Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 29

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  soil solution
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Granulometric composition of soil as a factor determining concentration of ions in soil solution

100%
Rutkowska B., Szulc W., Labetowicz J.
Journal of Elementology
|
2005
|
tom 10
|
nr 4 Suppl.1
89-90
2

Indicatory properties of soil solutions in the characteristics of forest site quality

100%
Porebska G., Sienkiewicz J., Ostrowska A.
Polish Journal of Environmental Studies
|
2004
|
tom 13
|
nr 5
We have compared the mean contents of Al, combined Ca + Mg as well as of the total content of elements (Ca, Mg, K, Na, Al, Fe, Mn, NH4, Cl, SO4 and NO3) in solutions obtained for the Ofh, AE and Bv soil horizons. Soils were sampled in dry coniferous (Bs), fresh coniferous (Bsw) and mixed deciduousconiferous (BMsw) forest sites. Higher values of combined Ca and Mg content and of total element content were found in the soil solution of all horizons in BMsw sites than in those in Bs and Bsw sites. The amount of Al migrating to aqueous solution is lower in Ofh horizons of BMsw sites than in Bs and Bsw sites. The soil sorption complex of BMsw sites, likewise respective soil solutions, is more abundant in combined bivalent basic cations than that of Bs and Bsw sites. Exchangeable Al content in the Ofh horizon is lowest in BMsw site, and highest in Bsw site. No direct effect was found on the forest floor vegetation on the concentration of soil solutions (expressed as element sum) or on the ionic composition of these solutions taking into account the elements analyzed.
3

The effect of the content of organic carbon in the soil on the chemical composition of the soil solution

88%
Rutkowska B., Szulc W., Labetowicz J.
Polish Journal of Soil Science
|
2004
|
tom 37
|
nr 2
On the basis of 136 soil samples collected from an area of Poland, the effect of the content of organic carbon in the soil on the chemical composition of soil solution was analyzed. With an increase of organic carbon content in the soil, a significant increase of calcium and to a lesser extent of magnesium, bicarbonates and phosphates in the soil solution was observed. No correlation was noted between the organic carbon soil content and the concentration of aluminium in the soil solution. The contents of organic matter in the soil influenced the concentrations of microelements in the soil solution more than the macroelements content in this soil. The concentrations of manganese, iron, zinc and copper were positively correlated, the concentration of molybdenum was negatively correlated and the concentration of boron did not show any relationship with the soils content of organic carbon.
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Effect of nitrogen and potassium fertilisation on the content of ions in the soil solution

75%
Murawska B., Spychaj-Fabisiak E.
Journal of Elementology
|
2009
|
tom 14
|
nr 4
The aim of the present research was to evaluate whether or not, and to what extent, exclusive mineral fertilisation affects the content of water-soluble ions determining the soil salinity. The soil was sampled from the arable layer of a multi-year field experiment carried out in 1974-2007. The research involved differentiated nitrogen fertilisation (factor I, n=3) and potassium fertilisation (factor II, n=4). The content of water-soluble ions was defined in water extract, in the soil to water ratio of 1:5; cations K+, Na+, Ca2+ were determined with the method of emission spectrometry and Mg2+ – with atomic absorption. Anions were analysed with the argentometric (Cl-) and nephelometric (SO4 2-) methods. In addition, electrolytic conductivity (R) was tested with the conductometric method, based on which the salt concentration in the solution (C) and the ionic strength (I) were calculated. The present results were statistically verified. The prolonged application of intensive nitrogen and potassium fertilisation (32 years) significantly differentiated the content of cations: K+, Na+, Ca2+ and Mg2+ as well as anions: Cl- and SO4 2- in soil solution. The contents of K+, Na+, Ca2+, Mg2+ in the soil solutions differed and fell within the range of (mean value) 0.136-0.507 (0.281) K+, 0.398-0.555 (0.472) Na+, 1-2.192 (1.350) Ca2+ and 0.211- 0.365 (0.272) Mg2+ mmol(+)⋅kg-1. The highest nitrogen dose significantly limited the concentration of SO4 2- in the soil solution, while the different doses of potassium did not result in such significant changes in the concentration of the above ions. The content of chlorine ions in the soil solution did not depend significantly on differentiated nitrogen and potassium fertilisation. No effect of the long-term mineral fertilisation on soil salinity was noted.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The influence of soil acidity on aluminium and mineral nutrients concentrations in soil solution at different soil water potentials

