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, plant height, harvest index, TSW, and number of seeds per corn. So spraying nitrogen significantly cause increased corn yield and yield components. The highest seed yield belong to double spraying nitrogen, phosphate fertilizer (fertile 2), and 50% phosphorous treatment (10307.11kg/ha). Mean comparison results indicated that between the main factors in the eyes of yield, biological yield, TSW, number of seeds per corn, there was a significant difference.
