An experiment was carried out in the years 2004-2007 to examine the value of post-harvest residues (including straw) of spring wheat, field pea, and spring wheat-field pea mixtures preceding winter triticale cultivation. The following parameters were determined at the first stage of the study, conducted in 2004-2006: previous crop post-harvest residues and straw weight, winter triticale grain yield and total nitrogen content in the grain. Field pea provided least residues and straw. By contrast, the spring wheat-field pea mixture with the 75 + 25% proportion of the respective components as well as spring wheat produced most straw. The post-harvest residues and straw of spring wheat-field pea mixtures contained an intermediate amount of macroelements compared with their components cultivated in pure stand. Spring wheat straw accumulated less macroelements, in particular nitrogen, calcium and magnesium, compared with the straw of both field pea and spring wheat-field pea mixtures.

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