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ORYZA- An International Journal on Rice
Year : 2007, Volume : 44, Issue : 2
First page : ( 125) Last page : ( 129)
Print ISSN : 0474-7615.

Effect of integrated nutrient management on productivity and quality of basmati rice (Oryza sativa L.)

Saha Mithun, Mondal S.S., Acharya D., Saha Sanjoy

Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia-741252, West Bengal, India

Abstract

The effect of integrated nutrient management on aromatic rice var. basmati-370 was studied. Treatments included 100% recommended dose of fertilizer (RDF:80:40:40 NPK), 75% RDF, and 75% RDF in combination with pelleted form of organic manure (0.4 t ha-1), organic manure rich with humus (0.1 t ha-1), Karanja (Pongamia pinna) cake (0.6 t ha-1), neem seed powder (0.8 t ha-1), FYM (4.0 t ha-1) and crop residue (3.8 t ha-1). All the organic manures applied at the time of land preparation. Supply of inorganic sources of nutrient in conjunction with organic sources significantly increased grain yield (21.2–76.8%) over sole inorganic application. The highest grain yield of rice (2.83 t ha-1) registered under integrated use of 75% RDF + pelleted form of organic manure. It was closely followed by the grain yield (2.56 t ha-1) obtained with the application of 75% RDF + neem seed powder. However, sole chemical fertilizer addition produced lower grain yield (1.6 t ha-1) compared to combined use of organic and inorganic sources. Further considerable improvement in grain quality was recorded under the treatments of integrated nutrient supply. Uptake of N, P and K was improved up to 54.6, 72.3 and 28.3% respectively with the integrated use of organic and inorganic fertilizer compared to RDF. Under integrated nutrient management considerable build up of soil fertility status (N, P and K content) was observed. This furnished the possibility of replacing 25% RDF through pelleted form of organic manure or neem seed powder or FYM for sustainable production, improving quality and fertility build up of soil.

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Keywords

Integrated nutrient management, productivity, quality, uptake, soil fertility.

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