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    Wyświetlanie 1-8 z 8
    Tytuł:
    Effect of street conditions, including saline aerosol, on growth of the Small-leaved limes
    Wpływ warunków przyulicznych, w tym aerozolu solnego, na wzrost lip drobnolistnych
    Autorzy:
    Borowski, J.
    Pstragowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/888469.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Dendrologiczne
    Tematy:
    Small-leaved lime
    Tilia cordata
    environment pollution
    lime
    plant growth
    saline aerosol
    salinity stress
    street condition
    street habitat
    street tree
    tree size
    urban tree
    Opis:
    There is increasing number of trees dying in large urban agglomerations. The problem is mostly pronounced in the case of street trees. In Polish cities, apart of pollutions generated by traffic, an important factor that causes death of trees is high salt concentration as a result of winter salt application for de-icing of streets. The aim of the study was to assess the growth of limes (Tilia cordata) planted along highly trafficked Warsaw street and exposed, among others, to salt in a form of saline aerosol. The assessment of shoot length, tree height and crown volume, based on the photographic method of the three increment assessments, showed very restrained growth of the studied limes. In the years 2006-2008 the trees performed so poorly as in similar period of 2003-2005 and grew worse than limes form natural habitats. In 2009 we even observed decrease in size of street trees as compared to 2008 which suggests both very bad condition of street habitats and the studied trees. Salt concentration measured on the surface of tree buds and shoots (EC) was higher in street trees than in trees from natural habitats, which indicates that saline aerosol is the source of sodium chloride. We observed highly diversified reactions of individual trees to the whole complex of street conditions. It is therefore recommended to select for propagation individuals from among most tolerant and vigorously growing plants (genotypes) to be used in street planting.
    Źródło:
    Rocznik Polskiego Towarzystwa Dendrologicznego; 2010, 58
    2080-4164
    2300-8326
    Pojawia się w:
    Rocznik Polskiego Towarzystwa Dendrologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Size and localisation of knots in timber from mountain spruce stands in the Dolomites
    Autorzy:
    Barszcz, A.
    Sandak, A.
    Sandak, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/38333.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    size
    localization
    knot
    timber
    mountain spruce
    tree stand
    Dolomites
    knot healthiness
    Opis:
    The aim of the study was evaluation of knots in wood of 150-year-old Norway spruce [Picea abies (L.) Karst.] in stands situated at the altitude of 1450– 1740 m above sea level in the Dolomites in Italian section of the Alps. In selected stands, spruce trees were cut down and their length, stem thickness, height to the crown base and stem diameters at every 1 m along the length of merchantable bole were measured. The diameter of knots was measured and they were classified according to their healthiness and the degree of their tightness with the surrounding wood. The relative knot diameters were calculated and the relative height of their location on stem was determined. In total on sample trees there were analysed 1070 knots, of which sound knots (close to 75%) and tight (more than 60%) prevailed. Sound and tight knots had largest diameters, relative diameters and relative heights of location on merchantable boles. The smallest diameters and relative diameters were indicated by rotten and not tight knots that were located at the lowest merchantable bole parts.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2010, 52, 1
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The variability of dimensions of Quercus robur L. and Quercus petraea (Matt.) Liebl. acorns in Poland
    Autorzy:
    Barzdajn, W
    Powiązania:
    https://bibliotekanauki.pl/articles/41726.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    variability
    acorn size
    dimension
    Polska
    acorn
    forest tree
    Quercus robur
    Quercus petraea
    Opis:
    The paper includes results of measurements of the length and diameter of 12600 acorns of Quercus robur and 5099 acorns of Q. petraea collected in Poland in the mast-year 1993. Acorns of both species were compared. Significant differences in acorn length and diameter/length ratio were found. Acorns of Q. robur are somewhat larger, but both species have a large common area of variability. The scale of this variability has been determined. Geographical correlation of the size of Q. robur acorns was ascertained.
    Źródło:
    Dendrobiology; 2002, 47 Supplement
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Natural drying of fruit trees wood
    Naturalne suszenie drewna drzew owocowych
    Autorzy:
    Lisowski, A.
    Grela, M.
    Sypula, M.
    Swietochowski, A.
