Combined Inoculation of Arbuscular Mycorrhizal Fungi and Azotobacter Beneficial to Proralea corylifolia L.

The effect of Glomus macrocarpum, Glomus fasciculatum and Azotobactor Proralea corylifolia L. was studied in sterilized soil. Compared to un-inoculated plants, chlorophyll content, height, weight, number and area of leaves of plant and weight were maximum in plants inoculated with G. macrocarpum, G. fasciculatum and Azotobactor or with G. macrocarpum and G. fasciculatum or with only G. macrocarpum, or G. fasciculatum. The levels of ischolar_main colonization was higher in all AM inoculated plants. There was significant increases in (3.96%) and P (0.21%) in the plant treated with a combination of Glomus macrocarpum, Glomus fasciculatum and Azotobactor. The results clearly indicated that compared to individual inoculation, AM fungal species with Azotobactor used in combinations were more beneficial for much improved growth of onion.