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An experiment was conducted during the kharif seasons of 2010 and 2011 at Krishi Nagar farm, Adhartal Department of Agronomy, JNKVV Jabalpur to study the physiological and yield responses of improved varieties of rice grown under different planting geometries and depths of planting in system of rice keeping in to maximize the production efficiency and monetary advantage in rice by adopting suitable planting geometry, varieties and depth of planting. The result revealed that the 30 cm × 30 cm planting geometry had superiority in NAR were significantly influenced by plant geometry. But the 20 cm × 20 cm planting geometry had superiority in various parameters viz; leaf area index, crop growth rate and relative growth rate were significantly in plant geometry. However, during 60–90 DAT growth stage, closer spacing recorded more NAR due to more number of tillers per meter square and leaves per unit area but all stages NAR increase with spacing. Rice variety MR-219 with shallow depth of planting (2.5 cm) was markedly superior in growth parameters viz., LAI, CGR, RGR and NAR under edaphic and climatic conditions.

Key words: Varieties, LAI, CGR, NAR, planting geometry, depth of planting and Rice