BHAGWAN SINGH, A.L. RAJPUTI, and RAM ADHAR SINGH. “Effect of Nitrogen and Row Spacing on Growth, Yield and Economics of Niger (Guizotia Abyssinica)”. Indian Journal of Agronomy 47, no. 4 (October 10, 2001): 47_4 . Accessed June 25, 2026. https://pub.isa-india.in/index.php/ija/article/view/3203.