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    Wyświetlanie 1-5 z 5
    Tytuł:
    Effect of differentiated phosphorus and potassium fertilization on maize grain yield and plant nutritional status at a critical growth stage
    Autorzy:
    Bak, K.
    Gaj, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/14822.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    maize
    phosphorus fertilization
    potassium fertilization
    grain yield
    plant
    nutritional status
    critical stage
    growth stage
    Opis:
    Optimal nutrition of cultivated plants at critical growth stages is of great importance for the achievement of full crop yield potential. The aim of this study was to assess the maize yield response and plant nutritional status at a critical stage of growth (BBCH 17) under the most favourable and reduced fertilization with phosphorus and potassium. It was assumed that the nutritional status of maize at BBCH 17 stage significantly influenced the plant growth and yielding. The hypothesis was tested in a one-factorial trial, carried out on the maize variety Veritis in 2007-2011, which was a part of a long-term study started in 2000 according to a randomized complete block design. The factor tested comprised different phosphorus and potassium doses applied at constant levels of nitrogen and magnesium fertilization. The yields of maize significantly differed between the treatments and in relation to the control. In each year, maize responded with a lower yield to the no-phosphorus treatment when compared to the no-potassium treatment. Irrespective of the fertilization variants, the content of the nutrients tested (except iron) was below the standard value. A significant relationship was shown between the nutritional status of maize at the stage of 7 leaves unfolded (BBCH 17) and grain yield. The coefficients of determination ranging from 59% to 94% showed that, irrespective of which treatment was applied, the mineral nutrient content in maize leaves at BBCH 17 stage had the strongest influence on the maize yield.
    Źródło:
    Journal of Elementology; 2016, 21, 2
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of pre-sowing stimulation of seeds on changes in chemical composition and sucrose content in sugar beet
    Wpływ przedsiewnej stymulacji nasion na zmiany składu chemicznego i zawartość cukru w buraku cukrowym
    Autorzy:
    Prosba-Bialczyk, U
    Szajsner, H.
    Spyrka, B.
    Bak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/15444.pdf
    Data publikacji:
    2012
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Opis:
    The changes of chemical composition and sucrose content in sugar beet beet after seeds stimulation were investigated. The seeds came from the energ’hill technology (Eh) and were subject to laser irradiation. The experiments were conducted in the laboratory and in field conditions in 2008-2010. In the experiment the researchers used the seed material of Tiziana variety (sugar type) in standard version (control) and stimulated: prepared in the energ’hill technology and irradiated. Irradiation with laser light was applied in the following doses: the 5-time multiplied (in the study marked as D5) and 7-time multiplied (in the study D7) of the basic dose 2.5 10–1J cm–2. The content of nitrogen, phosphorus, potassium, sodium, magnesium and calcium in leaves and roots samples collected in the first weeks of July, August, September and October. Pre-sowing stimulation with use of energ’hill technology and laser light irradiation resulted in an increase in leaf concentration of nitrogen, potassium, sodium and magnesium and the content of these elements positively correlated with sucrose content of mature roots. Pre-preparation (sprouted) clusters energ’hill technology and laser irradiation had a positive effect on sucrose content and its performance.
    Źródło:
    Journal of Elementology; 2012, 17, 4
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of seed stimulation on germination and sugar beet yield
    Autorzy:
    Prosba-Bialczyk, U.
    Szajsner, H.
    Grzys, E.
    Demczuk, A.
    Sacala, E.
    Bak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/26433.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Opis:
    Germination and sugar beet yield after seed stimulation were investigated. The seeds came from the energ'hill technology and were subject to laser irradiation. The experiments were conducted in the laboratory and field conditions. Lengthening of germinal roots and hypocotyls was observed. A positive effect of the stimulation on the morphological features was observed for the Eh seeds and laser irradiation applied in a three-fold dose. The energ'hill seeds exhibited a significantly higher content of carotenoids in seedlings and an increase in the content of chlorophylls. Laser light irradiation favourably modified the ratio of chlorophyll a to b. The leaves and roots of plants developed from the energ'hill and irradiated seeds were characterized by higher dry matter content thanin non-stimulated seeds. Seed stimulation had a positive influence on yielding and the saccharose content.
    Źródło:
    International Agrophysics; 2013, 27, 2
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Magnesium and calcium distribution in maize under differentiated doses of mineral fertilization with phosphorus and potassium
    Autorzy:
    Gaj, R.
    Budka, A.
    Gorski, D.
    Borowiak, K.
    Wolna-Maruwka, A.
    Bak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/14113.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Źródło:
    Journal of Elementology; 2018, 23, 1
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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