integrated application of biological and chemical fertilizers on bean (phaseolus vulgaris) under rasht climate conditions
نویسندگان
چکیده
this research, for lowering the use of chemical fertilizer, was carried out using combinations of 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) and 10 combinations of inoculated biological (rhizobium, pseudomonas, and bacillus) fertilizers together with chemical fertilizers. results showed that grain yield, biological yield, 100 grain weight, stem diameter, protein content and protein yield were significantly affected (p<0.01) by treatments. the mean comparisons showed that the highest amount of grain yield, biological yield, 100 grain weight, stem diameter were obtained from combination of bacillus and pseudomonas with proportions of chemical p fertilizer levels. these results suggest that the integrated application of phosphorus biofertilizers and chemical phosphorus fertilization could improve growth and nutrient uptake from soil; hence, it might be a good strategy for sustainable production. however, crops need chemical nitrogen which could not be replaced by rhizobium inoculation. overall, the results revealed that integrated biofertilizer and phosphorus fertilization are good choices for decreasing chemical fertilization application.
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عنوان ژورنال:
پژوهش های حبوبات ایرانجلد ۱۳۹۴، شماره ۱، صفحات ۲۱-۰
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