Studies on the Performance of Early Rice Cultivars on Farmer's Fields through On-farm Trial

摘要

An on-farm trial was conducted at farmer's fields during kharif 2008 and 2009 with 11 early rice cultivars and one locally adopted variety as control in order to identify the most superior high yielding cultivar for adoption in up and mid land ecosystem of Gopalganj district of Bihar. Ten yield and yield attributing traits, namely, days to 50% flowering, number of productive tillers per hill, plant height, number of total grains per panicle, number of fertile grains per panicle, panicle length, harvest index, number of spikelets per panicle and 1000-grain weight and grain yield were studied. The mean sum of squares due to genotypes was found to be highly significant in individual as well as in pooled analysis indicating that the cultivars were possessing inherent genetic differences with respect to all the characters. Three varieties, namely, Rajendra Bhagwati (51.10 q), Prabhat (49.90 q) and Gautam (47.70 q) showed significant and highest grain yield/ha as compared to local variety IR-36 (37.50 q)in pooled analysis. These cultivars matured 10-20 days earlier than the control. It was observed that the cultivars performed high yield also exhibited high mean values for most of the yield attributing traits. Based on the results, Rajendra Bhagwati, Prabhat and Gautam varieties are recommended to popularize for adoption in the district for higher yield, better profitability and early harvest of the crop.