Studies were conducted in years 2005-2008 at the Production-Experimental Station in Bałcyny (53^o35’ N; 19^o51’ E). Research aimed at determining the effect of diversified sowing dates and densities on the yield and formation of yield components of winter triticale cultivar Moderato in the weather conditions of north-east Poland. In the described conditions, this cultivar has a very high yield potential. Average grain yield from three years was 8.91 Mg·ha^-1, and in a favourable year even 10.55 Mg·ha^-1. The highest grain yield was obtained when the sowing date was September 22^nd. Delay in the date by 10 days significantly decreased mostly the number of spikes per area. Increasing the sowing number from 300 to 500 grains per 1 m² did not diversify grain yield or any of its elements. Relation between the sowing date and density on grain yield was found but not on the particular yield components.

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