Abstract
An experiment was conducted to find out the effect of variety, date of transplanting and its interaction on the growth and yield performance of high yielding Boro rice. The experiment comprised five varieties viz., BRRI dhan28, BRRI dhan58, BRRI dhan67, BRRI dhan69, BRRI dhan74 and five dates of transplanting viz., 15 December, 30 December, 15 January, 30 January and 15 February. The experiment was laid out in a randomized complete block design with three replications. Results revealed that growth parameters, crop characters, yield components and yield were significantly influenced by variety, date of transplanting and their interactions. The leaf area index (LAI) and dry matter production hill-1 were highest in BRRI dhan69 when transplanted on 15 January whereas the lowest value was found in BRRI dhan28 when transplanted on 15 February. The number of effective tillers hill-1 (11.80), number of grains panicle-1 (130.90), 1000-grain weight (22.07 g), grain yield (4.96 t ha-1) and straw yield (6.64 t ha-1) were highest in BRRI dhan69 whereas corresponding lowest values were recorded in BRRI dhan28. The crop transplanted on 15 January produced the highest number of effective tillers hill-1 (12.81), highest number of grains panicle-1 (131.20), heaviest 1000-grain weight (21.93 g), highest grain yield (5.36 t ha-1) and highest straw yield (7.71 t ha-1). In case of interaction, the highest grain (5.90 t ha-1) and straw yields (7.87 t ha-1) were recorded in BRRI dhan69 transplanted on 15 January whereas the lowest grain and straw yields were recorded in BRRI dhan28 transplanted on 15 February. Therefore, it can be concluded that BRRI dhan69 along with 15 January transplanting appears as the promising combination in terms of grain and straw yields.
 J Bangladesh Agril Univ 17(3): 301–308, 2019
Highlights
Rice (Oryza sativa L.) is one of the most important cereal crops in the world
The highest grain (5.90 t ha-1) and straw yields (7.87 t ha-1) were recorded in BRRI dhan69 transplanted on 15 January whereas the lowest grain and straw yields were recorded in BRRI dhan28 transplanted on 15 February
It can be concluded that BRRI dhan69 along with 15 January transplanting appears as the promising combination in terms of grain and straw yields
Summary
Rice (Oryza sativa L.) is one of the most important cereal crops in the world. It is the principal food grain for the people of Bangladesh. High yielding varieties (HYV) are highly responsive to management practices such as water and fertilizer management and responsive to temperature during growth period It requires a particular temperature for its phenological processes such as panicle initiation; flowering, panicle exertions from flag leaf sheath and maturity, which are very much influenced by the transplanting dates. Yield of Boro rice as affected by transplanting date of late sown crop is invariably low due to reduction in field duration, poor plant stand and growth of the crop, more weed infestation and higher sterility percentage of grains. With this view in mind, the study was undertaken to evaluate the agronomic performance of five high yielding varieties of Boro rice to find out the suitable Boro rice variety and the optimum date of transplanting for high yield
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
