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Tytuł:
Rębnia przerębowa w drzewostanach sosnowych
Selection-management in pine stands
Autorzy:
Andrzejczyk, T.
Powiązania:
https://bibliotekanauki.pl/articles/1018245.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
rebnie
rebnie przerebowe
lesnictwo
scots pine
pinus sylvestris
multi−generation
selection−cutting system
Opis:
This study presents the results on the structure and volume of many−aged pine stands in private forest holdings managed under semi−selection system. Their volume was ca 150 m3/ha and the basal area ca 20 m3/ha. Pine stands reveal all−age structure. The conditions of reaching the multi−generation pine stands is poor habitat where pine regeneration shows high competitive ability and density distribution of trees, including the occurrence of gaps and openings in stand overstorey ensuring proper conditions for the appearance and development of new regenerations of pine.
Źródło:
Sylwan; 2006, 150, 08; 52-60
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transpiracja drzewostanu i ewapotranspiracja ekosystemu sosnowego w powiązaniu z ewapotranspiracją potencjalną wyznaczoną różnymi metodami
Transpiration of a stand and evapotranspiration of Scots pine ecosystem in relation to the potential evapotranspiration estimated with different methods
Autorzy:
Boczoń, A.
Brandyk, A.
Wróbel, M.
Kowalska, A.
Powiązania:
https://bibliotekanauki.pl/articles/989724.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany sosnowe
transpiracja
ekosystemy lesne
ewapotranspiracja
ewapotranspiracja potencjalna
transpiration
actual evapotranspiration
potential evapotranspiration
scots pine
Opis:
The aim of the study was to estimate the transpiration (TR) and actual evapotranspiration (EVT) of Scots pine stand, i.e. a typical Polish forest ecosystem. The study was performed in the 74−year−old stand growing on poor sandy soil. Transpiration of pine trees was determined by sap flow measurements of some individual trees by Thermal Dissipation Probe method. Actual evapotranspiration was determined based on measurements of soil moisture using Time Domain Reflectometry method and on changes in soil water storage. Based on these results, the reduction ratios were determined to estimate TR and EVT from potential evapotranspiration (ETP) calculated according to Priestley−Taylor (PT), Hargreaves (H), Makkink (M), Penman (Pen org), Penman−Shuttleworth (Pen Shut), the FAO Penman Monteith (FAO PM) and Penman Monteith (PM) methods. Measured transpiration of Scots pine stand reached 56% of the actual evapotranspiration. The methods used for the calculation of the ETP can be ranked in terms of the results from the lowest to the highest: METP were calculated for transpiration in a Scots pine stand in Poland and equal: PT – 0.256, H – 0.490, M – 0.562, Pen org – 0.301, Pen Shut – 0.279, FAO PM – 0.318 and PM – 0.308. Reduction factors for actual evapotranspiration amount to: PT – 0.462, H – 0.872, M – 0.999, Pen org – 0.535, Pen Shut – 0.498, FAO PM – 0.565 and PM – 0.548.
Źródło:
Sylwan; 2015, 159, 08; 666-674
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biomasa aparatu asymilacyjnego w drzewostanach sosnowych zachodniej Polski
Biomass of assimilation apparatus in Scots pine stands of western Poland
Autorzy:
Bronisz, K.
Bronisz, A.
Zasada, M.
Bijak, S.
Wojtan, R.
Tomusiak, R.
Dudek, A.
Michalak, K.
Wróblewski, L.
Powiązania:
https://bibliotekanauki.pl/articles/1009587.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
Polska Zachodnia
sosna zwyczajna
lesnictwo
biomasa
aparat asymilacyjny
Pinus sylvestris
biomass
assimilation apparatus
empirical formulae
scots pine
Opis:
The paper presents empirical formulae for determination of dry and wet biomass of assimilation apparatus in Scots pine stands of western Poland. Analyzed equations were verified using relative percentage error. Influence of site conditions and different elements on accuracy of analyzed equations were also investigated.
Źródło:
Sylwan; 2009, 153, 11; 758-767
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ przygotowania gleby na zagęszczenie, wzrost i jakość samosiewów sosny w warunkach podokapowych
The effect of soil preparation on density, growth and quality of natural regeneration of pine under the canopy
Autorzy:
Andrzejczyk, T.
Drozdowski, S.
Szeligowski, H.
