Quantifying the Impact of Reduced Nitrogen Rates on Grain Yield and Nitrogen Use Efficiency in the Wheat and Rice Rotation System of the Yangtze River Region

Nitrogen (N) plays a vital role in plant growth; however, the yield response to N fertilizer is regularly declining major cropping systems due overuse and upper limit of yields. Heavy losses are also documented its excessive use rice-wheat rotation system, resulting low nitrogen-use efficiencies (NUE) environmental problems. Therefore, three-year field experiment was performed with different managements investigate impact reduced input rates this exhaustive system. Reducing application did not affect wheat rice yields significantly, only during second season slightly as compared higher treatments. Decreasing prior crop present crop, interactions both seasons (R × W) influence either crop. A reduction had considerable on dry matter production but demonstrated no effect season. The accumulation significantly by lowering rate application. In addition, NUE indices were influenced rates. conclusion, for crops can be lowered fertilization without any risk decline. Lowering increases effectively reduces losses, soil status maintained.