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One of the basic processes in ecosystems is the litter decomposition that performs nutrient cycling.
There are several factors effective on decomposition rate. The aim of the study was to determine the
variation in litter decomposition rates between pure and mixture litters and the effect of
antimicrobial features of litter on decomposition rates. We compared litter decomposition in Malus
domestica L. and Populus nigra L. leaves because of their antimicrobial activity. Litter bags were
used to examine the decomposition rate and the bags were placed in the same location and exposed
to same environmental conditions. The highest decomposition rate was obtained by P. nigra,
followed by M. domestica and their mixtures, respectively. We conclude that the differences in
decomposition rate between P. nigra and M. domestica may be caused by litter quality and
differences in their antimicrobial activity.
Keywords: Litter, decomposition, Malus domestica, Populus nigra, antimicrobial activity