TI Busari, et al. “Effect of Intercropping Madumbe (Colocasia Esculenta) and Rice (Oryza Sativa L.) on Yield and Land Productivity under Different Irrigation Water Management Techniques With Effluent Water”. Water SA, vol. 46, no. 2 April, Apr. 2020, doi:10.17159/wsa/2020.v46.i2.8235.