    Dabrowska-Salwin, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/56181.pdf
    Data publikacji:
    2015
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    natural drying
    drying
    wood drying process
    fruit tree
    wood
    particle size
    mathematical model
    Opis:
    The aim of this study was to evaluate the fit of mathematical models for drying wet wood chunks with a length of 60 ±1 mm and a diameter of 10 ±2 mm and dry wood chips size of 40 ±10 mm obtained from the branches of fruit trees stored for a 6--months period under natural conditions. Biomass moisture was measured on a monthly basis. For moisture ratio the parameters of nine mathematical models and their statistical evaluation were developed. It was found that wet wood chunks had a large shrinkage (15%) which was probably due to the high content of soft wood tissue in the branches. During the storage of wet wood chunks the moisture decreased significantly, from 47.57 to 10.84%, and the dry chips only slightly (from 11.85 to 8.04%), and in both cases at the end of drying the biomass reached an equilibrium moisture. The best model reflecting changes moisture ratio of wet wood chunks is the Page's model, but the Wang's, Singh's and logarithmic models, may also be used for drying a moist biomass under natural conditions. Drying of dry wood chips is best represented by the logarithmic model, but for this kind of material a Page's, Wang's and Singh's, two term and Midilli's et al. models can be used. Modeling in natural conditions requires consideration of ambient conditions, especially air temperature and relative humidity.
    Celem pracy była ocena dopasowania matematycznych modeli suszenia dla wilgotnych kawałków drewna o długości 60 ±1 mm i średnicy 10 ±2 mm oraz podsuszonych zręb-ków o wymiarze 40 ±10 mm uzyskanych z gałęzi drzew owocowych przechowywanych przez okres 6 miesięcy w warunkach naturalnych. Wilgotność biomasy zmierzono w okresach miesięcznych. Dla zredukowanej zawartości opracowano parametry dziewięciu modeli matematycznych oraz ich oceny statystyczne. Stwierdzono, że wilgotne kawałki drewna miały duży skurcz suszarniczy (15%), który prawdopodobnie wynikał z dużej zawartości tkanki miękkiej w gałęziach. W okresie przechowywania wilgotność wilgotnych kawałków drewna zmniejszyła się istotnie, z 47,57 do 10,84% a suchych zrębków tylko nieznacznie (z 11,85 do 8,04%) i w obu przypadkach pod koniec suszenia biomasa osiągnęła wilgotność równowagową. Najlepszym modelem odzwierciedlającym zmiany zredukowanej zawartości wody w wilgotnych kawałkach drewna okazał się model Page'a, ale modele Wanga i Singha oraz logarytmiczny mogą być również wykorzystane do suszenia biomasy wilgotnej w warunkach naturalnych. Suszenie podsuszonych zrębków jest najlepiej reprezentowane przez model logarytmiczny, ale do tego rodzaju materiału mogą być użyte modele Page'a, Wanga i Singha, dwuwyra-żeniowy oraz Midilliego i innych. Modelowanie w warunkach naturalnych wymaga uwzględnienia warunków otoczenia, a zwłaszcza temperatury i wilgotności względnej powietrza.
    Źródło:
    Annals of Warsaw University of Life Sciences - SGGW. Agriculture; 2015, 65 Agric.Forest Eng.
    0208-5712
    Pojawia się w:
    Annals of Warsaw University of Life Sciences - SGGW. Agriculture
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laboratory determination of potential interception of young deciduous trees during low-intense precipitation
    Autorzy:
    Klamerus-Iwan, A.
    Sporysz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/38420.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    deciduous tree
    rainfall
    intensity
    simulated rainfall
    potential interception
    raindrop size
    Fagus sylvatica
    Quercus robur
    laboratory determination
    precipitation
    Opis:
    The research issue focuses on potential interception, which is the maximum amount of water that can be stored on plant surface. Tests under controlled conditions remain the best way to enhance knowledge on interception determinants in forest communities. Such tests can provide data for identification of mathematical models based on ecological criteria. The study presented in this paper concerned tree interception under simulated rain in a range from 2 to 11 mm/h. To perform the experiment a set of sprinklers was designed and built. The study included two deciduous species: beech (Fagus sylvatica L.) and oak (Quercus robur L.). Descriptive characteristic and nonlinear estimation were suggested for the obtained data. Interdependence of potential interception, the intensity of rain and the size of raindrops were described using exponential equation. The intensity and drop size of simulated rainfall significantly influence the obtained values of potential interception. Data analysis shows a decrease of interception value with an increase of intensity of simulated rainfall for both analysed species. Every run of the experiment that differed in the intensity and size of raindrops reached an individual level of potential interception and time needed to realize it. The formation of ability of plants to intercept water depends both on the dynamics and the time of spraying.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2014, 56, 1
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimisation of thinning of apple fruitlets cv. 'Braeburn Mariri Red'
    Autorzy:
    Szot, I.
