Research conducted during 2002–2004 on a light soil in the Wrocław region investigated the effects of sprinkling irrigation and three kinds of nitrogen fertilisers – CAN, Norwegian salpetre and Puławy salpetre – on the levels of protein and mineral components in the grain of brewing barley cv. Scarlett (the nitrogen rate was 68 kg ^. ha^-1 irrespective of fertiliser). It was found that the protein content of barley grain depended to the greatest extent on the weather conditions that varied between the vegetation seasons of the study years. In sprinkled treatments, grain contained significantly smaller amounts of nitrogen, calcium and protein than in non-irrigated treatments. The kind of nitrogen fertiliser did not produce any significant differences in the nitrogen, phosphorus, calcium or magnesium contents. Barley grain from treatments fertilised with Puławy saltpetre had a significantly higher sodium level.

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