بررسی اثر پیش اندازی بر عملکرد و اجزای عملکرد در کشت مستقیم برنج

This experiment was performed to evaluate on effect of seed priming on yield and yield components in direct seeding of rice compared to transplanting in Rice Research Institute, Rasht, Iran in factorial experiment layout based on randomized complete block design with four replications in 2013 growing season. Experimental treatments were consisted of two rice cultivars (Khazar = V1, Hashemi = V2) and 9 treatments compared with transplanting method. The results of analysis of variance and comparison showed that there were significant differences in traits. The highest grain yield obtained in Khazar cultivar (4944 kg.ha-1) and Hashemi cultivar with 3668 kg.ha-1. Analysis of variance of grain yield showed no significant difference between treatments. The highest grain yield obtained in transplanting method (4702 kg.ha-1) and lowest grain yield obtained in salicylic acid treatment (3875kg.ha-1). Mean comparison showed that the highest grain yield obtained of Khazar cultivar in transplanting method (5254 kg.ha-1) and subsequent treatment was Control1; Khazar cultivar in direct seeded method (4982 kg.ha-1). The lowest grain yield obtained in Control2; Hashmi cultivar in direct seeded method (3412 kg.ha-1). According to the results of this experiment, the highest grain yield obtained direct seeded method (4702 kg.ha-1) and Control1 treatment in direct seeded method in Hashemi cultivar (4333 kg.ha-1 ) that were not significant differences. Therefore, considering the positive aspects of direct seeding, it could be considered as an alternative to transplanting method in future.