ARYA, K C, and S N SINGH. “Productivity of Maize (Zea Mays) As Influenced by Different Levels of Phosphorus, Zinc and Irrigation”. The Indian Journal of Agricultural Sciences 71, no. 1 (April 16, 2014). Accessed October 21, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/39507.