Powiązania:
https://bibliotekanauki.pl/articles/1026387.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
wzrost roslin
samosiewy
hodowla lasu
przygotowanie gleby
lesnictwo
odnowienia naturalne
odnowienia podokapowe
scots pine
natural regeneration
soil preparation
Opis:
The studies were conducted in the years of 1997−2001. The effect of four methods of soil preparation (ploughing with double mouldboard plough LPZ−75, disc plough PTL−2, disc harrowing and ridge formation) on natural regeneration of pine under the canopy shelter was analysed. Significant differences in the density, height and vitality of seedlings in the variant II (ploughing with disc plough) and variant IV (ridge formation) were found in the second and third year of studies. In the following years the differences between the variants were insignificant due to the heavy damage of seedlings caused by the cockchafer larvae. Neither of the methods applied protected the seedlings against this damage.
Źródło:
Sylwan; 2003, 147, 03; 19-27
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przestrzeń wzrostu sosny w 35-letnim drzewostanie na przykładzie wybranych miar przestrzeni wzrostu pojedynczego drzewa
Selected measures of the growth space of a single tree in a 35-years-old pine stand
Autorzy:
Kaźmierczak, K.
Powiązania:
https://bibliotekanauki.pl/articles/1006466.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
dendrometria
drzewostany sosnowe
drzewa lesne
sosna zwyczajna
Pinus sylvestris
przestrzen pojedynczego drzewa
przestrzen wzrostu
scots pine
crown
growth space
Opis:
The paper presents the results of an analysis of the characteristics of the growth space of a single tree in a 35−years−old pine stand. The following measures of the single tree growth space were selected and determined: crown projection area – pk [m²], crown diameter – dk[m], Seebach’s growth space number(also called the crown deflection degree) – dk/d1,3, crown projection area to basal area ratio – dk²/d1,3², single tree space – ppd=pk·h [m³], crown spread (crown deflection coefficient) – dk/h, and percentage use of a unit area – pwjp=100·pk/pj[%]. Analyses included the biosocial position of each tree.
Źródło:
Sylwan; 2012, 156, 04; 280-286
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kształtowanie się wybranych cech przestrzeni wzrostu pojedynczego drzewa w 50−letnim drzewostanie sosnowym
Selected measures of the growth space of a single tree in 50-years-old Scots pine stand
Autorzy:
Kaźmierczak, K.
Powiązania:
https://bibliotekanauki.pl/articles/1009200.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
dendrometria
drzewostany sosnowe
drzewa lesne
sosna zwyczajna
Pinus sylvestris
przestrzen pojedynczego drzewa
przestrzen wzrostu
growth space
crown
scots pine
Opis:
The paper presents the results of an analysis of the characteristics of the growth space of a single tree in a 50−years−old pine stand. The following measures of the single tree growth space were selected and determined: crown projection area – pk [m2], crown diameter – dk [m], Seebach's growth space number (also called the crown deflection degree) – dk/d1.3, crown projection area to basal area ratio – d2k/d21.3, single tree space – ppd=pk·h [m3], crown spread (crown deflection coefficient) – dk/h, and percentage use of a unit area – pwjp=100·pk/pj[%]. Analyses included the biosocial position of each tree.
Źródło:
Sylwan; 2010, 154, 04; 267-274
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Struktura cech biometrycznych podrostu bukowego (Fagus sylvatica L.) w przebudowywanym drzewostanie sosnowym (Pinus sylvestris L.)
Biometric structure of the beech (Fagus sylvatica L.) undergrowth in the reconstructed pine (Pinus sylvestris L.) forest stand
Autorzy:
Magnuski, K.
Jaszczak, R.
Małys, L.
Powiązania:
https://bibliotekanauki.pl/articles/1022757.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
drzewostany przebudowywane
buk zwyczajny
cechy biometryczne
podrost
przebudowa drzewostanow
lesnictwo
Fagus sylvatica
scots pine
stand reconstruction
undergrowth
common beech
Opis:
The article presents results of the growth assessment of the beech understore introduced artificially 25 years ago into a medium−aged pine stand, which had undergone reconstruction. In addition, current investigations results were compared with those obtained five years ago. Distinctly favorable changes were found in the structure of all beech growth parameters.
Źródło:
Sylwan; 2005, 149, 11; 37-41
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmiana struktury biosocjalnej w niepielęgnowanych drzewostanach sosnowych
Changes in the biosocial structure of unthinned Scots pine stands
Autorzy:
Beker, C.
