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    Tytuł:
    Basic soil chemical properties after 15 years in a long-term tillage and crop rotation experiment
    Autorzy:
    Neugschwandtner, R.W.
    Szakova, J.
    Pachtrog, V.
    Tlustos, P.
    Cerny, J.
    Kulhanek, M.
    Kaul, H.-P.
    Euteneuer, P.
    Moitzi, G.
    Wagentristi, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082653.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    tillage
    soil depth
    long-term experiment
    soil
    properties
    no-till
    Opis:
    Basic soil chemical properties were assessed in a long-term tillage and crop rotation experiment 15 years after its establishment on a Chernozem in Raasdorf (Austria) with four tillage treatments – mouldboard ploughing, no-till, deep conservation tillage and shallow conservation tillage – and two crop rotations. The following parameters were assessed: pHCaCl2, pHH2O, electrical conductivity, cation exchange capacity, total nitrogen, total organic carbon and total carbon. Among which, pHCaCl2, pHH2O, and total carbon increased with soil depth while electrical conductivity, cation exchange capacity, total nitrogen, and total organic carbon decreased with soil depth. The differences between tillage treatments occurred after 15 years in the upper soil layer from 0-5 cm with higher values of electrical conductivity under no-till, deep conservation tillage and shallow conservation tillage than with mouldboard ploughing, higher values of cation exchange capacity and total nitrogen for no-till than for mouldboard ploughing (with deep conservation tillage and shallow conservation tillage showing intermediate values) and more total organic carbon for no-till and deep conservation tillage than for mouldboard ploughing. At a 5-10 cm depth, electrical conductivity was higher for no-till than for mouldboard ploughing. Values of pHCaCl2 and pHH2O did not differ between tillage treatments in any soil layer. In deeper soil layers, tillage did not affect the analysed parameters. Crop rotation did not affect any of the analysed soil chemical properties.
    Źródło:
    International Agrophysics; 2020, 34, 1; 133-140
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of tillage alteration on soil water content, maize crop water potential and grain yield under subtropical humid climate conditions
    Autorzy:
    Chen, J.
    He, Y.
    Li, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082993.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    soil penetration resistance
    occasional deep tillage
    no-till
    seasonal drought
    Opis:
    Seasonal drought stress is common in farmland even under humid climate conditions. Low soil water content and high penetration resistance in clayey soil are both factors that limit crop growth, which is significantly affected by tillage. In a twoyear (2014-2015) field experiment conducted in Hubei, China, the effects of conventional tillage, along with occasional deep tillage and no-till, on the soil water content and penetration resistance values of red soil and on the crop water potentials of the maize crop (Zea mays L.) were tested. Compared to conventional tillage, deep tillage reduced the difference in the soil water characteristic curve between 0-40 cm soil layers, resulting in a more loose and homogeneous topsoil. The deep tillage significantly (p<0.05) decreased soil penetration resistance, increased soil-available water content and soil water content during the dry period, promoted an increase in maize root density by 11.4~31.6%, and increased the water potential of the maize root and leaf during most growth stages. In contrast, the effect of no-till was opposite to that of deep tillage, reducing maize grain yield by 25.3~26.3%. The results confirmed that no-till is not appropriate for the clayey red soil but rather that tillage is needed. This suggests that occasional deep tillage is helpful in mitigating seasonal crop drought stress under the conditions of a humid climate.
    Źródło:
    International Agrophysics; 2021, 35, 1; 1-9
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling soil organic carbon sequestration under crops for biofuels in Poland
    Autorzy:
    Krasuska, Ewa
    Faber, Anton
    Jaros, Zuzanna
    Kaczyński, Radosław
    Powiązania:
    https://bibliotekanauki.pl/articles/2168313.pdf
    Data publikacji:
    2016-12
    Wydawca:
    Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
    Tematy:
    soil organic carbon
    carbon sequestration
    tillage
    no-till
    modelling
    CO2
    Opis:
    The soil organic carbon (SOC) stocks have become of special importance for sustainable biofuels production. We focused on SOC changes in high activity clay soils in Poland un- der arable crops for biofuels production. The SOC sequestration values were calculated using a DNDC model with four different tillage systems. The initial SOC stocks in Poland were highly spatially variable with values in the range of 35–97 t C ha-1 . The simulated regional SOC sequestration rates in topsoils ranged from -0.17 to 0.32 t C ha-1 year-1 in full tillage, 0.36–0.73 t C ha-1 year-1 in reduced tillage, and 1.69–3.22 t C ha-1 year-1 in no-tillage. For full tillage with straw incorporation the results for SOC sequestration were similar to those of the reduced tillage. The uncertainties of the estimations were provided, in addition to the length of the periods of SOC sequestration. The results for Poland are relatively high comparted to those from literature which might suggest that DNDC overestimated the SOC stocks in our study. Although DNDC was based on long-term tests and proved adequate SOC simulations in many studies, still a comprehensive model validation is required in a field scale with relevant SOC measurements, climatic, soil and crop data.
    Źródło:
    Polish Journal of Agronomy; 2016, 27; 126-136
    2081-2787
    Pojawia się w:
    Polish Journal of Agronomy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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