Effect of seed inoculation with Plant Growth Promoting Rhizobacteria (PGPR) on forage quality and yield of turnip (Brassica rapa L.) at the different values of nitrogen and phosphorus fertilizers

Document Type : Research Article

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Abstract

To investigate the effect of Azotobacter and Pseudomonas bacteria and different levels of nitrogen and phosphorus fertilizers on forage yield and quality of turnip (Brassica rapa L.), a field experiment was conducted at Rice Research Institute of Iran during 2012 growing season. The experiment was arranged base on randomized complete block design with 14 treatments and three replications. The experimental factors were including Azotobacter chroococcum strain 12 and Pseudomonas fluorescens strain 41 bacteria and four levels (0, 50, 75 and 100 percent of required nutrient) of nitrogen and phosphorus fertilizers. The highest amount of fresh and dry forage yield, quality characteristic in shoot and root of forage turnip obtained in integrated application of biofertilizers and chemical fertilizers, particularly, inoculation with A. chroococcum strain 12 + P. fluorescens strain 41 + 50% nitrogen and phosphorus fertilizer. Therefore, can provide to involve nitrogen and phosphorus of plant by integrated system of biofertilizers and 50% chemical fertilizer introduces as superior treatment and step to reduces chemical inputs consumption and realization of aims in sustainable agriculture.

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References

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