CHOPRA, NISHA, N K CHOPRA, S N SINHA, and KHEM CHAND. “Effect of Weed Stress on Seed Yield and Quality of Onion (Allium cepa)*”. The Indian Journal of Agricultural Sciences 80, no. 1 (January 5, 2011). Accessed June 28, 2026. https://epubs.icar.org.in/index.php/IJAgS/article/view/2817.