Effect of different transplanting dates and age of seedlings on the performance of rice variety RNR 15048 in Odisha

Abstract

A field experiment was conducted on RNR 15048 rice variety during Kharif (June-November) 2021 at Experimental Farm, M.S. Swaminathan School of Agriculture, Centurion University of technology and management, Paralakhemundi, Odisha on sandy loam soil with four dates of planting and three age of seedlings in split plot design with three replications. The treatments consisted of four dates of transplanting (29th July, 7th, 17th and 27th August, 2021) as main plot and three age of seedlings (35, 25 and 15 days old seedlings) as sub-plot. The grain and biological yield and the growth parameters (plant height, dry matter accumulation, leaf area index, and yield attributes - number of panicles, and number of spikelets and filled spikelets per panicle and panicle length) were significantly higher in the crop transplanted on 29th July over that observed with 7th August, 17th August and 27th August dates of transplanting. The extent of a reduction in grain yield with delayed plantings in 7th, 17th and 27th August was 12, 20 and 31% over that recorded in 29th July transplanted crop. The grain, straw and biological yield and number of spikelets and filled spikelets and panicle length did not vary differ significantly among crop transplanted with different aged seedlings. The experimental results suggested that, the RNR 15048 rice variety transplanted on 29th July, 2021 by using 25-day old seedling resulted in higher growth, yield and economics as compared to that planted late and using older or younger seedlings.