Document Type : Original Article


Faculty of Agriculture, Department of Agronomy, Roudehen Branch, Islamic Azad University, Roudehen , Iran


The main objective of this study was to determine the effects of plant growth promoter bacteria on biomass and yield of basil. The experiment was carried out as randomized complete blocks design with eight treatments and three replications at research field of Agriculture Company of Ran in Firouzkuh of iran in 2012 . The treatments were [1] Azotobacter chroococcum (A), [2] Azospirillum lipoferum (B), [3] Bacillus circulans (C), [4] A + B, [5] A + C, [6] B + C, [7] A + B + C and [8] control (without fertilizer application). The present results have shown that the highest dry weight of plant, herb fresh yield, herb dry yield and essential oil yield were obtained after applying each three bacteria (A + B + C). The maximum plant height was obtained by using two bacteria (A + B). Generally, the maximum herb dry yield and essential oil yield were obtained with the integrated application of each three bacteria.


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