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    Wyświetlanie 1-6 z 6
    Tytuł:
    Structural and Zn-binding features of ortho- and pyrophosphate modified soil metal-humus sorbents [features of P-modified humus sorbents]
    Autorzy:
    Kudeyarova, A Y
    Powiązania:
    https://bibliotekanauki.pl/articles/26561.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    phosphate fertilizer
    humic substance
    sorbent
    soil
    acid soil
    chemical compound
    humus ligand structure
    zinc
    metal-humus sorbent
    Źródło:
    International Agrophysics; 2002, 16, 3
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of various organic fertilisers on the heavy metal fractions in the soil. Part 3. Zinc, manganese and iron
    Autorzy:
    Filipek-Mazur, B
    Gondek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1449514.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    iron
    manganese
    chemical extraction
    soil
    organic material
    zinc
    soil property
    degraded ecosystem
    anthropogenic ecosystem
    organic fertilizer
    heavy metal
    Opis:
    The paper presents distribution of zinc, manganese and iron in fractions of soil treated with tannery sludge and compost of tannery sludge and peat, and, for the sake of comparison, the soil from a plot treated with farmyard manure (FYM), and mineral fertilisers. Total soil contents of zinc ranged from 38.0 to 47.3 mg kg-1 of soil. The share of mobile zinc forms ranged between 6.05-7.93%. Percentage of the exchangeable form was between 5.8-7.5% of the total Zn contents, while the share of forms bound with organic matter ranged between 10.7 and 12.7%. A considerable part of zinc was bound with manganese and iron oxides. Between 30.14- 43.72% of Zn were found in the residual form. Organic and mineral treatment influenced the share of easily soluble manganese compounds. It ranged between 15.6-19.7%. The least of manganese (1.0-2.0%) occurred in the compounds with crystalline iron oxides. The exchangeable form constituted between 3.4-4.2%, organic fraction accumulated slightly more. Manganese oxides retained the most of the element. Trace amounts of iron were revealed in the first three fractions. The biggest part of this metal was found in sparingly soluble compounds, mainly oxides (over 40%) and on residual fraction (over 30%).
    Źródło:
    Acta Agrophysica; 2001, 51; 215-220
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of various organic fertilisers on the heavy metal fractions in the soil. Part 1. Lead, copper and nickel
    Autorzy:
    Filipek-Mazur, B
    Mazur, K.
    Gondek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1449430.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    chemical extraction
    soil
    organic material
    soil property
    copper
    lead
    degraded ecosystem
    anthropogenic ecosystem
    nickel
    organic fertilizer
    agricultural chemistry
    heavy metal
    Opis:
    The present investigations aimed at determining the effect of various organic materials, i.e. farmyard manure (FYM), organic tannery sludge and compost of such sludge and peat on lead, copper and nickel fractions content in soil. Doses of peat compost and organic sludge were calculated according to the nitrogen amount per a FYM dose. After four years of experiment, fractions of Pb, Cu and Ni compounds were assessed in the soil from individual plots using the Zeien and Brummer's sequence chemical extraction method. Heavy metal contents were determined using a ICP-AES in JY 238 Ultrace apparatus. Lead accumulated mainly in the form bound with organic matter and with amorphic iron oxides. This metal distribution reveals its slight share in the mobile and exchangeable forms. Composts and sludge introduced into the soil did not affect any significant changes of the individual lead forms share as compared to FYM and NPK treated plots and the control. Some amount of copper occurred as mobile forms in all the soils. In the soil of all the treated plots, copper occurred mainly bound with organic matter and amorphic iron oxides. The basic share of nickel was found in the residual fraction bound with internal crystalline nets of initial elements. Beside the residual form, nickel was connected mainly with organic matter.
    Źródło:
    Acta Agrophysica; 2001, 51; 201-208
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of various organic fertilisers on the heavy metal fractions in the soil. Part 2. Chromium and cadmium
    Autorzy:
    Filipek-Mazur, B
    Gondek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1449480.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    chromium
    chemical extraction
    soil
    cadmium
    organic material
    soil property
    degraded ecosystem
    anthropogenic ecosystem
    organic fertilizer
    agricultural chemistry
    heavy metal
    Opis:
    The subject of the paper was to determine chromium and cadmium fractions in the soils treated with tannery organic materials. Methods, characteristics of experimental materials and the tested soils were presented in the first part of the paper. After four years of investigations soil samples were collected for the assessment of the total content of chromium and cadmium and their fractions. Results of a sequential chemical extraction confirmed literature data on the weak mobility of this metal in the soil. After application of the studied fertilisers, the share of the most mobile Cr fractions was slight. Iron oxides and residual fractions were most important for chromium accumulation. Cadmium mobility in the soil and its easy uptake by plants is related to a considerable share of mobile forms. A large share of mobile form was noticed in the analysed soils (54.5-68.3%). Exchangeable fraction bound smaller amounts of cadmium (6.8-13.2%). Similar amounts of cadmium were accumulated in the fractions bound to manganese oxides (8.5-19.6%). Organic matter did not contribute to this element binding and the amounts of cadmium stored in this fraction were 2.3-6.6%. Only very small amount of cadmium was accumulated in the form bound with the initial minerals.
