The present investigation was carried out to study the influence of various organic sources with and without chemical fertilizers on the productivity of transplanted rice and their residual effect on rabi castor. A field experiment was conducted during kharif and rabi seasons at Regional Rice Research Station, NAU (Tapi). The organic sources used were sugarcane trash, bio-compost, FYM and green manuring. The experimental design was a factorial RBD with total 10 treatments, including 2 fertilizer treatments. The organics were incorporated 1 week before transplanting paddy seedlings. Castor was grown without organics as well as chemical fertilizers. Plant growth and yield attributes were recorded significantly lower under no chemical fertilizer treatments. Applications of various organics influenced significantly the growth and yield attributes of paddy and also have residual effect on castor crop. Among the various organics applied bio-compost @ 20 t/ha recorded significantly higher plant height, and yield attributes followed by green manuring. The highest grain yield of paddy and castor was obtained with bio-compost application along with 75% of RDF, followed by green manuring and FYM application.