Abstract :
A field experiment was conducted in Sarbaz region, Iran, to study the response of three rice cultivars (Nemat, Neda & Dasht) to four transplanting dates (May 5, May 20, June 5 & June 19) in terms of number of reproductive tillers per plant , grains per panicles, panicles length, 1000-grain weight and grain yield. The experiment was conducted in a completely randomized block design with split-plot arrangement keeping transplanting dates in main-plots and varieties in subplots with four replications. Recommended production practices were carried out equally to all treatments through out the study period. Significant reduction in grain yield was observed in early transplanting on May 5. Maximum grain yield (6.25 t/ha) was obtained with June 20 transplanting date. Number of reproductive tillers per hill, grains per panicles, panicles length, 1000-grain weight and plant height were increased when transplanting date was delayed from June 5. Nemat cultivar in June 5 transplanting date recorded the highest grain yield, number of reproductive tillers per plant and 1000-grain weight.
