Effect of Seed Inoculation with Nitragin and Different Levels of Nitrogen Fertilizer on Yield and Yield Components of Corn

In order to study the effect of seed inoculation with Nitragin and different levels of nitrogen fertilizer on yield and yield components of corn (Zea mays L.) a factorial experiment based on randomized complete blocks design in three replications was performed at Islamic Azad University, the Tabriz branch. Treatments were 6 urea fertilizer levels (0, 30, 60, 90, 120, 150 kg/ha) and two levels of Nitragin (inoculated and non-inoculated seed). Results indicated that the highest number of seed per corn row and number of seed per plant were obtained from 120 kg/ha urea application. Using 150 and 120 kg/ha of urea resulted in seed yield of 10.7 and 10 T/ha respectively. Effect of Nitragin on grain yield of corn was significant. Inoculation of seed with Nitragin increased seed yield (9.50 T/ha) as compared with that of it can, thus, be concluded that bio-fertilization of corn seed by Nitrogin would improve yield similar to that of 120 kg/ha urea application.