Kamoni, P, M.W Mburu, and C.K Gachene. “Influence of Irrigation and Nitrogen Fertiliser on Maize Growth, Nitrogen”. East African Agricultural and Forestry Journal 69, no. 1&2 (September 8, 2008). Accessed February 27, 2024. https://www.kalro.org/www.eaafj.or.ke/index.php/path/article/view/53.