Description: Efficient and economic utilization of green manure crops is crucial in sustainable agriculture. Field experiments were conducted to study the effect of nitrogen supply through chemical N fertilizer and green manures on grain yield and nitrogen loss and gain of wheat as subsequent crop. The experimental design was split plots, arranged in randomized complete block with three replications. Results showed that, green manure differences in dry matter and nitrogen translocation efficiencies were related to nitrogen and biomass accumulated in plant reserve parts at both anthesis and maturity