Ikeh, A.O., Amulu, L.U., Orji, .J.O. , Olufelo, O.J. and Umelo, Q.C. 2024. Land use efficiency of castor (Ricinus communis L.) based cropping systems in Okigwe, Southeastern Nigeria. Applied Research in Science and Technology . 3, 2 (Apr. 2024), 96–104. DOI:https://doi.org/10.33292/areste.v3i2.40.