    Źródło:
    Acta Agrophysica; 2001, 51; 209-214
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of lignite discard used in crop rotation on some chemical soil properties and spring triticale yield
    Autorzy:
    Grzeskiewicz, H
    Powiązania:
    https://bibliotekanauki.pl/articles/1449294.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    Polska
    chemical property
    triticale
    mineral fertilizer
    crop rotation
    spring triticale
    lignite
    soil
    yield
    soil property
    manure
    mineral fertilization
    potato
    degraded ecosystem
    anthropogenic ecosystem
    organic fertilization
    Opis:
    A static field experiment carried out on lignite discard, manure and mineral fertilisers in the years 1994 to 1998 was used to study effects on yield and sonie soil chemical properties of the applied variants of organic and mineral fertilisation: NPK; manure 30 t/ha + NPK; lignite discard 90 t/ha; lignite discard 90 t/ha + NPK. The present results show that lignite discard contributed to an increase of yield production potential of a good rye complex soil and brought about a significant increase of the triticale grain yield in comparison with the object with manure. The level of mineral fertilisation applied in the entire crop rotation, in relation to various variants of organic fertilisation (which was applied 3, 2 and 1 year before the examination) exerted a positive effect on pH and the content of basic nutrients in the soil.
    Źródło:
    Acta Agrophysica; 2001, 51; 67-70
    1234-4125
    Pojawia się w:
    Acta Agrophysica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reakcja tytoniu Virginia na niedobor azotu w glebie
    Autorzy:
    Kowalczyk-Jusko, A
    Koscik, B
    Powiązania:
    https://bibliotekanauki.pl/articles/803754.pdf
    Data publikacji:
    2006
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    niedobor pierwiastkow
    reakcje roslin
    sklad chemiczny
    gleby
    azot
    liscie
    dawki nawozowe
    tyton Virginia
    niedobor azotu
    nawozenie azotem
    element deficiency
    plant response
    chemical composition
    soil
    nitrogen
    leaf
    fertilizer dose
    Virginia cultivar
    tobacco
    nitrogen deficiency
    nitrogen fertilization
    Opis:
    Trzyletnie doświadczenie polowe (1996-1998) miało na celu określenie składu chemicznego liści tytoniu odmiany ‘Wiślica’ w warunkach zróżnicowanego nawożenia azotem. Na podstawie badań stwierdzono, że w warunkach niedoboru azotu liście tytoniu charakteryzują się niską zawartością N oraz wysokim poziomem K, Ca i suchej masy. Zastosowanie azotu w nawozach mineralnych, szczególnie w postaci saletry amonowej, powodowało wzrost zawartości N i stopniowe obniżanie poziomu pozostałych badanych składników. Skład chemiczny liści tytoniu ulegał zmianie w trakcie wegetacji roślin: zwiększała się zawartość suchej masy, malała koncentracja potasu, zaś stężenie azotu i wapnia miało charakter zmienny.
    The aim of the three years lasting (1996-1998) field experiment was focused to define tobacco (cultivar ‘Wiślica’) leave chemical composition under different nitrogen fertilization conditions. The research proved that with nitrogen deficiency in soil, tobacco leaves were characterised by a low nitrogen content and high potassium, calcium and dry matter content. Nitrogen mineral fertilizers, particularly ammonium nitrate, caused an increase of nitrogen content and progressive decrease of other monitored components. Chemical composition of tobacco leaves changed during vegetation period: dry matter content incread, potassium content decreased and nitrogen and calcium concentration had variable characteristics.
    Źródło:
    Zeszyty Problemowe Postępów Nauk Rolniczych; 2006, 509; 167-172
    0084-5477
    Pojawia się w:
    Zeszyty Problemowe Postępów Nauk Rolniczych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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