2012 · 45 citations · 1 references
Abstract: N-fixing and P-solubilizing bacteria playing a significant role as a plant growth-promoting Rhizobacteria (PGPR) in diverse crops. In order to evaluate efficiency of PGPR plus nitrogen and phosphorous chemical fertilizers on yield of wheat (cv. N-80-19) a field experiment was arranged in split-split plots based on randomized complete block design with three replications. The main and sub plot consisting of phosphorous 1 1 (0, 25 and 50 kg ha) and nitrogen (0, 50 and 100 kg ha), respectively and sub sub-plot were considered PGPR at four levels (control, inoculation with nitrogen fixing bacteria (PFB), phosphate solubilizing bacteria (PSB) and dual inoculation with PFB and PSB). Results showed that application of biofertilizers could increase grain yield and harvest index as much as 46.6 and 48.8 % compared to control, respectively. Integrated treatments showed better performance in terms of grain number per spike, tiller number and shoot length by 35.57, 35.1 and 31.9% compared to separate treatments, respectively. Furthermore, biofertilizers significantly reduced P and N fertilizer application without any reduction in wheat yield related parameters. Generally, results of this study revealed that using of biofertilizers especially dual inoculation had effective and significant role in terms of all studied yield characteristics except spike length in given wheat cultivar.
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