Báo cáo lâm nghiệp: "The survey of some factors affecting bark lesion development caused by Phytophthora cactorum on common beech and other broadleaved trees" pdf

... inoculation of Ips typographus (L., 1758) to spruce trees under various levels of water stress M. T, O. N Faculty of Forestry and Wood Sciences, Czech University of Life Sciences ... Republic ABSTRACT: Manipulated experiments with males of Ips typographus (L., 1758) were conducted in spruce stands in north-western Slovakia. Some...

Ngày tải lên: 07/08/2014, 03:22

... of irradiation on the behaviour and reproduction success of eight toothed bark beetle Ips typographus (Coleoptera: Scolytidae) M. T 1 , J. V 2 1 Faculty of Forestry and Wood Sciences, ... Slovakia ABSTRACT: Irradiation experiments on Ips typographus (L., 1758) with doses of 15 and 30 Gy (cobalt 60) were con- ducted in 2006. e effect...

Ngày tải lên: 07/08/2014, 03:22

... was used in part as liquid with sand (25 cm 3 sand + 20 ml solution), in part reinforced by heating 6g of agar in a 1 l medium. Cultures were incubated for 6 weeks with a daily lighting period ... substances. White silica sand marked PR 21 from the sandpit Provodín near Česká Lípa (http://www.pisky.cz) was used in laboratories of the North-Bohemian Museum in Libere...

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... were observed mainly in regions exposed to the heavy deposition e effect of point application of fertilizers on the soil environment of spread line windrows in the Krušné hory Mts. D. V 1 , ... scarification the top -soil horizons were moved into line windrows, which caused marked degradation of the soil environment. e present revita...

Ngày tải lên: 07/08/2014, 03:22

... of biotic hazard zones in three spruce dominated regions in Slo- vakia; (3) Proposal of zone-specific forest protection mea- sures. Study regions ree regions with different kind of spruce decline ... Descriptive statistics of data on accidental felling of spruce (m 3 of felled volume) used for the proposal of biotic hazard zones in three inves...

Ngày tải lên: 07/08/2014, 03:22

... information on the given problems. Energy requirements were assessed on the basis of measurement and evaluation of electric input e influence of selected factors on energy requirements for plain ... of selected factors of energy require- ments at plain milling of beech wood on cutting input as well as on basic technological parameters v c...

Ngày tải lên: 07/08/2014, 03:22

... System. e response of weevil communities (Coleoptera: Curculionoidea) to the altitudinal zones of beech stands J. B Faculty of Forestry and Wood Technology, Mendel University of Agriculture ... is impossible to define the outline of the occurrence of the found spe- cies. Many faunal researches suggest the possibility of the occurrence of...

Ngày tải lên: 07/08/2014, 03:22

... importance of the passive transfer of uropo- dine mites assisted by H. cunicularius cannot be overlooked in mountain spruce forests in the Tatra Mountains and, possibly in other mountain areas in ... e role of Hylastes cunicularius Erichson (Coleoptera: Scolytidae) in transferring uropodine mites in a mountain spruce forest B. K,...

Ngày tải lên: 07/08/2014, 03:22

... In 1949, the Supported by the Ministry of Education, Youth and Sports of the Czech Republic, Projects No. VaV-SM/6/153/05 and MSM 6293359101. e evolution of natural floodplain forests in South ... relevés. The increasing trend in the number of recorded species may, however, also mean the movement of some of the ecologi- cal factors. In the case of floodpl...

Ngày tải lên: 07/08/2014, 03:22

... activity of the F. sanguinea ants depending on the quantity of light incident upon the soil surface Fig. 14. GLM of the occurrence of the F. sanguinea ants depend- ing on the quantity of undergrowth ... activity of the F. pratensis ants depending on the quantity of light incident upon the soil surface Fig. 10. GLM of the occurrence of the F. pratensis...

Ngày tải lên: 07/08/2014, 10:21

... monitoring of forest conditions after liming is required. ere exist a lot of data on the liming effect on the soil chemistry changes but data on the liming effect on the mineral nutrition of ... observation Supported by the Ministry of Education, Youth and Sports of the Czech Republic, Project No. MSM 6215648902. e effect of liming on the min...

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... test). RESULTS AND DISCUSSION Confirmation of flooding and P. alni infection effects on black alder e analysis of covariance confirmed that the both factors (flooding and P. alni infection) and their ... condition was Table 1. e effect of long-term flooding and Phytophthora alni infection on the development of black alder saplings Treatment per valid N L...

Ngày tải lên: 07/08/2014, 10:21

... be- tween the region of Jablunkov Pass and the rest of A survey of forest pollution with heavy metals in the Natural Forest Region (NFR) Moravskoslezské Beskydy with particular attention to Jablunkov ... detected in the area of the Jablunkov Pass in comparison with the remaining area of NFR. e spatial distinctness of...

Ngày tải lên: 07/08/2014, 10:21

... reaction Nutrients 0.3 –0.6 –1.0 1.0 Fig. 2. Relation between the proportion of Picea abies and other variables including EIV (CCA with the proportion of Picea abies as the only environmental ... based on comparing the composition of herb species within three groups of relevés. e groups are created with reference to the proportion of Picea abies in tree...

Ngày tải lên: 07/08/2014, 10:21

... Czech Republic, Project No. QH71273. e survey of some factors affecting bark lesion development caused by Phytophthora cactorum on common beech and other broadleaved trees V. H, K. Č, ... Extent of bark lesions caused by P. cactorum isolates Nos P066.07, P078.07 and P100.07 on syca- more, beech, alder, lime, ash and oak saplings Fig....

Ngày tải lên: 07/08/2014, 10:21