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    Wyświetlanie 1-6 z 6
    Tytuł:
    Response of spring barley to changes of compaction and aeration of sandy soil under model conditions
    Autorzy:
    Czyz, E.A.
    Tomaszewska, J.
    Dexter, A.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/26019.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    aeration
    oxygen diffusion rate
    soil
    sandy soil
    compaction
    yield
    root growth
    barley
    soil compaction
    soil bulk density
    spring barley
    model condition
    Źródło:
    International Agrophysics; 2001, 15, 1
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physical model for movement of water in split-root wheat plants
    Autorzy:
    Kirkham, M.B.
    Erickson, P.I.
    Powiązania:
    https://bibliotekanauki.pl/articles/26011.pdf
    Data publikacji:
    1997
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    nutrient solution
    Darcy's law
    split-root model
    wheat
    soil
    plant growth
    water
    physical model
    Ohm's law
    root
    Źródło:
    International Agrophysics; 1997, 11, 3
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Aggregate water stability of sandy and clayey loam soils differently compacted with and without wheat plants
    Autorzy:
    Balashov, E.
    Bazzoffi, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/26026.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    wheat plant
    water stability
    growth parameter
    root hair
    texture
    winter wheat
    root
    plant root
    sandy soil
    clay soil
    soil
    aggregation
    compaction
    loamy soil
    Źródło:
    International Agrophysics; 2003, 17, 4
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Growth of Populus tremula on CO2-enriched soil at a natural mofette site
    Autorzy:
    Vejpustkova, M.
    Thomalla, A.
    Cihak, T.
    Lomsky, B.
    Pfanz, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/41317.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    plant growth
    Populus tremula
    carbon dioxide
    soil
    root zone
    tree ring
    natural mofette
    mofette site
    aspen
    Opis:
    The main objective of the study was to evaluate inter-annual ring-width variation and cumulative growth of aspen (Populus tremula L.) trees growing on the spots of different soil CO2 concentration at natural mofette site. We hypothesized that growth rate of trees is affected by CO2 concentration within their rooting zone. The study site was situated in the flood plain of Plesná stream near Hartoušov (Western Bohemia). Trees growing in a pure aspen stand were selected according to the CO2-gas regime within their rooting zone. Five high [CO2] trees (10–25% CO2 in the soil) and five low [CO2] trees (up to 3% CO2 in the soil) were sampled. Stem growth analysis of each trunk was carried out to study growth pattern in detail. High and low [CO2] trees significantly differed in a growth rate. At the age of 25 years, the basal area of high [CO2] trees exceeded low [CO2] trees by 39 %. The positive effect of CO2 on annual increment was pronounced particularly in the years with optimal growing conditions. Results suggest that trees can be fertilized not only by elevated atmospheric CO2 but also when fed with CO2 via the roots.
    Źródło:
    Dendrobiology; 2016, 75
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wplyw zageszczenia gleby w warstwie podornej na wzrost pszenicy w doswiadczeniu fitotronowym
    Autorzy:
    Lipiec, J
    Nosalewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402581.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    pszenica
    wzrost roslin
    system korzeniowy
    gleby
    gestosc gleby
    badania fitotronowe
    komory fitotronowe
    warstwa podorna
    zageszczenie gleb
    wheat
    plant growth
    root system
    soil
    soil density
    phytotron research
    growth chamber
    subsoil
    soil compaction
    Źródło:
    Acta Agrophysica; 2001, 53; 101-107
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wplyw zlokalizowanego stresu tlenowego w glebie na rozwoj korzeni i czesci nadziemnych kukurydzy [ modelowe badania rizotronowe ]
    Effect of localized soil oxygen stress on root and shoot development in maize ( a model rhizotrone study)
    Autorzy:
    Bennicelli, R P
    Powiązania:
    https://bibliotekanauki.pl/articles/1628361.pdf
    Data publikacji:
    1994
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    agrofizyka
    gleby
    kukurydza
    system korzeniowy
    wzrost roslin
    badania modelowe
    badania rizotronowe
    dynamika rozwoju
    powietrze glebowe
    aeracja
    stres tlenowy
    agrophysics
    soil
    maize
    root system
    plant growth
    model research
    development dynamics
    soil air
    aeration
    oxygen stress
    Opis:
    The aim of the study was to test the usefulness of split rhizotrone technique to investigate the effect of localized soil anoxia on root and shoot developement, using maize as a test plant. The experiment was performed in 6 split rhizotrons enabling differentiation of soil aeration status in each half of the rhizotron by blowing nitrogen or air through them. The rhizotrone consists of two parts (each 16.6 dm3 in volume) inclined with an angle 60°. Each part is constructed of 1 mm thick stainless steel plate with a glass inner wall for root observation and has dimensions 84 cm x 40.5 cm x 5.0 cm. The rhizotrons were filled in with a brown loess soil material (Eutric Camhisol) from Ap horizon (from Eli/6wka, near Lublin). Maize seedlings with the roots splitted between the rhizotrone halves (eukivars KLG 2210 and DEA) were used in the experiments. Until the stress period the soil moisture tension of 20-80 kPa provided good water and air conditions. At a stage of 8 leaves three treatments were applied for a period of 7 days; an oxic control (P/P), a localized anoxia with 50% of the roots in nitrogen treated part (P/A), and a complete anoxia (A/A) with gas nitrogen in both parts. During the stress period diurnal elongation rates of primary roots (by marking positions of the tips each day) as well as distribution of two indicators of soil oxygenation status with depth viz. of oxygen diffusion rate (ODR) and of redox potential (Eh) in soil were measured. Shoot elongation rates were monitored with a potentiometer attached to the youngest leaf. Microscopic photographs of cross- sections of the caps and of apical meristems of primary roots at 400 magnification were made to show the changes in their anatomy due to anoxia. Chemical analysis of the shoots was performed after the stress period. For each cultivar the experiment was repeated three times. The investigations performed allowed the following conclusions to be drown out: 1. The split rhizotrone was shown to be a useful technique to study behaviour of the primary maize roots under localized anoxia conditions. 2. The ODR and Eh distribution with depth showed deterioration of oxygenation status (drop of ODR from control values above 100 |µg m-2 s-1 to the level 30 µg m-2 s-1, decrease of Eh from control values above 550 mV to the level, 300 mV) due to replacement of the soil air with gaseous nitrogen. 3. Root elongation rates under anoxic conditions (both under complete - A/A, and localized - A/P anoxia) were on the level of about 50% of the controle (P/P) during first 4 days and decreased practically to zero by the end of the stress period. In turn, the oxic part of the rhizotrone combined with localized anoxia treatment of the same plant (P/A) exhibited compensation effect and was characterized by stimulation of the root elongation rate up to 80%. This effect was especially distinct after 2-5 days of the stress duration and then tended to decrease. 4Distribution of the root mass in depth under anoxic treatments was characterized by concentration of about 80% of the root mass within first 10 cm of the soil. 5.Microscopic photographs of the root tips showed, under anoxic conditions, shorter meristematic zone, smaller number of mitosis, beginning of aerenchyma formation and dying of the cells at a distance of 1 mm from the root cap. 6.The shoots responded to applying anoxia to both rhizotrone parts by 20% reduction of the growth rate. 7.Both root and shoot elongation rates were correlated also with the temperature. 8.Oxygen deficiency in soil resulted in an increase of exchangeable manganese, what was reflected by its increased concentration in the maize shoots.
    Źródło:
    Acta Agrophysica; 1994, 03; 3-72
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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