THE EFFECT OF PLANTING DATE ON YIELD AND YIELD COMPONENTS OF TWO RED BEAN CULTIVARS IN AZNA WEATHER CONDITIONS

In order to investigate the effect of different planting dates on yield and yield components of two red bean cultivars (Local and Sayad), a research was carried out in a research field in Azna in 2013. The experiment was conducted as split plots in the form of randomized complete block design with three replications. The main plot included four planting dates (May 20, May 31, June 10, June 20) and the sub plot included two red bean cultivars (Local and Sayad). The ANOVA results showed that delay in planting date decreased the yield and yield components (number of pods per plant, number of grains per pod, 1000-grain weight), so that the highest rate of yield and yield components belonged to the planting date of May 20 and the lowest rate belonged to June 20. Comparison of two cultivars (Local and Sayad) showed that the local cultivar had lower rate of yield and yield components than the Sayad cultivar. According to the research results, Sayad cultivar planted on May 20 had a good yield.