Shaibu Baanni Azumah and  Ignatius Tindjina and  Stella Obanyi and  Tara N. Wood,  Productivity Effect of Urea Deep Placement Technology: An Empirical Analysis 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.
    January 2017, vol. 123(3). 200 - 205
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10006451.