WASET
    Shaibu Baanni Azumah and  William Adzawla,  Effect of Urea Deep Placement Technology Adoption on the Production Frontier: Evidence from Irrigation Rice Farmers in the Northern Region of Ghana.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2017, vol. 124(4). 294 - 300
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10006884.