A field experiment was conducted during the kharif season of 2004 in the farmer’s field at Mirjan village of Kumta taluk to study the effect of nutrients and bio fertilizers on nutrient uptake and residual fertility status in coastal alluvial soil of Karnataka. Various treatments imposed were RDF, 150 per cent RDF, bio fertilizers (Azospirillum and PSB) and ZnSO4 @ 25 kg ha-1. Results revealed that the application of 150 per cent RDF, bio fertilizers and ZnSO4 @ 25 kg ha-1 recorded the highest total uptake of N, P and K and Zn at all the stages of the crop growth. Residual N, P and K was also found to be the highest in this treatment. However, residual Zn was the highest in the treatment receiving RDF, bio fertilizers and ZnSO4 @ 25 kg ha-1.