Seed yield and quality responses of oilseed crops to simulated nitrogen deposition: A meta‐analysis of field studies

Oilseed crops are widely planted and closely associated with human nutrition health. Globally, increased nitrogen (N) deposition has a significant impact on agricultural production; however, in-depth knowledge of oilseed crop yields quality is still lacking. Here, we performed global meta-analysis from 128 published papers 462 paired observations to evaluate the response yields, yield composition, protein, oil content simulated N deposition. The showed that significantly in dose-dependent duration-dependent manner. compositions were also changed by deposition, where pod numbers per plant (PNP) seed weights increased. Interestingly, our analysis identified PNP as key factor determining Additionally, form had no striking influence either or components, whereas differences sensitivity rape responses reflected species. In terms quality, although protein manner, there was negative content. Furthermore, this correlation between biomass under implies adverse effects caused dilution effect. Overall, results suggest discrete yield, This study ecological biological implications for facing