Determining the Effects of Nitrogen Fertilizations with Irrigation on Yield, Yield Components and Nodulation in Bean (Phaseolus vulgaris L.)

In this research, the effects of nitrogen fertilizers given by irrigation in bean on yield, yield components and nodulation were examined. Trial was conducted as randomized complete block design with 3 replications as 12 plots, four different nitrogen fertilizer applications time were made. I. fertilizer application, all of the nitrogen (60 kg/ha) was at sowing time, II. fertilizer application, nitrogen is divided into two and at sowing time, during first irrigation (30 kg/ha N), III. fertilizer application, nitrogen is divided into three and at sowing time, and during first irrigation and second irrigation (20 kg/ha N), and IV. fertilizer application, nitrogen is divided into four and at sowing time, and during first irrigation, second irrigation and third irrigation (15 kg/ha N). According to obtained result of the research; the response of flowering time (days), first pod height (cm), biological yield (g/m2), 100 grain weight (g) and grain protein content (%) to nitrogen were statistically significant. IV. fertilizer application has significantly increased the biological yield (501.90 g/m2) and grain protein content (32.60%) in bean. II. fertilizer application and the highest nodosity number with 70.90/plant of nitrogen divided by two. But it was not significant differences as statistically. BNF (Biological Nitrogen Fixation) capacity of Phaseolus vulgaris L. is very low. It is essential to diagnose and correct application nitrogen to bean cultivation under irrigated conditions. Some significant results were obtained based on the our study but it needs more detailed research results for certanity.