A field study was conducted to assess the interaction effects of irrigation and nitrogen rates on hybrid maize yield. The research was conducted during December 2013 to April 2014 at the farmer field Tabaria area of Natore District in Bangladesh. The experiment consists of (i) two irrigation treatments viz. no irrigation and three irrigation and (ii) two nitrogen levels viz. no nitrogen use and 230 kg Nha-1.The experiment was laid out in a split plot design with three replications having 12 unit plots with 20 m2 sized. The interaction effect of irrigations and nitrogen levels significantly influenced the yield attributes of BARI hybrid maize-7 except cob grain free and harvest index, where the yield and yield attributes increased with increasing irrigation and nitrogen levels in all cases.

Key words: Nitrogen, irrigation, yield, maize.