Agricultural and Natural Resources Research Center of Chaharmahal and Bakhtiari Province, Shahrekord, Iran

In the second planting production areas, it can be increased farm efficiency with the second planting of common bean (Phaseolus vulgaris L.). In order to evaluate of the second planting possibility of common bean cultivars in Lordegan region, an experiment was conducted at the region in 2006-2007, using a randomized complete block design as split plot with three replications. Main plots were sowing dates (late of May, 26 June and 6 July) and subplots included cultivars (Sayyad, D81083, ARS-R93003 from red beans and Daneshkadeh, Jules and Emerson-74 from white beans). Results showed that delay in sowing date could reduce 100-seed weight, number of seeds per pod, number of pods per plant, plant height, and seed yield. Sayyad (red bean cultivar) and Daneshkadeh (white bean cultivar) had the most seed yield in each group at each sowing date, because of more pod per plant and seed per pod. In the first year, suiatable conditions were increased 100-seed weight, number of seeds per pod, number of pods per plant, plant height, and seed yield in common bean cultivars. Interaction between cultivars and sowing dates showed Daneshkadeh could be planted in the second planting only and other cultivars must be planted in the first sowing date.