The Effect of Application of Different Amounts of Urban Solid Compost on Growth and Yield of Mungbean

This study was conducted to examine the effect of different amounts application of urban compost on the growth and yield characteristics of vetch plants and rate of nitrogen, potassium, phosphorous and also organic matter in soil. In this experiment, five treatment of various amounts of compost (0, 15, 30, 45, 60 ton/ha) in the base of complete randomized blocks design with 3 replication in the research field of Abureyhan campus, University of Tehran. Results showed that the compost amount had a meaningful effect on the shoots dry weight, plant height, 1000-grain weight, the number of seeds in pod, protein and seed yields of Mungbean plant and rate of soil nitrogen, potassium and phosphorous. Based on the results between treatments, application of 60 tones of dry compost, which is the highest applied rate, resulted in the highest dry-weight in the shoots, plant height, 1000-grain weight, the number of seed in pod. The highest rate of protein yields was obtained in two 45 tons/ha and 60 tons/ha treatments respectively. Considering the fact that the increase in the amount of compost affects the rate of nitrogen, potassium and phosphorous in soil positively, one of the reasons for increase of yields and yield components in mungbean can be attributed to the improvement of nutritional conditions and increase in the soil physicochemical properties.