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    Wyświetlanie 1-4 z 4
    Tytuł:
    Biophysical self-regulation in the fertility of chernozem soil under soil-conservation agriculture
    Autorzy:
    DEMYDENKO, Aleksandr
    TONKHA, Oksana
    Powiązania:
    https://bibliotekanauki.pl/articles/455611.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Rzeszowski
    Tematy:
    ecological-trophic groups of microorganisms
    the typical black soil
    micropores
    soil moisture
    Opis:
    Investigated the microbial transformation of organic matter in the typical black soil under the influence of different types of processing. Found that soil protection technology inhibits the mobilization processуі, as evidenced by reduced mineralization coefficients, improve and optimize the ratio of structural categories of micropores in 0–30 cm layer of chernozem, thereby reducing the rate of evaporation of soil moisture by 25–30%. Stage of moisture in the soil with minimum soil moisture corresponds to the flow in the capillary, due to the enhancement of mass transfer in the system of solid phase – soil moisture, soil air. When easily-movable moisture condition occurs stationary convective motion of the flow of matter – is self-organization of mass transfer, which may be increased by 150–200%.
    Źródło:
    Edukacja-Technika-Informatyka; 2014, 5, 1; 373-378
    2080-9069
    Pojawia się w:
    Edukacja-Technika-Informatyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fertilizers and Pesticides Impact on Surface-Active Substances Accumulation in the Dark Gray Podzolic Soils
    Autorzy:
    Litvinova, Olena
    Tonkha, Oksana
    Havryliuk, Oleksandr
    Litvinov, Dmytrо
    Symochko, Lyudmyla
    Dehodiuk, Stanislav
    Zhyla, Roman
    Powiązania:
    https://bibliotekanauki.pl/articles/27323836.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    mineral fertilizer
    soil
    pesticides
    anionic surfactants
    non-ionic surfactants
    crop rotation
    biogenic elements
    agroecosystem
    Opis:
    The article reports on a study that examined the impact of agrochemicals on the levels of surfactants in soil. Specifically, the study found that the use of mineral fertilizers and pesticides led to an increase in the levels of anionic surfactants (ASA) in the soil. Furthermore, the simultaneous application of fertilizers and pesticides had a greater effect on ASA levels than either factor alone. The use of pesticides also led to an increase in non-ionic surfactants (NSA), while the use of fertilizers resulted in a decrease in NSA levels. The study also found that the increase in the levels of mobile forms of key nutrients in the soil was associated with the accumulation of ASA in lower layers of the soil profile.The amount of alkaline hydrolyzed nitrogen under the low protection system increased by 3.0–23.2 mg kg-1 soil, mobile phosphorus by 14.0–144.0 mg P2O5, and exchangeable potassium by 9.0–222.0 mg K2O per kg soil, compared to the control. With the complex use of fertilizers and pesticides in one block, a trend of increasing mobile forms of nutrients in the soil was observed. The distribution of ASA amount in the soil profile is descending. The clear presence of ASA was established only in the soil layer of 0–40 cm. An increase of ASA content in the soil due to the use of agrochemicals and fertilizers is observed up to a depth of 60–80 cm. Using biological elements in agriculture significantly reduces the amount of these substances in the soil profile.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 7; 119--127
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spatial Heterogeneity of Soil Silicon in Ukrainian Phaozems and Chernozems
    Autorzy:
    Tonkha, Oksana
    Butenko, Andrii
    Bykova, Olga
    Kravchenko, Yuriy
    Pikovska, Olena
    Kovalenko, Vitalii
    Evpak, Iryna
    Masyk, Ihor
    Zakharchenko, Elina
    Powiązania:
    https://bibliotekanauki.pl/articles/1839084.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    silicon
    chernozem
    fertilization
    exchangeable cation
    pH
    soil texture
    Opis:
    This study investigated the spatial variability of the soil silicon content in relation with topography, parent materials, soil texture, soil organic matter, exchangeable cations and pH. Using the experimental data from two longterm sites in the Forest-Steppe area of Ukraine, the SiO2 content was estimated in 60 samples taken from a soil depth 0–25 cm. The accumulation of SiO2 was significantly greater in the soils formed in footslopes. A content of extractable silicon fraction significantly increased from a sandy loam(366–465 mg•kg-1) to medium(670–697 mg•kg-1) and heavy(506–849 mg•kg-1) textured soils. The highest amount of available silicon content was found in the soils containing: 35.0–39.9% of physical clay fraction (< 0.01 mm dia) in Hrytsiv area – 143.0 ± 46 mg•kg-1 and < 25.0% of physical clay fraction in Khrolyn area – 125.0 ±6 mg•kg-1. A significant relationship was found between pHKCl, P2O5, K2O, Mg and both forms of SiO2. There was almost no correlation between available/ extractable SiO2 and exchangeable Ca and ∑ Ca+Mg. Our studies found the best correlation between extractable SiO2 and spring barley yield (r = 0.651; P = 0.041), as well assoluble SiO2 and corn for grain yield (r = 0.514; P = 0.128). No significant relationships were found for sugar beet, winter wheat, sunflower.
    Źródło:
    Journal of Ecological Engineering; 2021, 22, 2; 111-119
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Professional Adaptation of the Future Agronomist as a Psychological and Pedagogical Problem
    Autorzy:
    Tonkha, Оksana
    Mehbaliyeva, Nataliia
    Nagorniuk, Oksana
    Minyalo, Nadiya
    Powiązania:
    https://bibliotekanauki.pl/articles/2040610.pdf
    Data publikacji:
    2019-12-29
    Wydawca:
    Uniwersytet Rzeszowski
    Tematy:
    higher vocational education
    professional adaptation of future agronomists
    Bolognaprocess
    psychological and pedagogical problems
    Opis:
    The article gives a theoretical analysis of the problem of professional adaptation of future specialists-agrarians during their studying in the institutions of higher education. It is singled out the psychological, sociological, socio-pedagogical and pedagogical approaches to the research problem. The correlation between the leading categories of pedagogy and the concept of professional adaptation within the framework of the pedagogical approach to the problem of professional adaptation of future agronomists in the process of studying is established.
    Źródło:
    Edukacja-Technika-Informatyka; 2019, 10, 4; 274-253
    2080-9069
    Pojawia się w:
    Edukacja-Technika-Informatyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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