RAMAN JEET SINGH, LP.S. AHLAWAT, & B. GANGAIAH. (2001). Direct and residual effects of nitrogen management in Bt cotton (Gossypium hirsutum)-wheat (Triticum aestivum) cropping system. Indian Journal of Agronomy, 54(4), 401-408. https://doi.org/10.59797/ija.v54i4.4814