Abstract
Summary Cabbage (Brassica oleracea var. capitata) and kohlrabi (Brassica oleracea Gongylodes group) take a very important place in vegetable farming around the world. Obtaining good-quality plants with minimal inputs is imperative in production. The experiment was set up in Sombor, on chernozem. The research analyzed the effect of 9 organic and mineral fertilizers (individually and in combinations), in the presence or absence of mulch, on the quality and the yield of cabbage (variety Adema) and kohlrabi (variety Volturno). The content of nitrates, nitrogen, phosphorus, and potassium were determined after harvesting. The highest yield was obtained by using pig manure + 500 kg NPK/ha and mulch in cabbage, and by applying the same treatment without mulch in kohlrabi. Cabbage and kohlrabi fertilized with beef manure in combination with NPK (300 and 500 kg/ha) had a lower concentration of nitrate than with other kinds of fertilizing. The combination of organic and mineral fertilizers gave the best result both in terms of quality (the content of nitrates, N, P) and yield.
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