LAL, BRIJ; SINGH, DHYAN. Crop yield and uptake of potassium by maize (Zea mays), wheat (Triticum aestivum) and cowpea (Vigna unguiculata) fodder in relation to various potassium forms in soil under intensive cropping and continions fertilizer use*. The Indian Journal of Agricultural Sciences, Delhi, India, v. 68, n. 11, 2013. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/27778. Acesso em: 28 oct. 2025.