VERMA, S K, and O P SHARMA. “Growth and Yield of Cotton (Gossypium Hirsutum) in Black Alkali Soils As Influenced by Method of Gypsum Application”. The Indian Journal of Agricultural Sciences 70, no. 11 (April 2, 2013). Accessed October 27, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/28727.