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The effects of co-inoculation of PGPR bacteria and Sinorhizobium meliloti on nutrient contents, plant growth and yield of alfalfa

Alireza Tavasolee, Kazem Khavazi, Ahmad Asgharzadeh, Hassan Monirifar, Saeid Ghassemi

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J. Bio. Env. Sci.15(5), 8-13, November 2019


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Two field experiments with factorial arrangement based on a randomized complete block design with three replications were conducted in 2013 and 2014 to evaluate the effects of co-inoculation of PGPR bacteria (control and mixed of azotobacter, azospirillum and pseudomonas inoculations) and Sinorhizobium meliloti (control, strain 1, strain 2, strain 3 and mixed of these strains) on nutrient contents, plant growth and yield of alfalfa (Medicago sativa). Results showed that application of PGPR bacteria enhanced nitrogen (N), phosphorus (P), manganese (Mn), zinc (Zn) and copper (Cu) contents of alfalfa in compared with control. Plant height, fresh and dry weight of forage in 2013 were significantly higher than 2014. PGPR treatment significantly increased plant height, number of branches, fresh and dry weight of forage of alfalfa compared with control.


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The effects of co-inoculation of PGPR bacteria and Sinorhizobium meliloti on nutrient contents, plant growth and yield of alfalfa

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