I. Alhassan and  A. M. Saddiq and  A. G. Gashua and  K. K. Gwio-Kura,  Effects of Irrigation Scheduling and Soil Management on Maize (Zea mays L.) Yield in Guinea Savannah Zone of Nigeria.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2017, vol. 126(6). 439 - 443
    [viewed 29 February 2020]. Available from: https://publications.waset.org/pdf/10007298.