A.K. PADHl and B.K. SAHOO (2001) “ Effect of sowing date and nitrogen levels on growth, yield attributes, yield and nitrogen-use efficiency of niger (Guizotia abyssinica) under rainfed condition”, Indian Journal of Agronomy, 44(1), p. 44_1 . doi:10.59797/ija.v44i1.3482.