Pokharel, B. B., Sharma, S. R., Pun, G. B., & Chhetri, N. S. (2016). Phosphorous as the major yield limiting nutrient for maize in the river basin areas of western Nepal. Journal of Maize Research and Development, 2(1), 100–108. https://doi.org/10.3126/jmrd.v2i1.16220