اثر باکتری‌های محرک رشد یر عملکرد، اجزای عملکرد و سایر خصوصیات مهم زراعی ذرت

In order to study the effect of bio-fertilize at differ levels of nitrogen fertilizer on yield and agronomic traits in maize (Sc704), an experiment was conducted as split plot in randomized complete bock design with three replications in Payam-noor university of Kash in 2011-2002 cropping season . Four different levels of nitrogen fertilizer including zero, 25% (equivalent to 87/5 kg.ha-1), 50% (quivalent to 175 kg.ha-1) and 100% (quivalent to 350 kg.ha-1) were chosen as maim plot and bio-fertilzer including Azotobacter, Azospirillum and non- inoculation were assigned as sub plot. Results indiucated that niteogen feretilizer had more effective effect on studied traits. The highest and lowest plant height, the number of row per ear, the number of grain per row, ear. Plant-1, 1000-grains qweight, grain yield, bilogocalyield and grain protein were observed from 100% nitrogen fertilizer and non using teatmentm respectively. Also, usin bio-feretlizer had significantly effect on studied traits. Bio-fertilizer had positive effct on grai yield and yield component so that incresed yield up to 8.4% and 8.2% in Azotobacter and Azospirillum treatments to non- inoculation, respectively. The hiegst grai yield was observed fron bio tritments.