    Lipa, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/13925588.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    apple tree
    Braeburn Mariri Red cultivar
    thinning
    chemical thinning
    fruitlet thinning
    fruit size
    benzyladenine
    cytokinin
    metamitron
    thinning agent
    Źródło:
    Acta Agrophysica; 2019, 26, 3; 65-76
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of three sour cherry cultivars grown in Central-Eastern Poland
    Autorzy:
    Borowy, A.
    Chrzanowska, E.
    Kapłan, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/11888483.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    Central-Eastern Poland
    plant cultivar
    fruit tree
    sour cherry
    mahaleb cherry
    Kelleris 16 cultivar
    Lutowka cultivar
    Nefris cultivar
    plant cultivation
    fruit crop
    fruit quality
    fruit size
    flavonoids content
    phenolic acid
    anthocyanin
    productivity index
    DPPH method
    dodine
    thiacloprid
    Opis:
    Sour cherry is one of the most important fruit crops in Poland and cultivar is an important factor in its cultivation. The experiment was conducted in a commercial family orchard in a year characterized by a warm and wet spring and also by a very hot and dry summer. Fruit yields harvested from well fertilized 19-years old ‘Kelleris 16’, ‘Nefris’ and ‘Łutówka’ trees grafted on Mahaleb cherry and protected against pests using integrated plant protection system were medium high and of good quality, however productivity index of a tree was low. The fruits attained high weight and diameter and contained big amounts of sugars, vit. C, anthocyanins and flavonoids and medium amount of phenolic acids. Among anthocyanins the most important were cyanidin 3-glucosyl-rutinoside and cyanidin 3-rutinoside. Antioxidant activity of fruits measured as percent of DPPH inhibition was high and similar among compared cultivars. Łutówka was the most productive cultivar of medium leaf and fruit size and with fruits of highest vit. C and flavonoids content and lowest total sugars and monosaccharides content. The least productive cultivar was Nefris, though its fruits were the biggest and contained dry matter, soluble solids, anthocyanins and phenolic acids in the highest amounts of all and vit. C at the lowest level of all. Kelleris 16 was the medium productive cultivar characterized by widest leaf blades and smallest fruits. Content of total sugars and monosaccharides in its fruits was the highest and content of anthocyanins and phenolic acids was the lowest. Residues of dodine and thiacloprid determined in the fruits immediately after harvest were much lower than the permissible residue maximum level.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 1; 63-73
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Powiązanie przyrostu radialnego obcych i rodzimych gatunków drzew w LZD Rogów z wybranymi parametrami korony
    Radial growth of alien and native tree species growing in LZD Rogow with regard to selected crown parameters
    Autorzy:
    Bijak, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/991562.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    dendrometria
    drzewa lesne
    gatunki obce
    daglezja zielona
    Pseudotsuga menziesii
    jodla olbrzymia
    Abies grandis
    jodla kaukaska
    Abies nordmanniana
    swierk kaukaski
    Picea orientalis
    zywotnik olbrzymi
    Thuja plicata
    dab czerwony
    Quercus rubra
    gatunki rodzime
    jodla pospolita
    Abies alba
    modrzew europejski
    Larix decidua
    sosna zwyczajna
    Pinus sylvestris
    dab szypulkowy
    Quercus robur
    przyrost grubosci
    przyrosty radialne
    korony drzew
    dlugosc korony
    szerokosc korony
    pole rzutu korony
    przestrzen pojedynczego drzewa
    tree−ring width
    crown diameters and size
    alien and native species
    central poland
    Opis:
    Paper analyses relationships between radial growth and seven crown−related parameters (crown length, relative length, width, slenderness, projection area and volume as well as single tree space) for ten alien and native tree species growing in 'common garden' conditions in the WULS−SGGW Forest Experimental Station in Rogów (central Poland). Significant correlation was found between 10− and 15−years mean tree−ring width and all analysed crown parameters as well as single tree space for Abies grandis, Abies nordmanniana and, except for crown length and its relative length, for Pinus sylvestris. No relationship was observed between radial increment of Larix decidua, Pseudotsuga menziesii and Quercus rubra and any of analysed crown parameters.
    Źródło:
    Sylwan; 2013, 157, 04; 278-287
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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