Response of rice (Oryza sativa) varieties to different levels of nitrogen under rainfed aerobic ecosystem
DOI:
https://doi.org/10.59797/ija.v59i1.4543Keywords:
Aerobic rice, Crop production, Nitrogen levels, varietiesAbstract
A field experiment was conducted during 2011 and 2012 at Jagdalpur on the response of rice ( Or yza 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 en- hanced 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.References
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