To access the influence of irrigation regimes during application of different levels of farmyards manure (0, 10 and 20 t ha-1), and foliar application of iron and zinc nano-nutrients on camelina, a field trial based on a split-split plot, was conducted in the Razan, Iran. This study utilized the treatment by trait biplot model, after significance of interactions, to assess the performance of camelina under varying micronutrient and water stress conditions, identifying the most effective treatments for improving seed yield and oil content including plant height, number of siliques per plant, seed number per silique, thousand seed weight, seed yield, harvest index, and oil percent. The biplot analysis explained 93% of the total variation, with the first two components describing for 75% and 18%. The results revealed that application of 20 t ha-1 farmyard manure with nano-zinc micronutrient under normal irrigation was the best-performing treatment for most yield-related traits. However, application of 10 t ha-1 farmyard manure with nano-zinc micronutrient under normal irrigation exhibited greater oil content from above mentioned outperformed treatment, indicating that nano-zinc applications with organic amendments enhance agronomic characteristics, oil content and yield performance. For oil content, application of 10 t ha-1 farmyard manure with nano-iron micronutrient under normal irrigation was the most effective treatment. The vector analysis further confirmed a positive correlation between seed yield and thousand seed weight, while height of plant indicated no relation with both seed yield and oil percentage. These findings underscore the agronomic benefits of nano-sized micronutrient fertilizers and their potential for sustainable and high-yield camelina production. Future research should explore long-term soil interactions and economic viability to further optimize nano-fertilizer applications in agriculture.
