Effect of bio fertilizers (Mycorrhiza and Azotobacter) on yield and agronomic characteristics of different varieties of wheat

This experiment conducted in factorial form as randomized complete block design with four replications. The first, second and third factors included mycorrhizal inoculation (inoculation with and without Glomus introduces), Azotobacter inoculation (with and without Azotobacter chroococcum) and wheat cultivars (sardari, koohdasht and karim) respectively. Result indicated that the effect of cultivar was significant on all agronomic traits. The main effect of mycorrhizal and azotobacter was significant on all agronomic traits except for plant height. The effect of the two- Fold interaction of Azotobacter x cultivar was significant on the number of grains per spike, number of spikes and biological yield. The effect of the two- Fold interactions of Mycorrhizal x cultivars and Azotobacter x mycorrhizal was significant on the grain yield. The effect of the tow- Fold interaction of Azotobacter x mycorrhizal x cultivar was significant on the plant height and the number of spikes. The highest mycorrhizal dependent percent and mycorrhizal response percent in Azotobacter x cultivar karim inoculated treatment. The highest grain yield obtained in mycorrhzal karim cultivar inoculated (2264.5 kg/ha). Generally it can be concluded that inoculating karim cultivar with mycorrhiza showed the maximum yield under dry land farming conditions of khorramabad.