A study on the effects of foliar feeding under different soil fertilization conditions on the yield structure and quality of common oat (Avena sativa L.)

Abstract

The present study was conducted based on a field experiment established on very acidic medium soil (silt loam). The experimental design included 4 soil fertilization treatments: O, NPK, NPK + MgSO4. 7H2O, NPK + CaO + MgO, and 3 foliar feeding treatments: O(H2O), Insol PK + 5% urea solution, Ekosol U. The test plant was the oat cultivar 'Kwant'. The aim of this study was to characterize in detail the response of oats to foliar feeding under the conditions of different soil fertilization with calcium and magnesium compounds. The experimental factors applied increased the yield parameters and differentiated the nutrient content in oat grain and straw. Soil fertilization had a greater effect on the quality parameters of primary yield than the foliar fertilizers used in the study. The best production and quality effects in growing oats were obtained after the application of MgSO4 and magnesium lime. Foliar feeding also affected beneficially the quantitative and qualitative characteristics of the yield. Among the fertilizers used, Insol PK showed a better effect than Ekosol U, in particular on the yield structure and the amino acid composition of proteins.