Using laboratory wood sample’s tests the ability for wood protection against wood decaying fungi of a group of systemic fungicides was tested. Five different fungicides were examined: Bayleton 25 WP, Benlate 50 WP, Falcon 460 EC, Preventol R 80 and Sarox T 500 FS. As testing fungi two species were used: Laetiporus sulphureus and Trametes versicolor. In the experiment four kinds of samples were tested: made of sapwood and heart-wood of common oak and of wood of external and internal parts of small-leaved lime stem. Among the tested fungicides Falcon 460 EC and Preventol R 80 appeared the most effective. In every case and variant of the experiment, samples protected by them were destroyed much slower as related to control samples. According to these results both Falcon 460 EC and Preventol R 80 seem to be useful in practical wood protection.

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