EFFECTS OF DIFFERENT RETRANSPLANTING DATES ON THE GROWTH, YIELD AND NUTRIENT CONTENTS OF LATE AMAN RICE CULTIVARS

Abstract

A field experiment was conducted to study the effect ot'4 transplanting and retranspianting dates (15. 22, 29 September and 06 October) on the growth, yield and nutrient content of two late T. aman rice varieties viz. BR22 and Bina-sail cultivars during July to December, 2013. The experiment was laid out in a RCBI) with three replications. Bina-sail gave significantly higher results such as plant height, panicle length and filled grain panicle than 81(22 except 1000grain weight. In case of N, P and K contents in shoot, BR22 gave significantly higher results than Bina-sail. Different transplanting and retransplanting dates had significant effects on growth and yield parameters and also on N, P and K contents in shoot of late T. Aman rice. The highest plant height, effective tillers hill', panicle length, spikeict and filled grain number panicle-', 1000-grain weight and grain yield were found in retransplanted on IS September. On the other hand, rctransplantcd on 06 October showed the lowest results in all cases except noneffective tillers hill' and unfilled grains panicle-1 where the results were vice-versa. N, P and K contents in shoots of late T. Aman rice significantly decreased in old seedlings with later dates of transplantation in case of both 8R22 and Bina-sail cultivars. The plant height, filled and unfilled grains panicle", 1000-grain weight and grain yield differed significantly due to the interaction effect of different retransplanting dates of late T. anian rice cultivars. The highest plant height, filled grains panicle'', panicle length, were obtained from Bina-sail which was planted on 15 September. The overall results suggest that farmers can be advised to transplant Bina-sail on 15 September as late aman variety for setting higher yield and nutrient contents under the agro-climatic condition of SAU.