Author(s): P. K. P ATRA AND C. BHATTACHARYYA

Abstract: A field experiment was conducted for two consecutive years in the Red and Laterite Zone of West Bengal to evaluate the efficacy of three sources of organic manure viz., rice straw, sesbania top and gliricidia leaves, with and. without nitrogenous fertilizer on growth and yield of two varieties ofrice viz., IR-36 and CN-907-6-2.Gliricidia leaves alone and in combination with fertilizer N produced the highest rice grain yield. For sustainable rice productivity, application oforganic residues will play a very significant role in the Red and Laterite zone soil of West Bengal where the inherent soil organic matter content of the soil is very low. Gliricidia plants could be very well grown on the bunds of the rice fields and the green leaves collected from these plants may be directly applied to the rice fields 2-3 weeks before transplanting of seedlings.

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