Powiązania:
https://bibliotekanauki.pl/articles/1015657.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
drzewostany niepielegnowane
klasy Krafta
sosna zwyczajna
lesnictwo
Pinus sylvestris
drzewa lesne
kraft's classification
scots pine stands
pinus sylvestris l.
Opis:
The paper presents research results on the changes in the biosocial structure in unthinned Scots pine stands. Measurement data comes from 14 permanent research plots, encompassing proportionally the tree stands of 2nd to 5th age classes.
Źródło:
Sylwan; 2008, 152, 05; 44-51
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ trzebieży na zróżnicowanie strukturalne drzewostanów sosnowych
Autorzy:
Brzeziecki, B.
Powiązania:
https://bibliotekanauki.pl/articles/1022073.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
zroznicowanie
program BWINPro
trzebieze
lesnictwo
struktura drzewostanu
bwinpro program
diameter differentiation
diameter distribution
dominance index
scots pine
stand
structure
thinning
Opis:
The impact of two different kinds of thinning on structural diversity of pure, even−aged Scots pine stand, is analysed. The real thinning, performed in the field, is compared with simulated computer thinning. Both thinnings make use of the same set of future (elite) trees, but differ in respect to method of marking of trees for removing. To determine the impact of thinning mode on stand structure, the overall diameter distributions, as well as some structural indices (diameter differentiation, dominance index, contagion index), before and after thinnings, are analysed and compared.
Źródło:
Sylwan; 2005, 149, 10; 11-19
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Występowanie, biologia i znaczenie gospodarcze kornika ostrozębnego Ips acuminatus (Gyllenhal, 1827) (Coleoptera, Curculionidae, Scolytinae) w Polsce
Occurrence, biology, and economic importance of the sharp-dentated bark beetle Ips acuminatus (Gyllenhal, 1827) (Coleoptera, Curculionidae, Scolytinae) in Poland
Autorzy:
Plewa, R.
Mokrzycki, T.
Powiązania:
https://bibliotekanauki.pl/articles/987073.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
entomologia lesna
owady
kornik ostrozebny
Ips acuminatus
wystepowanie
znaczenie gospodarcze
zagrozenia drzewostanow
drzewostany sosnowe
ipini
pest
scots pine
monitoring
funnel trap
Opis:
Based on literature review, the occurrence and biology of the sharp−dentated bark beetle Ips acuminatus (Gyll.) in Scots pine stands of Europe was presented. The economic significance of this species in Poland over the past 50 years was also characterized, including the size of the damage caused as a result of trees infestation. The sharp−dentated bark beetle belongs to the most dangerous pest of pine stands, which is mostly due to the fact that it attacks trees without visible symptoms of weakness. Furthermore, the trees in the early stages of infestation are very difficult to identify in the field. In addition, stain fungi are introduced into the wood as a result of tunneling of both, adult beetles and larvae under the bark, which cause staining of wood and thus substantially reduce the quality and economic value of timber. Since 2015, in Scots pine forests in Poland the systematic increase in the abundance of population of sharp−dentated bark beetle is observed, resulting in increasing amount of Scots pine wood harvested in the sanitary cuttings. To reduce the damage caused by I. acuminatus in the endangered pine stands a number of activities related to active forest protection should be implemented. It is also necessary to monitor the population of this species continuously.
Źródło:
Sylwan; 2017, 161, 08; 619-629
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ trzebieży na wzrost i produkcyjność drzewostanów sosnowych na przykładzie doświadczenia w Kazlu Ruda (Litwa)
Impact of thinning on the growth and yield of Scots pine stands – a case study from Kazlu Ruda (Lithuania)
Autorzy:
Linkevicius, E.
Bijak, S.
Godvod, K.
Petrauskas, E.
Tiskute-Memgaudiene, D.
Valiukaite, R.
Sapokas, A.
Satinskas, R.
