Consideration twin use of Mycorrhiza and Azospirillum to optimizing of fertilizer application in sustainable corn cultivation

This research was done in order to find the symbiotic mycorrhiza funguses and Azospirillum bacteria as biologic fertilizer in different levels of chemical fertilizers phosphor and nitrogen on yield and yield component of corn. Experiments were done in factorial design based on RCBD with three replications when soil control condition. The treatments were selected as using chemical phosphor and nitrogen fertilizer in 3 levels (without nitrogen and phosphorus fertilizers), (nitrogen 100 kg/ha and phosphor 50 kg/ha) and (nitrogen 200 kg/ha and phosphor 100 kg/ha). The Azospirillum treatments were settled in 2 levels (The usage and non usage) and Mycorrhiza treatments in 2 levels (The usage and non usage). The results showed that yield and yield component of corn was effected by fertilizers treatment so that the Azospirillum can significantly effect on grain yield and kernel numbers of the corn. It didn’t have any effect on 1000 kernel weight but Mycorrhiza could have a positive effect on grain yield and 1000 kernel weight (sig. 1%). It has no meaningful effect on the kernel number. Results showed that by using average of chemical fertilizers, microorganism activities increases but with increased consumption of chemical fertilizers microorganism activities were faint. In this research any negative affect and Antagonism between microorganism was not observed so that it can be used both microorganism until range of 100 kg/ha nitrogen fertilizer and 50 kg/ha phosphor fertilizer without any effect on each other.