Field experiments were conducted in farmers field at kuttalam to evaluate the organics and mineral nitrogen (100%N) on nutrient uptake and yield of rice in clay loam soil in rice – rice- pulse cropping sequence. The treatments consisted of organics viz., composted coir pith (CCP), green manures (GM), sugarcane trash compost (STC), vermi compost (VC), poultry manure (PM) and FYM applied (100%N) and combination of above organics with urea@50%N besides 100% RDN as urea and control in first rice crop. The residual effect of above organics were studied in subsequent rice crop with application of fertilizer nitrogen (100%N). Residual effect of organics and fertilizer nitrogen were studied in rice fallow blackgram in two years. The test crop were rice var. ADT 43 (kharif), ADT 38 (rabi) and ADT 3 blackgram. The results revealed that integrated use of organics or residual organics and urea alone or both recorded highest nutrients uptake and yield in rice – rice – pulse cropping sequence over control. Application of vermicompost (50%N) with mineral nitrogen (T11) recorded highest nutrient uptake viz., N (49.6, 49.9 kg ha-1), P (15.6, 11.3 kg ha-1) and K (26.7, 49.6 kg ha-1) and application of residual poultry manure with mineral nitrogen (100%) N (35.3, 26.3 kg ha-1), P (11.7, 8.31 kg ha-1) and K (19.7, 36.3 kg ha-1 in grain and straw in kharif and rabi rice respectively. Application of residual poultry manure + fertilizer nitrogen recorded the highest nutrients uptake viz., N (38.8 kg ha-1), P (7.30 kg ha-1) and K (29.1 kg ha-1) in rice fallow black gram. Direct application of vermicompost and mineral nitrogen (50%N) recorded highest grain (5137 kg ha-1) and straw yield (7519 kg ha-1) and residual poultry manure in combination with fertilizer nitrogen (100%N) recorded highest grain (4341 kg ha-1) and straw yield (6926 kg ha-1) in rice-rice cropping sequence in two years. Residual organics and fertilizer nitrogen recorded highest pod yield (371.4, 1943 kg ha-1) in rice fallow blackgram in clay loam soils in two years. This study indicated the efficient organics and inorganics combinations to sustain soil fertility and productivity in rice based cropping system.