Powiązania:
https://bibliotekanauki.pl/articles/979650.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
Litwa
drzewostany sosnowe
sosna zwyczajna
Pinus sylvestris
trzebieze
wzrost drzewostanu
produkcyjnosc drzewostanow
scots pine
intermediate cuttings
growth and yield
long−term experiment
Opis:
One of the main tasks for the forest managers is to form the highly productive stands, and it is mainly performed by applying intermediate cuttings during the stand development. As the impact of thinning on the premature Scots pine, commercially most important species in Lithuania, has not been sufficiently investigated yet, our objective was to evaluate the impact of such treatments on the growth and yield of the pine stands by using data from the long term experimental plots. The described thinning experiment was established in 1983 in Kazlu˛ Ru−da (54.760395°N, 23.517736°E), in the 30−years−old Scots pine forest, growing in oligotrophic site conditions. Four square plots with the size of 0.25 ha each were set. The first one (5) was left as a control variant with no thinning, while the others were subjected to the treatments of different intensity. In variant 5A (slightly thinned) 15% of the basal area compared to the control plot was removed. Accordingly, in variant 5B (moderate thinning) 25% and in variant 5C (heavy thinning) 40% of basal area was subtracted. No additional thinning was implemented further during the experiment. Plots were re−measured at least 4 times with the last measurement in 2016, when the stand was 63 years old. The main result of this study was that after the 33 years no evident effect of various intensity of silvicultural treatments can be seen as the growth and yield of the un−thinned forest stand was the highest compared to the thinned ones. Growth and yield in the most intensely thinned stand reached 86 and 85% compared to the control variant, respectively. The best productive results were found for moderate thinning (92 and 89% of growth and yield of the un−thinned stand), while the worst – in the slightly thinned 5A variant (77 and 83% of values for the control stand). Further on, the number of trees and competition level in all plots were very different when the experiment was established. Yet after 33 years, these differences were remarkably reduced. Accordingly, the diameter distributions, being very different at the beginning of the experiment, eventually became very similar in all experimental plots. Finally, the results showed that in un− −thinned forest stand, natural mortality (self−thinning) of trees adjusted its density just in time. Thus this stand managed to keep its growing energy in later periods, avoiding degradation or destruction predicted by some theories.
Źródło:
Sylwan; 2019, 163, 09; 726-739
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wzory empiryczne do określania suchej biomasy nadziemnej części drzew i ich komponentów
Empirical formulae for determination of the dry biomass of aboveground parts of the tree
Autorzy:
Zasada, M.
Bronisz, K.
Bijak, S.
Wojtan, R.
Tomusiak, R.
Dudek, A.
Michalak, K.
Wróblewski, L.
Powiązania:
https://bibliotekanauki.pl/articles/1013519.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
drzewostany sosnowe
obliczenia
sosna zwyczajna
lesnictwo
biomasa
czesci nadziemne
wzory empiryczne
Pinus sylvestris
drzewa lesne
dry biomass
allometric equations
scots pine
carbon sequestration
Opis:
The paper presents empirical equations elaborated to determine dry biomass of Scots pine trees and their parts. Basing on the relationships between dry biomass of different tree parts and tree characteristics, various forms of commonly used non−linear biomass equations were examined. To assure additive character of biomass equations, seemingly unrelated regression was used for the final model fitting.
Źródło:
Sylwan; 2008, 152, 03; 27-39
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wzrost różnorodności gatunkowej chrobotków jako efekt rębni zupełnej na ubogich siedliskach borowych
Increase of Cladonia species diversity as a consequence of clear-cutting in nutrient-poor forest sites
Autorzy:
Stefańska-Krzaczek, E.
Faltynowicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/994072.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
siedliska borowe
siedliska oligotroficzne
rebnie zupelne
drzewostany sosnowe
chrobotek
Cladonia
wystepowanie
roznorodnosc gatunkowa
scots pine forest
managed forest
ground lichens
stand age classes
Opis:
Clear−cutting impacts site conditions seriously. However, in nutrient−poor sites the effects of stand removal can be minor than in nutrient−rich sites. The aim of this work was to assess whether the clear−cut can improve species diversity of ground Cladonia species, which decline has been observed in forest communities. In stands of different age classes (≤10, 11−20, 21−40, 41−60, 61−80, ≥81 years) in the Przymuszewo Forest District (northern Poland) ground Cladonia species and their cover were recorded on research plots (10×15 m). A total of 24 species were identified in the study area. There were more Cladonia species and they were more abundant in young stands (<20 years old) than in stands older than 60 years. Nine species are significantly more frequent and demonstrated high fidelity in young stands and only one was characteristic for old stands. Composition of Cladonia species depended primarily on stand age and subsequently on canopy or bryophyte cover. In nutrient−poor sites clear−cutting is favourable for Cladonia species diversity.
Źródło:
Sylwan; 2013, 157, 12; 929-936
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie dolnych warstw drzewostanu w planowaniu hodowlanym
Under-canopy layers in silvicultural planning
Autorzy:
Żybura, H.
Pewniak, B.
