Journal of Forest Science, 2004 (vol. 50), issue 8

Necrotic disease of beech in individual growth stages

I. Mihál, A. Cicák

J. For. Sci., 2004, 50(8):353-359 | DOI: 10.17221/4661-JFS  

The paper deals with the present state of necrotic disease of beech in the growth stages of self-seeding, advance growth, thicket, small pole stage, pole stage and maturing stand from four localities of Central and Eastern Slovakia. We found out that the self-seeding was affected by the necrotic disease to the least extent. The strongest negative changes in the necrotic disease measured in terms of its frequency were recorded in the stage of advance growth. In later stages the trend of negative changes in necrotic disease became more moderate and was accompanied by small fluctuations. The lowest degree of necrotic disease expressed by means of stem...

Progress of spreading Stereum sanguinolentum (Alb. et Schw.: Fr.) Fr. wound rot and its impact on the stability of spruce stands

P. Čermák, L. Jankovský, J. Glogar

J. For. Sci., 2004, 50(8):360-365 | DOI: 10.17221/4662-JFS  

In 2002-2003, we conducted a detailed inventory of bark stripping damage in Forest District (FD) Mořkov (Forest Enterprise Frýdek-Místek) and in Forest Range (FR) Proklest (Training Forest Enterprise Křtiny). In total, 3,988 trees were examined in FD Mořkov and 1,512 trees in FR Proklest; in detail, 52 and 38 sample trees in FD Mořkov and FR Proklest, respectively. The rot spread in stems in the Proklest RD by an average rate of 15.6 cm/year, in FD Mořkov by an average rate of 23.8 cm/year. The rate of the rot spread decreases with the increasing period of parasitizing. The stem length affected by the rot ranged most frequently between 2.5 and 4.5...

Influence of amphibolite powder and Silvamix fertiliser on Norway spruce plantation in conditions of air polluted mountains

I. Kuneš, V. Balcar, M. Čížek

J. For. Sci., 2004, 50(8):366-373 | DOI: 10.17221/4663-JFS  

The objective of the paper is to assess the effects of amphibolite powder (waste from a dust removing process in a rock pulveriser) and Silvamix slow release fertiliser on Norway spruce plantation in the harsh physical environment of the Jizerské hory Mts. The plantation characteristics such as mortality, annual height increment, stem base diameter, crown diameter and nutrient analyses are evaluated. A nine-year-long period of observation is summarised. The effects of both the forms of chemical amelioration seem to be positive and statistically significant. The benefits of the amelioration expressed in absolute figures have been easily observable until...

Utilisation of mathematical models and growth simulators for creating forest management plans and planning the tending felling

R. Šmudla

J. For. Sci., 2004, 50(8):374-381 | DOI: 10.17221/4664-JFS  

The paper describes modelling of forest development and its utilisation for forest management planning, specifically modelling of growth mensurational variables of the two main commercial species - spruce and beech. Further, utilisation of growth simulator SILVA 2.2 for modelling the tending felling is described, focusing on data collection and main outputs of the modelling. Researched methodology was applied to a sample forest near the Racková municipality, property of Kroměříž Municipal Forests.

Analysis of properties of boards for concrete formwork

J. Hrázský, P. Král

J. For. Sci., 2004, 50(8):382-398 | DOI: 10.17221/4665-JFS  

The paper summarizes results of the analysis of properties of large-area materials usable for the manufacture of concrete formwork and available on our market. The materials were compared from the viewpoint of physical and mechanical properties including economic evaluations. Materials were assessed manufactured by DOKA company dealing with the production of shuttering systems, viz. Doka 3-SO, Dokadur and Dokaplex. The materials were compared with following boards available on our market: bioboard Agrop, water-resistant (exterior) surface-treated plywood and oriented strandboard (OSB). Results of the paper consist in the comparison of cost/physical-mechanical...