Correlation between fertilizer application, soil chemical properties and mineral nutrient contents in Forage Barley (Hordeum vulgare L.)

Fertilizer use in forage barley production has a strong correlation with both soil chemical properties and the mineral nutrient contents of the barley itself.However, there is still an incomplete understanding of the relative importance of different traits and how they interact to affect forage yield.We investigated 50 farms in Gyeongsang-do areas to assess correlations among fertilizer use, soil chemical properties, and nutrient uptake.The average fertilization rates for forage barley were N-P 2 O 5 -K 2 O = 18.9-4.1-10.4kg 10a -1 .Correlations were observed between NPK fertilization, soil organic matter, and the nutrient content of forage barley.The average rate of potassium fertilizer application showed a correlation with the nitrogen content and yield in forage barley.Soil EC, NO 3 -N and exchangeable K were correlated with the nitrogen and potassium contents in the forage barley.Based on these results, this study provides fertilizer recommendations for forage barley cultivation based on soil chemical properties and the nutrient uptake characteristics of the crop.By following these recommendations, farmers can contribute to the balanced management of soil nutrients and reduce excessive fertilizer input through the application of appropriate fertilizer rates.