Performance evaluation of rice varieties and their response to zinc nutrition in uplands.
Keywords:
Grain yield, Upland rice, Varieties, Zinc sulphate application.Abstract
The experiment was conducted during Kharif 2019 (May – August 2019) at Coconut Research Station, Balaramapuram in randomized block design with varieties as first factor and zinc sulphate application as second factor in three replications with an objective to evaluate the performance of varieties under uplands and their response to Zn nutrition. Among the varieties, Prathyasa (V3 ) recorded higher number of panicles m-2 and filled grains per panicle, but it was on par with APO 1 (V2 ). The yield was also the highest in V3 . Among the different method of Zn application, application of zinc sulphate application through seed priming and foliar application resulted in higher number of panicles m-2, filled grains per panicle and the lowest sterility percentage. The uptake of N was not significant among the varieties; however, P and K uptake were the highest for V3 . Amongst the method of application, S3 resulted in the highest N and Zn uptake, however, P and K uptake were the highest for S4 . Hence, it could be concluded from the results that Prathyasa was the best variety for uplands and among the method of application of zinc sulphate, seed priming of zinc sulphate (2 g kg-1seed) followed by foliar application of zinc sulphate (0.5%) at active tillering and panicle initiation was found the best.References
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