مقايسه عملكرد ارقام برنج در كشت مستقيم و نشايي

The yield comparison of rice varieties in direct seeding and transplanting method

This study was carried out in 1996 in order to compare yield and other traits in rice cultivars under direct seeding and transplanting methods at Joneghan region of Chaharmahal and Bakhteyari province. Genotypes were composed of three selected lines (4 ,30 and 65) from local breeding populations, varieties 241RCTN90 and Gerdeh Joneghan local variety. In this investigation 2 factors were compared in a factorial experiment with 3 replications. One factor consisted of 5 lines and cultivars and another factor insisted of 2 planting methods. Planting time in both the direct seeding and transplanting methods were the same. Harvest time both in this experiment and in the region was also the same. Results indicated that all cultivars had lower yield than local variety under direct seeding method and their growing period could be not completed. The yield under transplanting was higher than direct seeding method in all of the cultivars. Line 65 showed the highest yield (5400kg/ha) under transplanting method. In direct seeding ,the performance of other traits was significantly less than transplanting method.