اثر کاربرد توام کودهای زیستی و شیمیایی بر خصوصیات رشدی لوبیا ( .Phaseolus vulgaris L )

In order to decline use of chemical fertilizer, a study was carried out with integrated biological and chemical
fertilizer on bean in Rasht region in 2012 growing season. The experiment was conducted based on
randomized complete blocks design with 12 treatments and three replications. Experimental treatments
included: control (no fertilizers and no inoculants), chemical fertilizers [nitrogen and phosphorus fertilizers]
and 10 different combinations of inoculation with biological fertilizers (rhizobium, pseudomonas, and
bacillus) with chemical fertilizers. Results showed that the highest amount of grain yield, crop growth rate,
leaf area index and total dry weight were obtained from combination of bacillus and pseudomonas with
proportions of chemical P fertilizer levels. These results suggested that the integrated application of
phosphorus biofertilizers and chemical phosphorus fertilization can be improving growth and nutrient uptake
from soil. Finally, Results obtained from this study showed that integrated biofertilizer and phosphorus
fertilization for decrease chemical fertilization application was advantaged.