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    Wyświetlanie 1-5 z 5
    Tytuł:
    Vertical distribution of dry mass in cereals straw and its loss during harvesting
    Autorzy:
    Zajac, T.
    Oleksy, A.
    Stoklosa, A.
    Klimek-Kopyra, A.
    Macuda, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/24095.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Opis:
    The study aimed at evaluating the distribution of mass in the straw of cereal species and also at assessing the straw yield and its losses resulting from the amount of the stubble left in the field. It was found empirically that the wheat culms are composed of five internodes, and in barley, triticale and oats of six. The highest straw mass per 1 cm was found in the second internode in both forms of wheat and winter triticale, whereas barley and oats gathered the highest weight in the first internode. In the southern part of Silesia species and forms of cereals differed in the straw yield, which can be arranged as follows, from the highest: winter wheat > spring wheat, winter triticale, winter barley, and oats > spring barley. Due to the specific distribution of dry matter in each of internodes of both wheat forms – winter and spring, they loose less stubble mass (22 and 24%, respectively), comparing to other cereals, especially spring barley, which loose 31% yield of straw in the stubble of 15 cm height.
    Źródło:
    International Agrophysics; 2013, 27, 1
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Field phenotyping of plant roots by electrical capacitance - a standardized methodological protocol for application in plant breeding: a Review
    Autorzy:
    Streda, T.
    Haberle, J.
    Klimesova, J.
    Klimek-Kopyra, A.
    Stredova, H.
    Bodner, G.
    Chloupek, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082875.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    root system
    drought tolerance
    varieties
    yield
    Opis:
    Due to the absence of a suitable method and standardized procedures, the root systems of plants have been evaluated to a much lesser extent than aboveground organs. The aim of this article is (i) to provide a detailed description and thus standardization of an upgraded procedure of electrical capacitance measurement for evaluating the size of the root system of plants in situ, which allows for a reassessment to be made during the growing season and subsequent harvest of seeds for the planting of selected progenies, (ii) to demonstrate, through a standardized methodological protocol, the applicability of root electrical capacitance measurement as a field phenotyping method for the selection of superior root systems to improve crop abiotic stress tolerance and resource efficiency, (iii) to suggest a standardized methodological protocol for the application of electrical capacitance measurements in breeding nurseries, and (iv) to discuss the methodological aspects, development and limitations of this method. A methodological overview of the use of electrical capacitance to measure plant root systems, which emerged from working groups directed by the author of this unique method, is presented along with a standardized protocol. An overview of the application of electrical capacitance measurements of roots in breeding is shown along with some examples of successful applications.
    Źródło:
    International Agrophysics; 2020, 34, 2; 173-184
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulating the partitioning of winter rape biomass by increasing the cutting height of stems
    Autorzy:
    Zając, T.
    Oleksy, A.
    Synowiec, A.
    Dacko, M.
    Klimek-Kopyra, A.
    Ratajczak, K.
    Kulig, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082513.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    agricultural harvest index
    harvest index
    stem
    diameter
    stubble mass
    yield
    Opis:
    In three seasons 2010-2013, field experiments with two hybrid cultivars of winter oilseed rape were conducted in three localities in Southern Poland, with the aim of assessing changes in the harvest index, as compared to the agricultural harvest index of winter oilseed rape, defined as the harvest index decreased by the stubble height in relation to three plant categories (small, medium and large). As a result, an increase in the height of the stubble of winter oilseed rape in the range of 0-60 cm led to an increase in the agricultural harvest index value by about 0.081 for cv. ‘Adam’, and by 0.078 for cv. ‘Poznaniak’. The agricultural harvest index values were changed mostly by the vegetative seasons (p < 0.001). An increase in the height of the stubble of winter oilseed rape by 10 cm increased the agricultural harvest index of small, medium and large plants by about 0.091, 0.075 and 0.073, respectively, as compared to the harvest index values. The linear correlation between the height of the stubble of the winter oilseed rape plants and their agricultural harvest index was significant (R2 = 0.97-0.99). Depending on the factor (cultivar, locality, vegetative season or plant category), an increase in the height of the stubble of winter oilseed rape by 10 cm contributed to an improvement in agricultural harvest index from 0.012 to 0.015 g g-1.
    Źródło:
    International Agrophysics; 2019, 33, 2; 241-253
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Accumulation of biomass and bioenergy in culms of cereals as a factor of straw cutting height
    Autorzy:
    Zając, Tomasz
    Synowiec, Agnieszka
    Oleksy, Andrzej
    Macuda, Jan
    Klimek-Kopyra, Agnieszka
    Borowiec, Franciszek
    Powiązania:
    https://bibliotekanauki.pl/articles/972719.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    culm
    internode
    yielding
    harvest index
    harvest index energy
    i
    Opis:
    Cereal straw is an important biomass source in Europe. This work assessed: 1) the morphological and energetic characteristics of culms of spring and winter cereals, 2) the energy deposited in the different aboveground parts of cereals, 3) losses of energy due to different cutting heights. The straw of winter and spring cereals was collected from arable fields during the seasons 2009/10 and 2010/11 in southern Poland. Detailed biometric measurements of culms and internodes were performed. The losses of straw biomass and energy were assessed during simulation of cutting the culm at different heights, up to 50 cm. Longer and heavier culms were developed by winter wheat and triticale and oat. Cutting of straw up to 10 cm did not lead to significant losses in straw yield. The total amount of energy in the culms was as follows: triticale > winter wheat > oat > spring wheat > winter barley > spring barley. Cutting the culms above 20 cm led to significant differences in terms of biomass energy between cereal species. The smallest losses of energy were recorded for spring and winter barley. Oat and barley accumulated the highest energy in grains.
    Źródło:
    International Agrophysics; 2017, 31, 2; 273-285
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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