Zobrazeno 1 - 10
of 148
pro vyhledávání: '"I. Kupka"'
Autor:
S. Miltner, I. Kupka
Publikováno v:
Journal of Forest Science, Vol 62, Iss 4, Pp 145-152 (2016)
Northern red oak (Quercus rubra Linnaeus) is a promising species which could help to mitigate the sanitary problems. Northern red oak is also a commercial species and offers many environmental services. Northern red oak prefers rather dry acidic site
Externí odkaz:
https://doaj.org/article/cfa7b4dd19974ad1872ab73427935c80
Publikováno v:
Journal of Forest Science, Vol 61, Iss 9, Pp 399-405 (2015)
The objective of this work is to evaluate the effect of alginite on the growth parameters of seedlings of Douglas-fir, Scots pine and line mixture of pedunculate oak, red oak and Norway maple (broadleaves) on former agricultural land with an unfavour
Externí odkaz:
https://doaj.org/article/de1d50acfce14378afccedb56ebcdca4
Publikováno v:
Journal of Forest Science, Vol 61, Iss 8, Pp 325-331 (2015)
Seedlots of sycamore maple (Acer pseudoplatanus L.) originating from three different provenance regions were collected in autumn 2012. The seed quality, namely vitality and germination rate, was assessed according to Czech conventions. There were fou
Externí odkaz:
https://doaj.org/article/638efcd8a59b42d9b427d6c794199707
Publikováno v:
Journal of Forest Science, Vol 61, Iss 7, Pp 291-296 (2015)
The effect of different concentrations of brassinosteroids (1:10, 1:100, 1:210) on the germination of sycamore (Acer pseudoplatanus L.) and ash (Fraxinus excelsior L.) seeds was investigated in stress conditions. The product Lexin (a mixture of humic
Externí odkaz:
https://doaj.org/article/3afb309addf04f32b702a40bd9a735ea
Publikováno v:
Journal of Forest Science, Vol 60, Iss 5, Pp 212-217 (2014)
Sycamore (Acer pseudoplatanus L.) seeds are frequently used in forest nurseries and therefore the knowledge of their proper treatment is desirable. Seed stratification recommended by the Czech standard is two months but there are not many studies whi
Externí odkaz:
https://doaj.org/article/fdc55b8bf68b4ee5a4378ffc87ee462c
Publikováno v:
Journal of Forest Science, Vol 59, Iss 9, Pp 345-351 (2013)
Forest ecosystem and in particular forest soil biodiversity and stability could be jeopardised by the impropriate tree species composition. Douglas fir is a species which has a high potential in Europe both from economic and biodiversity aspects of f
Externí odkaz:
https://doaj.org/article/42e1c0a0e44a434992e5bf5b522bc73c
Publikováno v:
Journal of Forest Science, Vol 56, Iss 5, Pp 218-224 (2010)
Natural regeneration and its relationship to micro-relief and weed competition were studied on 6 research plots in mountain spruce forests in the Šumava Mountains. The data on density regeneration, total height and height increment of each seedling
Externí odkaz:
https://doaj.org/article/7deb06b07e6747b2830c52847fac1f91
Autor:
R. Stojecová, I. Kupka
Publikováno v:
Journal of Forest Science, Vol 55, Iss 6, Pp 264-269 (2009)
Wild cherry is one of the noble hardwood species that increase the biodiversity of our forests and at the same time it could increase the income for forest owners. The preconditions for achieving these goals are the high quality of stem and appropria
Externí odkaz:
https://doaj.org/article/d0899348027f4d6ab417d3e0f763e4f0
Autor:
M. Skrziszowski, I. Kupka
Publikováno v:
Journal of Forest Science, Vol 54, Iss 5, Pp 212-215 (2008)
The study analyses the growth of beech seedling fine roots and their development in the first five years. The research plots were established in 1997-2003 in community forests of Starý Plzenec (Western Bohemia, Czech Republic). The data are based on
Externí odkaz:
https://doaj.org/article/9f0452017d0f47a1b32aa10019ef6728
Autor:
I. Kupka
Publikováno v:
Journal of Forest Science, Vol 53, Iss 12, Pp 555-560 (2007)
A large crown is one of the most important prerequisites for the good growth of a tree and therefore the crown could be called an engine of increment. The care for a large crown brings a decrease in the bole value at the same time as it makes large b
Externí odkaz:
https://doaj.org/article/70f985c0d7fb422fa18f0baa84598b61