• S. RAMESH

A field experiment was conducted during samba season (September 2006 to January 2007) at experimental farm, Faculty of Agriculture, Annamalai University to study the influence of different sources of nitrogen on grain yield and economics of rice. The experiment was conducted in randomized block design and replicated thrice. The experiment comprised eight treatments includes absolute control (No fertilizer and no organic manure), recommended dose of fertilizer alone and graded dose of fertilizer nitrogen along with different organic manures viz., Green manure, Vermicompost and Pressmud . Use of different sources and combination sources of nitrogen had significant influence on yield attributes and yield of rice. The results of the experiment showed that application of 100% RDN along with vermicompost @ 5 tonnes ha-1 significantly recorded higher yield attributes, maximum grain and straw yield and higher gross return, net returns and return rupee-1 over other organic manure in combination with inorganic fertilizer which was followed by application of 75% RDN along with vermicompost @ 5 tonnes ha-1.

Rice, Recommended dose of Nitrogen, Vermicompost, Green manure and Pressmud gross return, net returns and return rupee

"INFLUENCE OF DIFFERENT SOURCES OF NITROGEN ON GRAIN YIELD AND ECONOMICS OF RICE (ORYZA SATIVA L.) UNDER CAUVERY DELTA REGION OF TAMIL NADU", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.2, Issue 10, page no.386-390, October-2015, Available :http://www.jetir.org/papers/JETIR1701097.pdf

"INFLUENCE OF DIFFERENT SOURCES OF NITROGEN ON GRAIN YIELD AND ECONOMICS OF RICE (ORYZA SATIVA L.) UNDER CAUVERY DELTA REGION OF TAMIL NADU", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.2, Issue 10, page no. pp386-390, October-2015, Available at : http://www.jetir.org/papers/JETIR1701097.pdf