Agbede, T., Adekiya, A., & Ogeh, J. (2013). Effects of <i>Chromolaena</i> and <i>Tithonia</i> Mulches on Soil Properties, Leaf Nutrient Composition, Growth and Yam Yield. West African Journal of Applied Ecology, 21(1), 15–30. https://doi.org/10.4314/wajae.v21i1.