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    Wyświetlanie 1-6 z 6
    Tytuł:
    Effects of sawdust amendment on forest soil fungal community and infestation by cockchafers
    Autorzy:
    Kwasna, H.
    Malecka, M.
    Sierota, Z.
    Jaworski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/41429.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    sawdust amendment
    Scotch pine
    pine wood
    forest soil
    fungi community
    infestation
    cockchafer
    larva
    Melolontha melolontha
    forest cockchafer
    Melolontha hippocastani
    Opis:
    Effects of Scots pine wood amendment on the fungal community in forest soil infested with cockchafers and foraged or non-foraged by wild boars and hares were investigated. We hypothesized that sawdust amendment would increase the abundance of entomopathogenic and insect-associated species effective in cockchafer predation. The soil dilution method and morphotyping were used for fungal isolation and identification in order to quantify and qualify the viable components of the microbiota that are important for evaluating soil functions. There was usually increased abundance and decreased diversity of soil fungi one year after sawdust amendment. Application of pine sawdust more often increased than decreased the abundance of some insect-associated fungi or dermatophytes and keratinophilic species and decreased the number of cockchafer larvae. Abundance of Geomyces pannorum, Mortierella spp. + M. luteus, Pseudogymnoascus roseus, Tolypocladium inflatum and Trichoderma koningii increased, at least locally, whilst Chrysosporium merdarium, Penicillium spp. (including the most common P. citrinum, P. daleae and P. janczewskii), Sporothrix schenckii and Trichoderma spp. decreased. Application of pine sawdust under roots of 1-year-old Scots pine seedlings significantly increased the abundance of Phoma + Pyrenochaeta spp. in neighbouring soil, thus increasing the risk from Phoma blight. Trichoderma strigosum was among the dominants (frequency >5%). Another six and two Trichoderma species were among the subdominants (frequency 1–5%) and subrecedents (frequency <1%), respectively. Dermatophytes, coprophilous and keratinophilic species, e.g. Cephalotrichum, Chrysosporium merdarium or S. schenckii, occurred only or mostly in foraged plots. The altered communities resulting from pine sawdust amendment may contribute to biological control of the cockchafer larvae.
    Źródło:
    Dendrobiology; 2016, 75
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Czynniki wpływające na wydajność i koszty zabiegów agrolotniczych wykonywanych na terenie Regionalnej Dyrekcji Lasów Państwowych w Pile w roku 2013
    Factors affecting the efficiency and costs of airborne spraying in Regional Directorate of the State Forests in Pila in 2013
    Autorzy:
    Majewski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/989879.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    RDLP Pila
    lasy
    szkodniki roslin
    barczatka sosnowka
    Dendrolimus pini
    piedzik przedzimek
    Operophtera brumata
    chrabaszcz kasztanowiec
    Melolontha hippocastani
    ochrona lasu
    zabiegi agrolotnicze
    zwalczanie szkodnikow
    opryski lotnicze
    wydajnosc
    koszty
    airborne spraying
    efficiency
    unit costs
    sprayed area
    Opis:
    The Sustainable Use Directive (2009/128/EC) establishes a framework for European Community action to achieve the sustainable use of pesticides imposed restrictions in agro−aviation pesticides application. As a result of the creation of buffer zones, part of the endangered area must be excluded from spraying and the area will be fragmented. This article evaluated the impact of the size, shape and distance between the sprayed area and the aerodrome, on the efficiency and cost of agro−aviation spraying in Regional Directorate of the State Forests in Piła (western Poland) in 2013. The efficiency of agro−aviation spraying is highly positively correlated with the shape and size of sprayed area. Weak negative correlation was found with the distance between the sprayed area and the aerodrome. The obtained efficiency ranged from 23.37 to 198.98 ha/h, while the costs covered the span from 61.96 to 423.34 zł/ha. The structure of unit costs varied depending on the spraying parameters. The costs of aircraft charter and purchase of pesticides are dominating part of the whole process. Variability of the spraying costs causes that their averaging distorts the results and makes it difficult to plan the future costs.
    Źródło:
    Sylwan; 2015, 159, 04; 289-299
    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:
    Wpływ pokarmu na imagines chrabąszczy Melolontha melolontha i M. hippocastani
    Effects of food source quality on the adults of Melolontha melolontha and M. hippocastani
    Autorzy:
    Woreta, D.
    Lipiński, S.
    Wolski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1295010.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    entomologia lesna
    szkodniki roslin
    chrabaszcz majowy
    Melolontha melolontha
    chrabaszcz kasztanowiec
    Melolontha hippocastani
    owady dorosle
    przyrost masy ciala
    przezywalnosc
    dlugosc zycia
    plodnosc
    pokarm
    preferencje pokarmowe
    forest cockchafer
    common cockchafer
    forest pests
    relative growth rate
    mortality
    food quality
    Opis:
    This paper presents the results of studies on the life span, survival, weight and fecundity of the forest cockchafer (Melolontha hippocastani, Fabricius, 1801) and the common cockchafer (Melolontha melolontha, Linnaeus, 1758) beetle feeding on Alnus glutinosa (L.) Gaertn., Betula pendula Roth., Carpinus betulus L., Fagus sylvatica L., Larix decidua Mill., Prunus serotina (Ehr.) Borkh., Quercus petraea (Matt.) Liebl., Quercus robur L., Robinia pseudoacacia L., Sambucus nigra L. and Sorbus aucuparia L. em. Hedl. The lifespan and weight of beetles as well as female fertility were examined in 2011 and 2013. Specimen for laboratory tests were collected in the field shortly after leaving their overwintering sites in the soil and identical experimental protocols were applied to both examined species. 576 and 432 beetles were tested in 2011 and 2013, respectively. In 2011, beetles were feeding on A. glutinosa, B. pendula, F. sylvatica, L. decidua Q. petraea leaves and on C. betulus, P. serotina, R. pseudoacacia, S. aucuparia and S. nigra in 2013. Both years, beetles feeding on Q. robur leaves were examined as a control. Our results showed that feeding on leaves of Q. robur and Q. petraea had the largest positive impact on the life time, weight and fecundity of the studied beetles. Leaves of F. sylvatica and L. decidua also constituted an adequate food source for the development of M. melolontha. M. hippocastani, however, did not perform as well when feeding on these two tree species. Females of M. melolontha reared on leaves of B. pendula did not lay eggs. The following plant species had a negative impact on the survival and development of the collected specimen and female fertility: A. glutinosa, S. nigra, P. serotina and R. pseudoacacia. Neither beetle species fed on the leaves of A. glutinosa or S. nigra.
    Źródło:
    Leśne Prace Badawcze; 2016, 77, 1
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wplyw pokarmu na rozwoj chrzaszczy chrabaszcza kasztanowca [Melolontha hippocastani F.] [Coleoptera, Melolonthidae]
    Effect of food on development of the Melolonta hippocastani F. beetles [Coleoptera, Melolonthidae]
    Autorzy:
    Woreta, D.
    Sukovata, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/45430.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    szkodniki roslin
    owady
    pokarm
    pedy ulistnione
    dab szypulkowy
    Quercus robur
    grab pospolity
    Carpinus betulus
    brzoza brodawkowata
    Betula pendula
    olsza czarna
    Alnus glutinosa
    chrabaszcz kasztanowiec
    Melolontha hippocastani
    owady dorosle
    przezywalnosc
    dlugosc zycia
    samice
    plodnosc
    Źródło:
    Leśne Prace Badawcze; 2010, 71, 2; 195-199
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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