Chaudhary, S. K., Rao, P., & Jha, P. K. (2008). Productivity and nutrient uptake of rice (Oryza sativa) varieties as affected by nitrogen levels under rainfed lowland ecosystem*. The Indian Journal of Agricultural Sciences, 78(5). https://epubs.icar.org.in/index.php/IJAgS/article/view/9798