In order to study the effect of phosphate fertilizer (fertile2), phosphorus, and foliar application of nitrogen on yield and yield components of maize cultivar SC 704 in weather conditions of Kouhdasht an experiment in the spring and in the summer of 2011 in Baghazal village as a split plot with three replications was conducted. First Factor: spraying nitrogen at three levels (1: no spray (control) 2: Once spraying (tasseling stage) 3: Double spray (corn emergence stage and pollinated). The second factor was Fertilizers biological phosphate (fertile 2) at two levels: (1: use 2: disuse) and the third factor: chemical fertilizer phosphorus at two levels: (1: use full recommended 2 - ½ recommendations based on soil test). Nitrogen foliar application significantly increased seed yield, biological yield, corn diameter, corn length, numbers of seed and nitrogen content of seed yield. The highest seed yield obtained from twice spraying nitrogen, phosphorous fertilizer (fertilize 2), and 50% chemical phosphorus recommended (10307.11 kg/ ha). Mean comparison results indicated that there was significantly difference between the main factors in seed yield, biological yield, cob weight, TSW, seeds per corn and seeds nitrogen percent. In addition, there was not significant different in corn diameter about main and interaction effects.
