Author(s):

N Senthil Kumar, S Suresh and M Paramasivan

Abstract: Field experiments were conducted at Agricultural Research Station, Thirupathisaram during <em>rabi </em>season of<em> </em>2011-12 to study the effect of integrated nutrient management (INM) on rice under rice-rice-pulse cropping system. The treatments structure comprised <em>viz.,</em> T₁- Control (No manures/fertilizers), T₂- Organic manuring (<em>Sesbania aculeata</em> @ 6.25 t ha^-1), T₃- Inorganic Fertilization (NPK @ 150:50:50 kg ha^-1 for medium duration rice) and T₄-Integrated Nutrient Management (<em>Sesbania aculeata</em> @ 6.25 t ha^-1 + NPK @ 150:50:50 kg ha^-1). Biometrics such as plant height, number of tillers hill^-1, number of panicles m-², number of grains panicle^-1, panicle length, grain yield and straw yield were recorded.<em> </em>Integrated Nutrient management significantly influenced the growth and yield. The results revealed that treatment receiving application of <em>Sesbania aculeata</em> @ 6.25 t ha^-1 + 150:50:50 kg NPK ha^-1 for medium duration rice TPS 3 recorded relatively higher growth, yield and economics than other treatments.

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