Sinha MN, Rai RK. Forage-production potential of intensive crop rotation of cowpea (Vigna unguiculata) and sorghum (Sorghum bicolor) and its residual effect on oat (Avena sativa). Indian J Agri Sci. 2012;65(9). Accessed October 28, 2025. https://epubs.icar.org.in/index.php/IJAgS/article/view/19068