75%
Siecinska J., Wiacek D., Nosalewicz A.
Acta Agrophysica
|
2016
|
tom 23
|
nr 1
The aim of the research was to analyse the impact of soil water potential on the concentration of aluminium and selected mineral nutrients in soil solution. Soil acidification is a natural process accelerated by agriculture, and one of the most important factors limiting crop production worldwide. Concentrations of aluminium and selected mineral nutrients in solutions obtained from soil at initial pH 4.2 and after liming at various soil water potential were measured in centrifuged soil solution. Our results showed a significant gradual increase in the concentration of Al and most of mineral nutrients (Ca, Mg and P) with decreasing soil water potential from −3.5 kPa to −0.205 MPa. The results are important in the evaluation and interpretation of plant response to aluminium toxicity when accompanied by changes in water availability.
6

Chemical composition of soil solutions from forest lands under anthropogenic pressure: comparing two extract recovery methods

75%
Spychalski W., Walna B., Kurzyca I.
Polish Journal of Environmental Studies
|
2008
|
tom 17
|
nr 3
389-395
Investigations were carried out on sandy forest soils from Wielkopolski National Park (west-central Poland), which have been exposed for a long time to anthropogenic pressure. Two comparative extract recovery methods were performed for aqueous soil extracts (ME) at ratios 1:1, and those obtained from so-called saturated paste (MP). Recovered extracts were analyzed for sodium, potassium, magnesium, calcium, aluminium, chloride, fluoride, nitrate and sulphate concentrations, at various depths of two slightly different soil profiles. Higher levels of alkaline cations were obtained in extracts recovered at ratios 1:1, in the case of sandy soils along the entire profile, whereas in profiles with variable lithology, the granulometric composition clearly affected the mechanism of ion release. The patterns of changes in the contents of chlorides and sulphates were similar to those of calcium and magnesium, while fluoride levels in the topsoil differed significantly, depending on the method applied. Differences between the two methods were also significant in the case of aluminium content. The elaboration of aluminium toxicity indices should consider such approaches.
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Influence of soil fertilization on concentration of microelements in soil solution of sandy soil

75%
Rutkowska B., Szulc W., Labetowicz J.
Journal of Elementology
|
2009
|
tom 14
|
nr 2
349-355
The study was carried out to asses the influence of soil mineral fertilization, manure application and soil liming on changes in the concentration of microelements (B, Cu, Fe, Mn and Zn) in soil solution. The tests were performed on samples of sandy soil collected from long-term fertilization experiments being conducted on lessive soil of the granulometric structure of clayish sand. Soil solution was prepared with the suction method. The concentration of microelements in soil solution was determined by means of the ICP method. The results showed an increase in Fe, Mn, Zn and Cu and a decrease in B and Mo in soil solution when soil was fertilized with nitrogen. The concentration of microelements in soil solution was not significantly influenced when soil was fertilized with phosphorous and potassium. Liming had a significant effect on a decrease in the concentration of Fe, Mn, Zn and Cu and an increase in B and Mo in soil solution. Soil application of manure significantly increased the concentration of microelements in soil solution.
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Impact of soil acidification on heavy metal concentrations in the soil solution

75%
Csillag J., Lukacs A., Bujtas K., Nemeth T.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
1998
|
tom 456
9

Environmental factors effecting the concentration of microelements in the soil solution of Polish arable soils

75%
Labetowicz J., Rutkowska B.
Polish Journal of Soil Science
|
2002
|
tom 35
|
nr 1
Based on a large number of samples collected from within Polish territory, the concentration of microelements (Fe, Mn, Zn, Cu, B, and Mo) in a soil solution of arable soils of Poland was measured and evaluated, and the possibility of various soil factors as causal agents of this concentration was assessed.
10
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Release of trace metals to the soil solution from a phosphate rock containing soil at different acid loads

63%
Csillag J., Lukacs A., Osztoics E., Csatho P., Baczo G.
Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura
|
2004
|
tom 59
|
nr 4
11

The solubility of iron in forest soils

63%
Gruba P.
Electronic Journal of Polish Agricultural Universities. Series: Forestry
|
2010
|
tom 13
|
nr 4
12
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The influence of soil reaction on solubility of heavy metals in soil and their availability to plants

63%
Gambus F.
Zeszyty Problemowe Postępów Nauk Rolniczych
|
1998
|
tom 456
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Zadrzewienia środpolne jako sposób ograniczenia migracji azotu w glebach i wodach obszarów wiejskich

