Study on Effect of Plant Density and Nitrogen on Yield and Yield Components of Visia faba (Faba Bean)

In order to study on effect of plant density and nitrogen on yield and yield components of Visia faba (faba bean), the experimental design was implemented by randomized complete block with three replications at 2010- 2011 in Lahijan. The experimental factors were three plant density (25×25 cm, 35×35 cm and 45×45 cm) and four nitrogen fertilizer (0, 20, 40, 60 kg ha-1). In this experiment, features such as seed yield, weight of 100 seeds, the number of pod per plant and harvesting index were measured. The results showed that the effect of plant density and nitrogen were significant on seed yield but were not significant on weight of 100 seeds and the no. of pod per plant. The highest seed yield was obtained in 25×25 cm plant density. Also with increasing of N up to 60 kg ha-1, harvesting index increased. The interaction effect of plant density and nitrogen on seed yield was significant and 25×25 cm plant density and 40 kg ha-1 nitrogen had shown the most effective on seed yield. But the interaction effect of plant density and nitrogen on other features hadn’t significant.