RESUME
COMPARISON OF PRODUCTION PARAMETERS OF EVEN-AGED AND SINGLE TREE SELECTION FOREST STANDS IN CZECH CONDITIONS
Vilém Podrázský, Keith Moser
Article summarises results concerning the production potential of particular regeneration methods, i.e. of single tree selection system and even-aged systems. Results confirmed production advantages of the uneven-aged systems, consisting in better exploitation of the growth potential of particular sites in most Czech conditions. There is an evidence, that it is possible to increase the productivity of forest stands even more, using appropriately the sources of ecosystem primary production.
THE FIRST RECORD ABOUT CRYPHONECTRIA PARASITICA (MURILL) BARR. IN THE CZECH REPUBLIC
L. Jankovský, P. Haltofová, D. Palovčíková
The introduced European chestnut is widespread in the Czech Republic at present. According to the Czech law on the State Phytosanitary Service there arises exigency to on monitor European chestnut health from the point of view of presence some quarantine pest Cryphonectria parasitica, already known from the neighbour countries - Slovakia, Hungary, Austria. The first record about distribution of chestnut blight caused by Cryphonectria parasitica comes from town Uherský Brod situated in South Moravia near the border on the Slovak Republic. The chestnut blight was observed on a 27-years old chestnut originating from the Slovak Republic. This is only one infected tree from the set of more than 400 analysed chestnuts originating from 145 localities. Also agents of ink disease Phytophthora cambivora (Petri) Buism. were observed in Czechia. There was observed a wide rank of wood decaying fungi in the chestnut - Laetiporus sulphureus, Phellinus robustus, Fistulina hepatica, Stereum hirsutum, Stereum rugosum, Vuilleminia comedens etc. On the roots and also on the bases of stems there were observed honey fungi Armillaria gallica and Armillaria ostoyae. The Mycosphaerella maculiformis (Pers.) Schroetas was observed as the most common pathogen causing leaf spots. The powdery mildew caused by Microsphaerea alphitoides Griff. et Maubl. was observed on the leaves as well.