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    Wyświetlanie 1-4 z 4
    Tytuł:
    Evaluation of the Impact of the Ecklonia Maxima Extract on Selected Morphological Features of Yellow Pine, Spruce and Thuja Stabbing
    Autorzy:
    Sosnowski, J.
    Malinowska, E.
    Wiśniewska-Kadżajan, B.
    Jankowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/123092.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    extract
    growth
    twigs
    needles
    Opis:
    The study was focused on the impact of an extract of Ecklonia maxima on selected morphological features of yellow pine (Pinus ponderosa Dougl. ex C. Lawson), prickly spruce (Picea pungens Engelm.) Variety Glauca, thuja (Thuja occidentalis) variety Smaragd. The experiment was established in April 12, 2012 on the forest nursery in Ceranów. April 15, 2013 was introduced research agent in the form of a spraying an aqueous solution extract of Ecklonia maxima with trade name Kelpak SL. Biologically active compounds in the extract are plant hormones: auxin and cytokinin. There were studied increment in plant height, needle length of yellow pine, twigs length in prickly spruce and thuja. The measurements of increment in length of twigs and needles were made in each case on the same, specially marked parts of plants and have carried them on the 27th of each month beginning in May and ending in September. The results were evaluated statistically using the analysis of variance. Medium differentiations were verified by Tukey’s test at a significance level p ≤ 0.05. The study showed that the diversity of traits features in the experiment was depended on the extract, the tree species and the measurement time. The best results after the extract using showed a pine and spruce. Seaweed preparation contributed to increment increased of trees height for in the pine and spruce and the needles length of pine and twigs of spruce. The species showing no reaction to the extract was thuja.
    Źródło:
    Journal of Ecological Engineering; 2016, 17, 3; 169-174
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    First report of Apiognomonia errabunda on Quercus ilex in Algeria
    Autorzy:
    Bensaci, Oussama Ali
    Beghami, Riadh
    Gouaref, Kamel
    Powiązania:
    https://bibliotekanauki.pl/articles/2041269.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    anthracnose
    leaf position
    Quercus ilex
    severity
    twigs orientation
    Opis:
    Anthracnose of holm oak (Quercus ilex L.) was studied in several sites located in Belezma National Park (Eastern Algeria). Disease severity varied according to the site, but symptoms were particularly frequent on leaves supported by south-facing twigs. Leaves inserted on the distal part of twigs were more affected by anthracnose regardless of twigs’ position on trees. The fungal isolates obtained from damaged tissues were sorted to five morphotypes and identified as Apiognomonia errabunda based on morphological characteristics and ITS sequencing. This is the first record of the occurrence of the fungus Apiognomonia errabunda on Quercus ilex in Algeria. Particular climatic conditions marked by late spring rains followed by high temperatures may play a key role in the increased leaf vulnerability of Q. ilex to infection.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 1; 10-20
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wydajność aparatu asymilacyjnego sosny zwyczajnej (Pinus sylvestris L.) różnych klas wieku
    Productivity of the assimilation apparatus of Scots pine (Pinus sylvestris L.) in various age classes
    Autorzy:
    Turski, M.
    Beker, C.
    Jaszczak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/989700.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany sosnowe
    klasy wieku
    klasy Krafta
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    aparat asymilacyjny
    wydajnosc aparatu asymilacyjnego
    volume of leaved twigs
    productivity of assimilating apparatus
    age classes
    kraft's classes
    Opis:
    Productivity of the assimilating apparatus is commonly defined as an increment in volume, most typically of the stem or trunk, per unit of crown size. In this paper the productivity of the assimilating organ (CPtwn1) is calculated as a quotient of the average annual increment in stem volume from a 5−year period (iv1) and the volume of twigs with needles (twnv), determined by xylometry methods (fluid displacement method). The experimental material comprised measurements taken on 200 Scots pines (Pinus sylvestris L.) in 8 pure pine stands growing in western Poland (tab. 1). Using the calculated sizes of assimilating apparatus, their arithmetic means and coefficients of variation were calculated for each stand (tab. 2, 3). Additionally, mean crown productivity within each Kraft's class comprising the dominant trees (classes 1, 2 and 3) as well as in the dominated trees (classes 4 and 5) were determined. The strength of the relationship between CPtwn1 and diameter at breast height (d1.3), height (h) and volume of leaved twigs (twnv) was calculated (tab. 4). Moreover, a two−way analysis of variance was conducted to assess the statistical significance of the effect of age of the stand and biosocial class of tree position in the stand (within the dominant trees and the dominated trees) on productivity of the assimilating apparatus. Mean productivity of analysed Scots pine crowns takes the highest values in the youngest stand (0.60 m³), while the lowest – in the oldest stand (0.34 m³). In the youngest, 25−year old pine stand, mean productivity of the assimilating apparatus in trees forming the dominated trees is by 124% greater than that of trees forming the dominant trees. An opposite situation is found in the oldest, 93−year−old stand, where mean productivity of the dominant trees is over 1.5 greater than that recorded in the dominated trees. Statistically significant effect of the stand age on productivity of the assimilating apparatus was observed (tab. 5). However, affiliation of a tree to the dominant or dominated trees does not result in such an effect. On the other hand, there is an interaction between age of the stand and its affiliation to the Kraft's classes. This means that the affiliation of trees to the dominant trees or the dominated trees and its effect on mean productivity of the assimilating apparatus depend on the age of stand.
    Źródło:
    Sylwan; 2015, 159, 01; 36-44
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wielkość i wydajność aparatu asymilacyjnego sosny zwyczajnej (Pinus sylvestris L.)
    Size and efficiency of Scots pine (Pinus sylvestris L.) assimilation apparatus
    Autorzy:
    Beker, C.
    Turski, M.
    Kaźmierczak, K.
    Najgrakowski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/979342.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewostany sosnowe
    sosna zwyczajna
    Pinus sylvestris
    aparat asymilacyjny
    masa igliwia
    wydajnosc aparatu asymilacyjnego
    leśnictwo
    drzewa leśne
    masa ulistnionych gałązek
    mass of twigs covered with needles
    mass of needles
    efficiency of assimilation apparatus
    Opis:
    The aim of the study is to analyse the size and efficiency of assimilation apparatus of Scots pine (Pinus sylvestis L.) using the site index model for unthinned pine stands (Model Pinus). The size of the assimilation apparatus was regarded in terms of mass of the twigs covered with needles (Ugc) and mass of needles (Ic). It reaches maximum values at the age of 20−25 years, then dynamically decreases to the age of 50 years, stabilizes between 50 and 80 years and from the age of 85 to 120 years again shows a mild increasing trend. The maximum mass of twigs covered with needles is from 40 (BON34) to 20 (BON26) t/ha, while mass of needles – from 25 (BON34) to 13 (BON26) t/ha. The minimum weight is from 18 (BON34) to 16 (BON26) t/ha and from 13 (BON34) to 11 (BON26) t/ha, respectively. The efficiency of the assimilation apparatus determined as the dependence of the current volume increment on in the dependence on mass of twigs covered with needles (WUgc) or mass of needles (WIc) is dynamically increasing and at the age of 45 years it reaches the maximum and then shows a downward trend to the age of 120 years. At the culminating point of these features, they are similar for all site indices and range from 0.83 to 0.88 m3/t (WUgc) and from 1.23 to 1.31 m3/t (WIc).
    Źródło:
    Sylwan; 2020, 164, 01; 3-9
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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