KUMAR, R., LUIKHAM, E., BABU, S., & SINGH, A. K. (2017). Productivity, nutrient acquisition and economics of summer maize (Zea mays) under various levels of phosphorus and potash in valley land of Manipur. The Indian Journal of Agricultural Sciences, 87(11), 1572–1574. https://doi.org/10.56093/ijas.v87i11.75797