The aim of the research was evaluation of the effect of agrotechnical level on the brewing quality of winter barley grain with the use of 3^5-2 (IV) fractional design. Quality parameters of malting barley malt and grain were subjected to analysis. The analysis of experimental features was based on the linear model. In case of rejecting the null hypothesis (H₀), multiple comparison test SNK was applied with the significance level P = 0.05. It was proved that quality parameters of winter barley malt are typical cultivar traits, which to a slight degree may be modified with the use of a different level of agricultural techniques. The only agrotechnical factor which significantly affected quality parameters of malt obtained from winter barley grain was nitrogen fertilization. Together with the increase of nitrogen fertilization level, extractivity and Kolbach index significantly deteriorated, while value of diastatic power improved.

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