63%
Baran S., Oleszczuk P.
Acta Agrophysica
|
2001
|
tom 56
14

Sampling soil solution for nitrate and pesticides in a sandy soil under moldboard and no-tillage systems

63%
Hartwig R. C., Lowery B.
Bibliotheca Fragmenta Agronomica
|
1997
|
tom 2A
15

Nutrients and cations content in soil solutions from the present and abandoned penguin rookeries [Antarctica, King George Island]

63%
Juchnowicz-Bierbasz M., Rakusa-Suszczewski S.
Polish Journal of Ecology
|
2002
|
tom 50
|
nr 1
Penguin rookeries are one of the main sources of nutrients for the poor ecosystems of Antarctica. At the current penguin rookeries, and in their vicinity, nitrogen rich ornithogenic soils are formed. Relict ornithogenic soils created at the abandoned rookeries hundreds or even thousands years ago are rich in phosphates. In the region of maritime Antarctica, water plays an important role in distribution and redistribution of nutrients (surface flows and percolation). Soil decomposition processes result in cations and nutrient release. In nutrients originating from relict ornithogenic soils of the Antarctic tundra, phosphates are the dominating elements; while in nutrients originating from contemporary ornithogenic soils nitrogen (mainly ammonia) is the main ingredient. Mineral soils free of penguin influence contain minute amounts of nutrients. Low pH of soil solutions (<4) causes increase of dissolving of phosphate complexes. Near penguin rookery, pH was lowest (2.73-3.33) and intermediate (2.92-3.77) in relict soils. The values of pH were the highest in soil solutions from mineral soil (5.43-7.33). High concentration of cations (mainly K) in soil solutions from the ornithogenic soils and relict ornithogenic soils, suggest their organic (animal) origin.
16
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Soil profile as a natural membrane for heavy metals from wastewater

51%
Wlodarczyk T., Witkowska-Walczak B., Majewska U.
International Agrophysics
|
2012
|
tom 26
|
nr 1
The effect of intensive irrigation with wastewater on the zinc (Zn) and cadmium (Cd) concentration in soil solution was investigated. The experiment was parallel conducted on two soil profiles. The soil microcosms were watered with purified wastewater and purified wastewater with an the addition of zinc and cadmium. The results indicate clearly that neither intensive overhead irrigation of the soil nor its flooding with these wastewater and exceeded sorptive capacity. The application of treated wastewater and wastewater with heavy metals addition did not appear to pose a threat to the natural environment. In all the cases under analysis, zinc and cadmium concentrations in the soil solution were several-fold lower than the permissible levels.
17

Ionic deposition and chemistry of soil solutions in a forested study area in the Chojnow Forest District in the years 2004–2007

51%
Kowalska A., Janek M.
Journal of Water and Land Development
|
2009
|
nr 13a
18
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Przemiany azotanow w glebie [Eutric Histosol] nawadnianej sciekami miejskimi po II stopniu oczyszczania

51%
Stepniewska Z., Pasztelan M., Kotowska U.
Acta Agrophysica
|
1999
|
tom 22
211-217
Badanie nad wykorzystaniem filtru glebowego do oczyszczania wód powiekowych zostały przeprowadzone na poletkach doświadczalnych z udziałem roślin w pobliżu oczyszczalni ścieków Hajdów koło Lublina. Pomiary rozkładu stężeń form azotu takich jak: NH4+, N03", N02‘ na wejściu ścieków oraz na różnych głębokościach filtru glebowego zostały przeprowadzone w czasie, po zastosowaniu nawodnień. Równolegle prowadzono pomiary stanu oksydoredukcyjnego gleby (Eh), na stałe zamontowanymi elektrodami. Praca zawiera wyniki zmian form azotu w roztworze glebowym w czasie nawodnień w funkcji Eh gleby, wykazując dodatnią korelację z azotanami (V) i ujemną z azotanami (III)
19

State of soil sorption complex in substitute stands under decreased air-pollution load in submontane conditions of the Podkrkonosi Region

51%
Vranova V., Samec P.
Electronic Journal of Polish Agricultural Universities. Series: Forestry
|
2005
|
tom 08
|
nr 1
20
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Kwasowość gleby i jej wpływ na rośliny. Monografia.

51%
Jozefaciuk G., Szatanik-Kloc A.
Acta Agrophysica
|
2002
|
tom 59
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.