عنوان مقاله [English]
In order to explore the possibility of reducing the consumption of nitrogen fertilizer using organic fertilizer on yield and yield components of cowpea, in 2012, was in Darreh shahr area. A factorial experiment in a randomized complete block design with three replications. The factorial experiment was done in a randomized complete block design with three replications. The first factor, which was at 3 levels of urea nitrogen, containing 0, 50 and 100 kg nitrogen per hectare, and the second factor was the biological fertilizer Nitroxin at 3 levels containing no inoculation, inoculation rate of 1 ml per 60 kg seeding and spraying a rate of 3 liters per ha. The results showed that grain protein seed inoculation with bio-fertilizer nitroxin to the 24.96 percent as compared to the treatment of non-application of 1 percent. The amount of protein obtained in application mode is also more than the treatment of the application and the difference between them was significant. The interaction of urea fertilizer and bio-fertilizer, respectively, the highest and the lowest yield in seeds inoculated with 50 kg of urea fertilizer and no fertilizer application biological fertilizer + no fertilizer urea in 2046 and 1336 kg per hectare, respectively. All levels of nitrogen in the highest and the lowest yield was in a state of inoculation and non-application. Generally the results showed that the use of biological fertilizers can be part of the nutrients needed by plants beans provided, Also, if Nitroxin with lower amounts of urea fertilizer consumption, improve and increase the quality and quantity can have an effective role.