A field experiment was conducted during Kharif season of 2003 and 2004 at agricultural research farm of Shri Durga Ji Post Graduate College Chandeshwar, Azamgarh-276128 (UP) with a view to find out the effect of soil conditoners and different levels of fertilizer on maize. Results revealed that the growth parameters viz., plant height, fresh weight, dry weight at knee and tasseling stages were significantly maximum with FYM application. Yield parameters and yield were recorded significantly maximum with FYM, application followed by gypsum and minimum in control during experimental year. Application of 125% RDF produced significantly better growth parameter like plant height, fresh and dry weight at knee and tasseling stages than 75 and 50% RDF and at par to 100% RDF. Yield parameters and yield of maize were decreased with reducing doses of fertilizers during both the years. Application of FYM@ 5t/ha proved to be superior over gypsum as the productivity (35.53, 36.49 q/ha) was higher than gypsum (32.51, 33.02 q/ha and control (31.21, 31.91 q/ha) respective year respectively. The highest productivity of maize was obtained with application of 125% RDF followed by 100% RDF 36.40, 36.88 q/ha and 34.87, 34.98 q/ha maize production, respectively.