Associative Effect of the Rhizobacteria Streptomyces chibaensis and Commercial Biofertilizers on the Growth, Yield and Nutritional Value of Vicia faba

A pot experiment was carried out to investigate the effect of the commercial biofertilizers Biogen (B) and Potassiomage (PG) as well as the rhizobacteria Streptomyces chibaensis on the growth of faba bean (Vicia faba CV. Giza 843). The experiment was undertaken through two successive growing seasons (2008/09, 2009/10). In the first season, three different doses of each inoculant were used to select the profitable dose while in the second season; the co-inoculation by the three profitable doses was used as inoculant for faba bean seeds. Data presented as, growth, yield parameters, seed content of minerals (N, P and K), protein; vitamins (ascorbic acid, riboflavin and thiamin) and carbohydrates, were estimated by applying the co-inoculant of the three biofertilizers. The highest values of all these items were obtained from the application of the Biogen + S. chibaensis, followed by Potassiomage + S. chibaensis, which also showed a biological control activity against fungal diseases.