 2003
- Fertility status of soils of the derived savanna and northern guinea savanna benchmarks and response to major plant nutrients, as influenced by soil type and land use management 2002
- Direct interactions between N fertilizer and organic matter: evidence from trials with 15N-labeled fertilizer 2001
- On-farm evaluation of the contribution of sole and mixed applications of organic matter and urea to maize grain production in the savanna 2001
- Options for soil organic carbon maintenance under intensive cropping in the West African savanna 2001
- Recent developments in soil fertility management of maize-based systems: the role of legumes in N and P nutrition of maize in the moist savanna zone of West Africa 2000
- Contribution of soil fertility research/maintenance to improved maize production and productivity in sub-Saharan Africa 1999