Powiązania:
https://bibliotekanauki.pl/articles/989497.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
hodowla lasu
planowanie hodowlane
drzewostany sosnowe
drzewostany wielopietrowe
podszyt
dab
Quercus
odnowienia podokapowe
jakosc hodowlana
scots pine
oak
silvicultural value
multi−layer stands
Opis:
Currently observed climate change creates favourable conditions for the development of not only deciduous species (oak and beech), but also some coniferous (e.g. fir). In the Scots pine stands growing on fertile forest site types one can observe the dynamic development of the under−canopy layers composed of those species. Oak or beech saplings are often characterized by good silvicultural value. Also silver fir creates a well−developed cover under Scots pine trees. Beech and fir as the most shade−tolerant tree species are able to handle the conditions under Scots pine. They can grow for a long time under the cover without damage to their height or diameter growth. Especially, a dynamic growth of oaks can often be observed on fresh mixed coniferous and fresh mixed broadleaved habitats. Oak layers in Scots pine stands are generally created in the way of natural regeneration with remarkable contribution of the jays, which spread the seeds even at considerable distances from the old trees. The corresponding intensity of thinnings supports to shape the proper silvicultural value of such under−canopy storeys. Observations on growth of such stand layers in the Scots pine stands in eastern and central Poland consider the desirability of including them in the next generation of stands. Their presence contributes to improvement of the biological stability of the stands, and also leads to increased productivity. By implementing to the forest practice the model of semi−natural silviculture, one wants to consider the possibility of using the saplings currently existing under the Scots pine as a component of the future stand. Knowledge about the silvicultural value and the impact on growth of lower layers will enable to develop the principles of proper cultivation of the multi−storey stands.
Źródło:
Sylwan; 2016, 160, 10; 815-821
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rozmieszczenie zimujących stadiów przedimaginalnych osnui gwiaździstej Acantholyda posticalis Mats. w drzewostanach sosnowych będących ogniskami gradacyjnymi szkodnika
Distribution of wintering pre-imaginal stages of the great web-spinning pine sawfly Acantholyda posticalis Mats. in Scots pine stands being the outbreak centres
Autorzy:
Sławski, M.
Mokrzycki, T.
Perliński, S.
Rutkiewicz, A.
Sławska, M.
Powiązania:
https://bibliotekanauki.pl/articles/980205.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
drzewostany sosnowe
szkodniki roslin
osnuja gwiazdzista
Acantholyda posticalis
larwy zimujace
eonimfy
pronimfy
rozmieszczenie przestrzenne
autumn survey
scots pine pests
eonymphae
pronymphae
abundance
distribution variability
Opis:
Acantholyda posticalis Mats. for over twenty years increases the extent of occurrence and causes defoliation of Scots pine stands. The population size is estimated annually based on the autumn surveys of phytophagous insects, but accuracy of these prognoses is far from satisfactory. The aim of the study was to describe the spatial distribution of pre−imaginal stages of A. posticalis wintering in the litter and soil to improve the methods of survey currently applied in Polish forestry. The research was carried out in four forest district located in different regions of Poland. In each forest stand three following zones were outlined: the belt of trees on the edge of the stand adjoining to young plantation or thicket, the belt 15−20 m from the stand edge and the belt in the forest interior at least 30−40 m from the edge of a stand. 152 trees were examined and 1540 plots of size 1×0.5 m were established under their canopy. The pre−imaginal stages were searched within each of these plots in the litter and soil to the depth of 20 cm. Later on they were divided into eonymphae and pronymphae, and counted. The significant differences in number of pre−imaginal stages of A. posticalis between studied forest stands in different forest districts were found. The spatial distribution of larvae wintering in the litter and soil was highly variable in scale of both stand and single tree. The abundance of larvae depended on the distance from the forest edge, but the values of this parameter calculated for trees in the same zone also varied substantially. The lowest mean abundance of pre−imaginal stages of A. posticalis denoted under pines growing at the edges of trees stand. Within the canopy projection on forest floor, the distribution of larvae was significantly dependent on the distance from the tree trunk. The highest abundance was observed within one meter from the trunk. The survey method currently used for primary pine pest assessment in Polish forests bases on ten plots and five of them are located 1.5 m from the tree trunk. In the light of presented results, the assessment of A. posticalis number could be inaccurate, because half of these plots in which scrutiny of litter and soil take place, omit the areas of higher concentration of wintering stages of the pest.
Źródło:
Sylwan; 2019, 163, 07; 556-563
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 45

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