The present studies define the sugar-maize nitrogen requirements, delivered as pre-sowing fertilization or complementary foliar and soil nutrition. The usefulness of multiple fertilizers for sugar-maize top-dressing has also been defined. It has been shown that increase in pre-sowing nitrogen dose from 30 to 60 kg N·ha^-1 resulted in any significant yield increase in cobs neither with nor without covering leaves, nor did it increase the percentage of 1^st class cobs and their length, and the number of grains in a cob. However either top dressing or watering with 18 kg N·ha^-1 in the form of urea solution or else with multiple fertilizers, such as Florovit, Basfoliar 6-12-6, Basfoliar 36 Extra and Florogama K, increased the yield of cobs with and without covering leaves, yield of 1^st class cobs and the number of grains per cob.

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