Investigating the effects of nitrogen and phosphorus biofertilizers on morphological and physiological traits of red beans in Borujerd region

In order to investigate the effect of nitrogen and phosphorus biological fertilizers on the yield of red beans, a factorial experiment was conducted in the form of a randomized complete block design with replication in the agricultural year of 2012 in a farm located in Bravar region of Borojar city. The experimental treatments included the use of biological nitrogen fertilizers including  nitroxin and 2 special bean rhizobium fertilizers  nitro cara fertilizer  (control sample) was used. Phosphorous fertilizers including:  bio superphosphate  fertilizing 2.without fertilizer (control sample) were investigated. Based on the results of this research, it was determined that the mutual effect of the use of nitrogen and phosphorus biological fertilizers on plant height traits, the number of seeds per pod, as well as the simple effect of phosphorus biological fertilizer on the characteristics of the weight of one thousand seeds, the number of pods per plant, and the simple effect of nitrogen biological fertilizer on the characteristics of economic performance was significant at the 1% probability level. Also, the simple effect of phosphorus fertilizer was significant. Economic yield is significant at the 5% probability level. The simple effect of nitrogen and phosphorus and the mutual effects of fertilizers on the attributes of thousand-seed weight and the number of pods per plant are insignificant. The results of the comparison table of Duncan's mean show that in terms of grain yield, the highest yield of red bean seeds is related to fertilizer. Biological nitrogen level  (Nitro kara) is 634.2 kg/h, and also the highest number of seeds per pod and the number of pods per plant are related to biological nitrogen fertilizer level  (Nitro kara) is 7 seeds per pod and 19.33 pods per plant, respectively. In total, Nitro kara biological fertilizer had the most positive effect on the performance and performance components of beans, which can be used to prevent excessive use of chemical fertilizers and environmental problems caused by their use, while producing good and stable products.