Optimizing nitrogen fertilizer input using fallow season precipitation for dryland winter wheat.

ABSTRACT: Precipitation is the major cause of yield variation in rainfed agriculture production on the Loess Plateau. Overfertilization is economically and environmentally undesirable. Optimizing nitrogen management based on fallow season precipitation is crucial for enhancing crop water use efficiency and achieving high yields in dryland/rainfed farming systems, considering the economic and environmental drawbacks of overfertilization and the uncertainty of crop yield and N input returns under high rainfall variability. Therefore, this study establishes a reference range that characterizes different wheat cultivation year types based on 37 years of fallow season precipitation data. The reference range for describing years as normal (220.7-346.2 mm), dry (< 220.7 mm), or wet (> 346.2 mm) is based on

SUBMITTER: Yu S 

PROVIDER: S-EPMC11842855 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature