1Scientist, Agronomy, S.G. College of Agriculture and Research Station, Indira Gandhi Krishi Vishwavidyalaya, Jagdalpur, Chhattisgarh-494 005
S.G. College of Agriculture and Research Station, Indira Gandhi Krishi Vishwavidyalaya, Jagdalpur, Chhattisgarh-494 005
*Corresponding author Email: adi_197753@rediffmail.com
Online published on 5 May, 2014.
A field experiment was conducted during 2011 and 2012 at Jagdalpur on the response of rice (Oryza sativa L) varieties to different levels of nitrogen. Plant height, leaf area-index, root volume and dry matter production were the highest with ‘Tulsi’ at 90 kg N/ha. Panicles/m2, filled grains/panicle, grain (4.50 tonnes/ha) and straw yield and nitrogen uptake by grain and straw were also significantly higher with ‘Tulsi’. Increasing levels of nitrogen enhanced panicles/m2, filled grains/panicle, grain and straw yield and nitrogen uptake by grain and straw only up to 90 kg N/ha. Varieties and nitrogen levels interacted significantly and the highest grain yield and economics were recorded with ‘Tulsi’ at 90 kg N/ha and it was found to be optimum combination for aerobic rice.
Aerobic rice, Crop production, Nitrogen levels, Varieties
