Effect of row arrangement, age of tiller seedling and number of tiller seedlings per hill on performance of transplant aman rice

Abstract

The experiment was conducted to observe the effect of row arrangement, age of tiller seedlings and number of tiller seedlings hill -1 on the vegetative characters, yield and yield contributing characters of transplant aman rice. The experiment consisted of three levels of row arrangement viz. single row (row spacing 25cm), double row (row spacing 25-10-25cm)and triple row (row spacing 25-10-10-25cm), two types of tiller seedlings viz. 25 days and 35 days old; and three levels of number of tiller seedling hill -1 viz. 2, 4 and 6 seedlings hill -1 . The experiment was laid out in a three factor Randomized Complete Block Design with three replications. The highest plant height, number of effective tillers hill -1 , effectivity index of tillers, number of grains panicle -1 and harvest index were found in single row arrangement compared to double and triple row arrangements but number of total spikelets panicle -1 and grain yield were highest in double row arrangement. The highest number of non-bearing tillers hill -1 , number of total tillers hill -1 and number of sterile spikelets panicle -1 were found in triple row arrangement compared to single and double row arrangements. The highest plant height, effectivity index of tillers, number of grains panicle -1 , grain yield, harvest index and sterility percentage were found by transplanting 25-day old tiller seedlings. Number of total tillers hill -1 , non-bearing tillers hill -1 , straw yield and sterility percentage were highest by transplanting 35-day old tiller seedlings. Plant height, harvest index, grain yield and panicle length were highest when 2 tiller seedlings were transplanted hill -1 . Number of total tillers hill -1 and number of non-bearing tillers hill -1 were highest when 6 tiller seedlings were transplanted hill -1 .Transplanting in single and double row arrangements emerged out as a promising practice. This practice improved yield of transplant aman rice. Twenty five day old tiller seedlings was found to be suitable in respect of grain yield and 2 tiller seedlings hill -1 appeared to be enough for the cultivation of transplant aman rice. Key words: Row arrangement; tiller seedling; transplant aman rice DOI: http://dx.doi.org/10.4038/jas.v6i2.3860 The Journal of Agricultural Sciences , 2011, vol .6, no 2, pp59-68