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    Wyświetlanie 1-5 z 5
    Tytuł:
    Determination of irrigation requirements and crop coefficients using weighing lysimeters in perennial plants
    Autorzy:
    Treder, J.
    Treder, W.
    Klamkowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/101548.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    ornamental nurseries
    evapotranspiration
    crop coefficient Kc
    weighting lysimeter
    automatic irrigation systems
    Opis:
    The increasing role of perennials in ornamental nurseries requires the elaboration of efficient and accurate irrigation control of this specific group of plants. The experiment was conducted in 2015 in Research Institute of Horticulture, in Skierniewice. The aim of the study was to determine the water requirements and designate the specific evapotranspiration crop coefficient Kc of several perennials, commonly grown in Polish ornamental nurseries. Water requirements of perennials were evaluated using weighing lysimeters. At the same time the recorded climate parameters allowed to calculate the potential evapotranspiration (ET0). Lysimeter measurements and meteorological data allowed determine specific to each species crop coefficient (Kc). The Kc values were determined by dividing ETc by ET0. The obtained results showed that irrespectively of plant growth phase there is strong correlation between climate parameters and real crop evapotranspiration (ETc) of six evaluated perennials: Anemone hupehensis ‚Prinz Heinrich’, Echinacea purpurea ‘Guava Ice’, Hemerocallis, ‘Sandra Elisabeth’, Salvia nemorosa ‘Mainacht’ and Veronica spicata ‘Royal Candles Glory’. The Kc coefficients of all species were changed during the growth season and increased according to plant development and percentage of ground coverage of soil in the lysimeter by leaves. The strong, positive correlation was shown for daily and hourly calculated crop evapotranspiration and potential evapotranspiration (ET0) obtained from weather station. Determination of crop coefficients for ornamental perennials is essential for precise calculation of water doses and irrigation controlling in the nurseries.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, III/2; 1213-1228
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Regulated deficit irrigation of rhododendrons grown in containers
    Autorzy:
    Matysiak, B.
    Koniarski, M.
    Treder, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/101612.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    evapotranspiration
    irrigation
    ornamental nursery
    regulated deficit irrigation
    RDI
    rhododendron
    Opis:
    The effect of deficit irrigation imposed in July-August period on shoot growth and flower formation in container grown rhododendron in commercial nursery were assessed. Plants were exposed to three irrigation regimes based on potential evapotranspiration rates (100% ET0 - well-watered control plants, 75% ET0 - moderate drought and 50% ET0 - severe drought). The values of evapotranspiration were calculated using the Penman-Monteith model. The degree of drought had significant effect on the plant growth and water status of plants. Severe drought inhibited secondary shoot elongation compared to less stressful regime but did not affect flower formation. ‘Catawbiense Boursault’, ‘Nova Zembla’ and ‘Pearce’s American Beauty’ plants exposed to severe drought were shorter, respectively by 39, 45 and 86% than well-irrigated plants and two of the three cultivars ‘Catawbiense Boursault’ and ‘Pearce’s American Beauty’ produced fewer secondary branches (5.9 and 0.3) compared to control plants (9.2 and 1.7, respectively). Moderate drought did not affect plant growth but resulted in flower bud formation in ‘Nova Zembla’ and ‘Pearce’s American Beauty’s cultivars. Estimated water consumption by rhododendrons throughout the whole growing season was reduced by 15% for moderate and 25% for severe drought compared to control, well-watered plants. The results have significant implications for water conserving in commercial production of rhododendrons.
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, II/1; 509-519
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new approach to the method of drawing the Gaussen-Walter climate diagram
    Autorzy:
    Treder, W.
    Klamkowski, K.
    Wójcik, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/108532.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Meteorologii i Gospodarki Wodnej - Państwowy Instytut Badawczy
    Tematy:
    precipitation
    evapotranspiration
    temperature
    water balance
    drought
    opad atmosferyczny
    ewapotranspiracja
    temperatura
    bilans wodny
    susza
    Opis:
    In traditional climate diagrams a fixed coefficient (α) between temperature and precipitation has been adopted. It has been shown, however, that such an approach does not correctly describe the conditions of the climatic balance in Poland for the entire growing season. In this paper, a different solution to this problem is proposed - the introduction of a variable coefficient for individual months. The analysis of patterns of climatic variables over the year supports the hypothesis that in order to estimate ETo only by means of mean air temperature (ETo = α·T), the coefficient α should be variable for the individual months of the vegetative period. The values of the coefficient were empirically determined for use in calculating daily and monthly ETo. The newly proposed coefficients α were different from those determined with the standard climate diagram (published by Walter, Lieth 1967). The introduction of the variable value α into the computational model markedly improved the quality of the estimation of ETo. The mean bias errors determined for the estimation of ETo on the basis of temperature and the changing value of α were considerably lower than for the estimation of ETo with a fixed value of α. This provides the possibility of a more accurate presentation of periods of both excess and shortage of precipitation.
    Źródło:
    Meteorology Hydrology and Water Management. Research and Operational Applications; 2018, 6, 2; 3-9
    2299-3835
    2353-5652
    Pojawia się w:
    Meteorology Hydrology and Water Management. Research and Operational Applications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of plant water requirements during sequences of days without precipitation in 2011-2015
    Autorzy:
    Wójcik, K.
    Treder, W.
    Zbudniewek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/101013.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    rainfall
    evapotranspiration
    growing season
    Opis:
    This paper presents data on daily precipitation totals from six meteorological stations and the climatic water balance for the stations located throughout Poland in 2011-2015. The following sequences of days without precipitation were distinguished: from 11 to 15 days, from 16 to 20 days, and of more than 20 days. The number of precipitation-free sequences during the growing season in 2011-2015 was highly variable. Over the studied period, there were from 1.0 rainless sequence in Wtelno to 2.4 such sequences in Gołębiów per one growing season. The most frequently occurring were sequences of 11-15 days, while those of 16-20 days were less frequent. In the years under analysis, all of the different sequences occurred most frequently in July, and the least frequently in April. The highest numbers of sequences without precipitation were recorded in the south-east of Poland (Zakalniki, Gołębiów).
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, III/2; 1187-1200
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of plant water requirements during sequences of days without precipitation in 2011-2015
    Autorzy:
    Wójcik, K.
    Treder, W.
    Zbudniewek, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/101157.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    rainfall
    evapotranspiration
    growing season
    Opis:
    This paper presents data on daily precipitation totals from six meteorological stations and the climatic water balance for the stations located throughout Poland in 2011-2015. The following sequences of days without precipitation were distinguished: from 11 to 15 days, from 16 to 20 days, and of more than 20 days. The number of precipitation-free sequences during the growing season in 2011-2015 was highly variable. Over the studied period, there were from 1.0 rainless sequence in Wtelno to 2.4 such sequences in Gołębiów per one growing season. The most frequently occurring were sequences of 11-15 days, while those of 16-20 days were less frequent. In the years under analysis, all of the different sequences occurred most frequently in July, and the least frequently in April. The highest numbers of sequences without precipitation were recorded in the south-east of Poland (Zakalniki, Gołębiów).
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2017, II/1; 611-624
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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