| dc.description.abstract | Abstract :
The experiment was conducted at the Bangladesh Rice Research Institute Farm,
Gazipur during Aman season. The traditional aromatic rice Kalijira, Kataribhog, Chinigura and Badshabhog were tested with 0, 25, 50, 75 and 100 kg N ha'1 to determine the optimum level of nitrogen and to find out the varieties having high yield potential. Thirty-day-old seedling was transplanted on 15 August spaced at 20 cm x 15 cm both in 1999 and 2000. The plant height, number of ullers hill'1, dry matter, number of panicles, panicle length, percentage of spikelet sterility and straw yield increased with the increase of nitrogen levels but the highest grain yield was obtained at 50-75 kg N ha'1. The tall plant and high biomass production at the higher level of nitrogen were prone to lodge and increased spikelet sterility or decreased grains panicle'1 resulting lower grain yield of rice. The intermediate tall Chinigura showed better crop growth and yield at the higher level of nitrogen (50 to 75 kg N ha'1) while the taller plant of Kalijira and Badshabhog responded well comparatively at lower level of nitrogen (25-50 kg N ha'1) in both the years. | en_US |
