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    Wyświetlanie 1-4 z 4
    Tytuł:
    Symbiotic Effectiveness of Rhizobium Leguminosarum Bv. Viciae With Pea Plants as Influenced by Azotobacter Chroococcum
    Autorzy:
    Martyniuk, S.
    Kozieł, M.
    Gałązka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/124760.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    Azotobacter
    Rhizobium
    field pea
    inoculants
    nodulation
    yield
    Opis:
    The aim of this work was to examine the effects of A. chroococcum on the prolifera-tion of R. leguminosarum bv. viciae (Rlv) in a solid-carrier inoculant and on symbiotic effectiveness of Rlv with pea plants grown under laboratory and field conditions. In a laboratory experiment it was found that proliferation of both bacterial species, Rlv and A. chroococcum, in the dual-culture inoculants was efficient, and that A. chroococ-cum had no adverse effects on the development of the rhizobia (Rlv) in the solid-carrier inoculant. In a pot experiment the highest number of nodules was detected on roots of pea plants inoculated with the dual-culture inoculant containing Rlv and A. chroococcum, slightly lower numbers on pea roots inoculated with the mono-culture inoculum of Rlv and almost no nodules were found on the roots of pea un-inoculated (control treatment) with the bacteria. In the micro-plot experiment conducted in the years 2011–2012 pre-sowing inoculation of pea seeds with the mono-culture inocu-lant of Rlv or with the mixed inoculant of Rlv and A. chroococcum slightly increased nodule numbers/plant, pod numbers/plant and seed numbers/pod, as compared to the un-inoculated control, but these differences were not reflected in pea seed yields/m2, which were similar in all treatments.
    Źródło:
    Journal of Ecological Engineering; 2015, 16, 4; 185-190
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The potential and pitfalls of exploiting nitrogen fixing bacteria in agricultural soils as a substitute for inorganic fertiliser
    Autorzy:
    Cummings, S. P.
    Humphry, D. R.
    Santos, S. R.
    Andrews, M.
    James, E. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/363190.pdf
    Data publikacji:
    2006
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    szczepionka
    żyzność gleby
    rolnictwo
    taksonomia
    Rhizobium
    Rhizobial inoculants
    soil fertility
    agriculture
    taxonomy
    rhizobia
    Opis:
    Nitrogen fixing bacteria have been used for centuries to improve the fertility of agricultural soils. Since the introduction of inorganic nitrogen (N) fertiliser that provides a reliable boost to crop yields whilst reducing land and labour requirements, the use of biological nitrogen fixation has been in decline. Recently, concerns have been expressed about the sustainability of inorganic N fertiliser application, however, there remain doubts about whether N2 fixing bacteria alone can provide agriculture with sufficient fixed N to feed a burgeoning global population. In this paper we review the current state of our knowledge regarding those diazotrophic bacteria that have a role to play in agriculture. We focus on our current areas of research, particularly, the importance of understanding the classification and mechanism of action of N2 fixing bacteria that are used in agricultural soils. We discuss the applications of N2 fixing bacteria that illustrate their potential to provide sustainable N, particularly focussing on Australian and South American agricultural systems where these bacteria are widely exploited to maintain soil fertility. We also identify problems with the use of bacteria as inoculants, including ineffective inoculation due to poor quality preparation, the use of appropriate isolates and issues with sustainability. We review the outlook for biological N fixation highlighting how molecular biology may enable the expression of N fixation in non-leguminous crops.
    Źródło:
    Environmental Biotechnology; 2006, 2, 1; 1-10
    1734-4964
    Pojawia się w:
    Environmental Biotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal Analysis of the ZnAl10 Alloy Modified by Ti Additions in AlTi5C0.15 and ZnTi3.2 Inoculants
    Autorzy:
    Piwowarski, G.
    Buraś, J.
    Krajewski, W. K.
