Abstract: An experiment was conducted to asses the integrated effect of organic manures and nitrogen on yield contributing characters and yield of rice (BRRI dhan29). The experiment consisted of 12 treatments, T1: Control condition (No chemical fertilizer, no organic manure); T2: 100% recommended N (120 kg N ha-1) + recommended P, K, S and Zn); T3: 100 kg N from urea + 20 kg N substituted by vermicompost (VC) + P, K, S and Zn; T4: 100 kg N from urea + 20 kg N substituted by cowdung (CD) + P, K, S and Zn; T5: 80 kg N from urea + 40 kg N substituted by VC + P, K, S and Zn; T6: 80 kg N from urea + 40 kg N substituted by CD + P, K, S and Zn; T7: 60 kg N from urea + 60 kg N substituted by VC + P, K, S and Zn; T8: 60 kg N from urea + 60 kg N substituted by CD + P, K, S and Zn; T9: 100 kg N from urea + 20 kg N substituted equally by VC and CD + P, K, S AND..