Performance of rice under integrated nutrient management in southern region of Tamil Nadu

Abstract

Field experiments were conducted at Agricultural Research Station, Thirupathisaram during rabi season of 2011-12 to study the effect of integrated nutrient management (INM) on rice under rice-rice-pulse cropping system. The treatments structure comprised viz., T1- Control (No manures/fertilizers), T2- Organic manuring (Sesbania aculeata @ 6.25 t ha-1), T3- Inorganic Fertilization (NPK @ 150:50:50 kg ha-1 for medium duration rice) and T4-Integrated Nutrient Management (Sesbania aculeata @ 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. Integrated Nutrient management significantly influenced the growth and yield. The results revealed that treatment receiving application of Sesbania aculeata @ 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.