Abayomi, Y.A., Fadayomi, J.O., Babatola, J.O., and Tian G. (2001). Evaluation of selected legume cover crops for biomass production, dry season survival and soil fertility improvement in a moist savannah location in Nigeria. African Crop Science Journal 9 (4), 615-627.
 Alonso-Ayuso, M., Quemada, M., Vanclooster, M., Ruiz-Ramos M., Rodriguez, A. and Gabriel J.L. (2018). Assessing cover crop management under actual and climate change conditions. Science of the Total Environment 621: 1330-1341.
 Buchi, L., Wendling, M., Amosse, C., Necpalova, M. and Charles, L. (2018). Importance of cover crops in alleviating negative effects of reduced soil tillage and promoting soil fertility in a winter cropping system. Agriculture, Ecosystems and Environment 256: 92-104.
 Fatima, T, Teasdale, J.R., Bunce, J. and Mattoo, A.K. (2012). Tomato response to legume cover crop and nitrogen: differing enhancement patterns of fruit yield, photosynthesis and gene expression. Functional Plant Biology 39, 246-254 Doi 10.1071/FP11240.
 Garcia-Gonzalez, I., Hontoria, C., Gabriel, J.L., Alonso-Ayuso, M. and Quemada, M. (2018). Cover crops to mitigate soil degradation and enhance soil functionality in irrigated land. Geoderma 322: 81-88.
 Hoorman, J.J. (2009). Using cover crops to improve soil and water quality. Fact sheet, Ohio State University Extension, Lima, Ohio.
 Ile, E., Hamadina, N.K., Zufa, K. and Henst, J. (1996). Note on effect of Mucuna pruriens var utilis on the growth of maize (Zea mays) on arid soils in Southern Nigeria. Field Crop Research 18, 135-140.
 Kang, B.T. (1992). Potentials of legumes for soil fertility improvement in the humid and sub-humid tropics. In: Collaborative Group on Maize-based system Research (COMBS). 1992 Report on 2nd Workshop, Kumasi, Ghana. West African Farming System Research Network (WAFSR/RESPAO), Ibadan, Nigeria.
 Landricini, M.R., Galantini, J.A., Duval, M.E., and Capurro, J.E. (2019). Nitrogen balance in a plant-soil system under different cover crop-soybean cropping in Argentina. Applied Soil Ecology 133: 124-131.
 Mattoo, A.K. and Teasdale, J.R. (2010). Ecological and genetic systems underlying sustainable horticulture. Horticultural Reviews 37, 331-362.
 National Research Council (2010). Toward sustainable agricultural systems in the 21st Century. National Academic Press, Washington D.C.
 Ngome, A.F.E., Becker, M. and Mtei, K.M. (2011). Leguminous cover crops differentially affect maize yields in three contrasting soil types of Kakamega, Western Kenya. Journal of Agriculture and Rural Development in the Tropics and Subtropics 112 (1), 1-10.
 Smil, V. (1997). Global production and the nitrogen cycle. Scientific American 277, 76-81. Doi:10.1038/scientificamerican0797-76.
 Tarawali, G. (1991). Residual effect of Stylosanthes fodder banks on grain yields of maize. Tropical Grassland 25, 26-31.
 Tarawali, S.A. (1994). Evaluating selected forage legumes for livestock and crop production in the sub-humid zone of Nigeria. Australian Journal of Experimental Agriculture 35, 375-379.
 Trewavas, A. (2001). Urban myths of organic farming. Nature, 410, 409-410. Doi: 10.1038/35068639.