Wszystkie pola: Gondek, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: FT-IR analysis and the content of phenolic compounds in exogenous organic matter produced from plant biomass
Autorzy:: Mierzwa-Hersztek, M.
Gondek, K.
Nawrocka, A.
Pinkowska, H.
Bajda, T.
Stanek-Tarkowska, J.
Szostek, M.
Powiązania:: https://bibliotekanauki.pl/articles/15427.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Źródło:: Journal of Elementology; 2019, 24, 3
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Changes in the soil content of organic carbon nitrogen and sulphur in a long-term fertilisation experiment in Czarny Potok (Poland)
Autorzy:: Kopec, M.
Gondek, K.
Mierzwa-Hersztek, M.
Jarosz, R.
Powiązania:: https://bibliotekanauki.pl/articles/1192780.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: acidification
macronutrient ratios
meadow sward yield
Opis:: The paper discusses fluctuations, including the underlying causes, in the organic carbon, nitrogen and sulphur content of meadow sward from a fertiliser experiment set up on a mountain meadow in 1968. The experiment included 7 fertilising objects with full NPK fertilisation and with control treatment. The area of the experimental plots was 42 m2 (6 m x 7 m). The experimental treatments involved the following fertilisation regimes: nitrogen alone, phosphorus alone, phosphorus and potassium, nitrogen (at two doses of application, and until 2004 in two forms: ammonium nitrate and urea), phosphorus and potassium. Since 1985, the experiment has been conducted in two series: unlimed and limed. Botanical composition and plant yield formed under experimental conditions strongly affected the soil properties. The following were determined in the soil: pH, hydrolytic acidity and total forms of carbon, nitrogen, and sulphur. Soil properties are important for sustainable agriculture and conservative livestock rearing. Changes in acidification were primarily caused by fertilisation with nitrogen, while liming conducted every 10 years significantly counterbalanced this negative effect. Mineralisation of organic matter caused by liming increased the total nitrogen content, hence a significantly narrower C:N ratio was observed. The C:N and C:S ratios cannot be treated as valid indicators of grassland management practice. The reason is the high dynamic of sulphur, nitrogen and carbon cycles caused not only by liming, but also by diversity in plant yield.
Źródło:: Journal of Elementology; 2021, 26, 1; 33-46
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effect of processing temperature applied to mixtures of sewage sludge and plant waste on the content of macro- and microelements in the product and on the luminescence of Vibrio fischeri
Autorzy:: Gondek, K.
Kopeć, M.
Baran, A.
Głąb, T.
Powiązania:: https://bibliotekanauki.pl/articles/961374.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Opis:: The aim of the research was to determine the effect of temperature and addition of plant material to sewage sludge on the efficiency of thermal treatment of biomass. Another goal was to assess the content of selected macro- and microelements in the end product, taking into account the possibility of their agricultural use. The input material for the research consisted of anaerobically stabilized, dehydrated sewage sludge. The experimental design consisted of: sewage sludge + bark (SS + B), sewage sludge + wheat straw (SS + WS), sewage sludge + sawdust (SS + S). The mixtures were thermally treated in a chamber furnace, under anaerobic conditions. Two temperature settings were applied: 300°C and 600°C; the exposure time in both cases was 15 minutes. Thermal, anaerobic transformation of organic matter at a temperature up to 600°C causes even a twofold increase in the content of ash elements in the product. An increase in the nitrogen content can only be obtained under conditions of low-temperature transformation of a mixture of sewage sludge with organic materials. Using the temperature of 600°C for the transformation of organic materials caused an increase in the content of easily hydrolyzing nitrogen as well as forms of phosphorus, potassium and sodium extracted with water in comparison to mixtures transformed at the temperature of 300°C. Of the analyzed trace elements, only the content of water-soluble forms of zinc (apart from mixture of sewage sludge and straw) increased along with the increase in temperature of the transformation process, which indicates higher zinc bioavailability. In terms of fertilization, as a result of increasing the processing temperature applied to sewage sludge with the addition of different mass of plant origin, a lower value product is obtained due to nitrogen losses and a decrease in the availability of some elements for plants. The extracts from the mixtures were not toxic to bacteria. Stimulation of the luminescence of V. fischeri was observed in the research.
