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Wyszukujesz frazę "Melolontha spp." wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Możliwości ochrony lasu przed owadami uszkadzającymi systemy korzeniowe metodą biologiczną z wykorzystaniem entomopatogennnych nicieni i bakterii
    Possibility of forest protection against insects damaging root systems with the use of biological method based on entomopathogenic nematodes and bacteria
    Autorzy:
    Malinowski, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/973985.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    Melolontha
    bakterie entomopatogenne
    biologiczne metody ochrony roslin
    nicienie entomopatogenne
    ochrona lasu
    owady
    szkodniki korzeni
    chrabąszcz
    szkodniki roślin
    leśnictwo
    ntomopathogenic nematodes
    entomopathogenic bacteria
    melolontha spp
    efficacy
    Opis:
    The paper presents the mechanism of insects infection with entomopathogenic nematodes (Steinernema and Heterorhabditis) and bacteria, their infectivity and survival in the environment and efficacy, mainly against Melolontha spp. white grubs.
    Źródło:
    Sylwan; 2011, 155, 02; 104-111
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ryzyko masowego występowania pędraków chrabąszczy (Melolontha spp.) w strefie ekotonowej drzewostanów dojrzałych na terenie Nadleśnictwa Lubaczów
    Risk of the mass occurrence of cockchafer (Melolontha spp.) grubs in the ecotone of mature stands in Lubaczow Forest District
    Autorzy:
    Niemczyk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/989889.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany dojrzale
    ekotony
    ekoton las-laka
    szkodniki roslin
    chrabaszcz majowy
    Melolontha melolontha
    chrabaszcz kasztanowiec
    Melolontha hippocastani
    pedraki
    wystepowanie masowe
    ryzyko wystapienia
    regresja logistyczna
    Nadlesnictwo Lubaczow
    melolontha spp.
    forest−meadow ecotone
    mature stand
    logistic regression
    Opis:
    This study evaluated the environmental risk drivers affecting the occurrence of cockchafer grubs in mature stands bordering with open spaces. The following factors were taken into the consideration: the distance from the edge towards the forest interior, the forest site type, species composition, canopy openness and the cover of forest floor with vegetation as well as cutting treatment in some of the investigated stands. In one of the biggest cockchafer outbreak centers in Poland (Lubaczów Forest District; SE Poland) 6 mature stands were chosen and estalished 5 transects in each of them. Each transect was 250 m long and consisted of 6 pits (1×0.5×0.5 m) in a regular distance of 50 m with the first pit on an open space bordering with forest. Pits were used to determine the grub infestation of the soil. In the area of 100 m² around the pit, the general vegetation cover and tree species composition of a stand were characterized. The forest light environment was defined by hemispherical photography. The distance in transect and the fact that stand was harvested were also taken into consideration. The applied logistic regression model demonstrated that the site fertility is the most important factor that significantly increases the risk of cockchafer grubs occurrence. The other characteristics that also cause that stand is more attractive for the cockchafer grubs are: participation of the broadleaved species in stand composition and the dense vegetation cover. Furthermore, the cockchafer grubs occurrence was more frequent in the forest interior than in an open space or at the forest−meadow ecotone.
    Źródło:
    Sylwan; 2015, 159, 04; 326-335
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ocena liczebności pędraków Melolonthinae w pułapkach trocinowych w uprawach sosny zwyczajnej (Pinus sylvestris L.)
    Assessing the number of Melolonthinae larvae in the sawdust traps in young Scots pine (Pinus sylvestris L.) plantations
    Autorzy:
    Szmidla, H.
    Tkaczyk, M.
    Małecka, M.
    Sierota, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/986677.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    ochrona lasu
    uprawy lesne
    sosna zwyczajna
    Pinus sylvestris
    pulapki trocinowe
    szkodniki roslin
    Melolonthinae
    pedraki
    liczebnosc
    melolontha spp.
    young forest plantations
    root−pest monitoring
    Opis:
    Root−feeding insects are an increasingly studied group of herbivores, whose impact on plant productivity and are some of the most damaging forest pests in Europe. Due to the mass feeding on the roots of seedlings and older trees in young plantation and stands, Melolonthinae larvae are classified as pests, which are the most dangerous on the land dedicated to afforestation. The research was located in the Wyszków Forest District (52°43'15' N; 21°39'03' E) on the mixed coniferous and mixed deciduous forest habitats. This study evaluated sawdust traps as the method for assessing abundance of Melolonthinae larvae in Scots pine plantations established artificially from open nursery, container production, and from natural regeneration. In spring 2015 i) ‘small sawdust pits’ in rows between seedlings, and ii) pits without soil in adjacent inter−rows as control were prepared. In spring and autumn 2016, and in spring 2017 sawdust and soil from both variants of pits were sieved and Melolonthinae larvae were counted and compared. The obtained results were analyzed in two ways. The first analysis compared the occurrence of grubs in small pits with or without sawdust, while the other one analysed influence of the time of making small pits, independently for the variant with or without sawdust. The final stage was to compare the number of Melolonthinae larvae in small pits between the origin of the seedlings. We found a greater number of grubs in spring assessment than in autumn. Both kinds of small pits showed higher number of Melolonthinae larvae when compared to traditional method of ‘great pits’. The number of Melolonthinae larvae was significantly higher on the plots with container seedlings than the others. The conceptual assumptions of this alternative and environmentally safe method of ‘sawdust traps’ seems to be optimistic.
    Źródło:
    Sylwan; 2018, 162, 07; 590-597
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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