    Krajewski, P. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/383098.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    alloy ZnAl
    grain refinement
    thermal analysis
    inoculants
    modified by Ti
    stop ZnAl
    ziarna
    analiza termiczna
    modyfikatory
    Opis:
    Cast alloys on the Zn matrix and of an increased Al content are characterised by good technological and mechanical properties, due to which they should meet special, more demanding requirements. However, the basic problem in these alloys technology, apart from a high tendency for gases pick-up and oxidation of liquid metals, is a tendency to form coarse-grained dendritic structures in castings solidifying in sand moulds, what - in turn - unfavourably influences their plastic properties [1, 2, 7, 11]. Therefore several treatments aimed at obtaining fine-grained structure and improving plastic properties are applied in these alloys technology. The presented study concerns the modification process of binary, middle-aluminium Zn alloys performed by additions of inoculants containing titanium and investigations of these modifications influence on the structure refinement degree. The Zn-10wt% Al (ZnAl10) alloy modified, before pouring into a sand mould, either by addition of the traditional inoculant i.e. Al-3wt% Ti-0.15wt% C (AlTi3C0.15 – TiCAl) or the new inoculant Zn-3.2wt% Ti (ZnTi3.2) was tested. Within investigations the thermal analysis was performed, especially cooling curves and their first derivatives, and also measurements by means of the differential scanning calorimetry (DSC), with a purpose of determining the modification influence on undercooling degree changes. Microstructures of the tested alloy were observed by the light microscopy (LM). The applied modification of middle-aluminium zinc alloys by AlTi3C0.15 and ZnTi3.2 inoculants causes a significant refinement of the alloy structure. Inoculants applied in investigations have a strong nucleating activity, which is confirmed by decreasing of undercooling and the temperature recalescence in cooling curves, which occurs simultaneously with grain refinements.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 4 spec.; 101-106
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jakość kiszonek z runi łąkowej z dodatkiem biologicznych stymulatorów fermentacji
    The quality of grass silage made with the addition of biological stimulants of fermentation
    Autorzy:
    Wróbel, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/339640.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    fermentacja
    inokulanty bakteryjne
    kiszonka
    stabilność tlenowa
    wartość pokarmowa
    aerobic stability
    bacterial inoculants
    fermentation
    grass silage
    nutritive value
    quality
    Opis:
    Celem badań była ocena jakości, wartości pokarmowej oraz przydatności żywieniowej kiszonek z podsuszonej runi łąkowej, zakiszanych w dużych belach cylindrycznych z dodatkiem wybranych biologicznych dodatków kiszonkarskich, zawierających kultury bakterii kwasu mlekowego. W kiszonkach oceniano zawartość suchej masy, wartość pH, skład chemiczny, liczebność wybranych mikroorganizmów oraz stabilność tlenową. Kiszonki testowano również w doświadczeniach żywieniowych na jałówkach. Zastosowane dodatki bakteryjne spowodowały zwiększenie zawartości kwasu mlekowego i octowego oraz zmniejszenie zawartości kwasu masłowego. Spośród obu zastosowanych dodatków większą efektywnością pod względem oddziaływania na proces zakiszania i jakość kiszonek charakteryzował się preparat mikrobiologiczno-enzymatyczny. Dodatki te nie miały jednak istotnego wpływu na stabilność tlenową kiszonek ani też na ich pobranie i przyrosty masy ciała zwierząt żywionych dawkami z udziałem tych pasz.
    An experiment was carried out to examine silage fermentation, aerobic stability and nutritive value of grass silage, which was ensiled in big bales either without (control) or with two bacterial silage additives containing homo- and heterofermentative lactic acid bacteria. Silages were analysed for dry matter, pH, chemical and microbiological composition and aerobic stability. Silage was also tested in feeding experiments on heifers. The addition of inoculants increased the lactic and acetic acid and decreased the butyric acid concentrations in silage. Among used additives higher efficiency in terms of impact on the ensilage process and improvement of silage quality was stated in case of microbiological-enzymatic additive. No significant improvement of aerobic stability was found. The additives had no effect on silage intake and mass gain of animals fed with tested silages.
    Źródło:
    Woda-Środowisko-Obszary Wiejskie; 2012, 12, 3; 211-225
    1642-8145
    Pojawia się w:
    Woda-Środowisko-Obszary Wiejskie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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