The effect of nitrogen management on radiation interception, grain yield and yield components of autumn sown oats

The poster presented a study examining how nitrogen management influenced radiation interception, grain yield, and yield components in autumn-sown oats. It explained that crop productivity depends on the interaction of genotype, environment, and management (GEM), and aimed to improve yield stability by optimizing these factors. Using a split-plot design with three oat varieties and nitrogen rates ranging from 0 to 240 kg/ha, the study measured radiation interception, yield components, and grain yield. The results (shown in the graphs and correlation diagram on page 1) indicated that grain yield increased with nitrogen application, reaching optimal levels around 170–176 kg/ha. Yield, grain number, and grain weight per panicle were strongly correlated, while radiation interception, especially at later growth stages, showed a strong relationship with yield. The study also found that increased nitrogen enhanced radiation capture mainly through larger leaf area rather than increased panicle number. Overall, the findings highlighted the importance of nitrogen management and canopy development in improving oat yield.