Venugopalan MV, Deshmukh R, Hebbar KB, Tandulkar NR. Productivity and nitrogen-use efficiency yardsticks in conventional and Bt cotton hybrids on rainfed Vertisols. Indian J Agri Sci [Internet]. 2012 Jul. 11 [cited 2025 Oct. 20];82(7):641–4. Available from: http://epubs.icar.org.in/index.php/IJAgS/article/view/21694