D.K. DWIVEDI and S.S. THAKUR (2001) “ Production potential of wheat (Triticum aestivum) crop as influenced by residual organics, direct and residual fertility levels under rice (Oryza sativa)-wheat cropping system”, Indian Journal of Agronomy, 45(4), p. 45_4 . doi:10.59797/ija.v45i4.3426.