Źródło:: Journal of Elementology; 2016, 21, 4
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Ways of increasing the magnesium content in sward from a long-term fertilizer experiment
Autorzy:: Kopec, M.
Mierzwa-Hersztek, M.
Gondek, K.
Powiązania:: https://bibliotekanauki.pl/articles/14472.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: magnesium content
sward
meadow
mountain meadow
long-term fertilizer experiment
magnesium
fertilization
liming
uptake
temperature
precipitation
pH
Opis:: The paper discusses fluctuations, and their underlying causes, in the magnesium content of meadow sward from a fertilizer experiment set up on a mountain meadow in 1968. The fertilization experiment comprised 8 different treatments, with the following modifications: liming, magnesium and microelement fertilization and a change in the sward use made during the experiment so as to regenerate the sward and to improve the yielding potential. In the initial period, magnesium concentrations in the sward were assessed using the ASS technique after dry mineralization of samples and dissolution of the residue in diluted nitric acid. Later, the ICP technique was applied, including an internal reference sample for the methods. The cultivation measures caused variations in magnesium concentrations in the sward, depending on a number of factors, among which direct fertilization was not the most significant one. For example, the ambient temperature during the plant growing season strongly influenced the magnesium content, irrespectively of a cut. There was no effect of rainfall of the magnesium content, although atmospheric precipitation was able to raise considerably the charge of this element. In the second cut and under neutral soil pH, higher concentrations of magnesium were noted in the sward. This could have resulted from either the lower second swath yielding or the optimum conditions for the uptake of magnesium by the sward that occurred during its growth. The investigation results failed to provide an unambiguous answer to the question whether magnesium fertilization affected the concentrations of this element. Nonetheless, in order to maintain the production of valuable fodder it is essential to return systematically the elements taken up with plant yield to the soil. In intensively managed meadows, amounts of magnesium removed from the soil with the harvested biomass can be as high as several kilograms per hectare.
Źródło:: Journal of Elementology; 2015, 20, 4
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The effectiveness of biochar in mitigating changes in the chemical properties of sandy soil treated with various chemicals
Autorzy:: Gondek, K.
Mierzwa-Hersztek, M.
Kopec, M.
Losak, T.
Bennewitz, E.
Spandel, A.
Kuc, K.
Powiązania:: https://bibliotekanauki.pl/articles/1192382.pdf
Data publikacji:: 2020
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: biochar
soil
sorption complex
pH
electrical conductivity
heavy metal
Opis:: The progressive degradation of soils is a recently increasing environmental problem. The risk of soil degradation may be associated, for example, with landslides, flooding, soil erosion. However, these are relatively rare phenomena compared to the risk of chemical degradation caused by human activity. Given the limited research on the positive effect of miscanthus biochar on soil properties, a study was carried out aimed at determining changes in pH, electrical conductivity, sorption properties, and mobility of selected heavy metals in sandy soil treated with various chemicals. Biochar used in the study was produced at a temperature of 300°C. The addition of biochar to soil generally increased the pH value, regardless of the type of chemical degradation. The study revealed a decrease in the hydrolytic acidity value and, at the same time, no significant changes in the content of alkaline cations and sorption capacity of the biochar-treated soil. The best effect on reducing the mobility of trace elements was achieved by adding biochar to the soil supplemented with acidifying substances. Bearing in mind the current agricultural and environmental problems, there is a need to increase the effectiveness of biochar and to direct its action to improve specific soil properties.
Źródło:: Journal of Elementology; 2020, 25, 3; 1045-1058
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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