Wyniki wyszukiwania

1

Effect of sampling season and storage period on dehydrogenase and catalase activity of an Orthic Luvisol

100%

Wlodarczyk T.

Polish Journal of Soil Science

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1998

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tom 31

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nr 2

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Some of aspects of dehydrogenase activity in soils

100%

Wlodarczyk T.

International Agrophysics

|

2000

|

tom 14

|

nr 3

3

Influence of cultivation system on porosity of pseudopodzolic soil

86%

Hajnos M., Sokolowska Z., Dabek-Szreniawska M., Kus J.

Polish Journal of Soil Science

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1998

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tom 31

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nr 2

4

Biological and physicochemical changes in Orthic Luvisol in relation to the cultivation system

86%

Dabek-Szreniawska M., Sokolowska Z., Wyczolkowski A. I., Hajnos M., Kus J.

International Agrophysics

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2002

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tom 16

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nr 1

5

Characteristics of humic acids from under crop rotations with differentiated cereal share

86%

Flis-Bujak M., Zukowska G.

Acta Agrophysica

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2001

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tom 52

This paper presents the results of studies carried out to estimate the influence of crop rotation, with diversified cereal shares on the humic acid characteristics. The tested range covered humic acids separated from the following soil types: degraded chernozem developed from loess, Orthic Luvisol developed from boulder clay, Orthic Luvisol developed from loess. Samples"were taken from the soil arable layer being under many-year crop rotation with a differentiated share of cereals (50 and 100%). The results obtained show that soil use affected quality indices of humic acids. In the lessive soils under cereal monocultures, an increase of the atomic H:C ratio was observed in humic acids. This allows for a conclusion that the monoculture system causes an increase in the content of aliphatic structures in humic acid molecules or a decrease in the condensation degree of their nuclei. Moreover, a decrease in the optic density of humin solutions given in A465 values was found in the humic acids under cereal monocultures which proves a marked direction of changes. In the case of humic acids extracted from chernozem, an analysis of elemental composition did not show any clear differentiation in the crop rotation with a 50% cereal share and a monoculture of cereal plants. The analysis of optic properties indicates a growth of the optic density (value of the E4:E6 ratio decreases) in the variant with a cereal plant monoculture which may suggest growth in the humification of individual humic acids.

6

Soil strength, stability and structural state of Orthic Luvisols under different land use

72%

Debicki R., Glinski J., Lipiec J., Pukos A., Turski R.

International Agrophysics

|

1993

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tom 07

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nr 2-3

7

Effect of management practices on soil organic matter, microbial biomass and aggregate stability of Orthic Luvisol

72%

Dabek-Szreniawska M., Kus J., Balashov E.

International Agrophysics

|

2004

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tom 18

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nr 4

8

Dynamics of competitive sorption of heavy metal cations in mineral soils

72%

Gaszczyk R., Muszynski P.

Acta Agrophysica

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2000

|

tom 35

Model research on competitive sorption of heavy metal cations (Cu2+ , Zn2+ , Ni2+ ,Co2+ , Cd2+ and Cr3+ ) with Ph2+cations was carried out in the followingmineral soils: grey-brown podzolic derived from loess (Orthic Luvisols)using a dynamic method.Investigation on the course and the range of the sorption from the two- component solutions allowed to determine mobility of individual heavy metal cations in relation to lead (II) cations.At the same time, it allowed to evaluate their phyto-availability. Elements, which most easily entered sorptive complexes of both of the investigated soils were copper (II) and chrominium (III) cations. The rest of the cations showed different energy levels of entrance with simultaneous sorption with lead (II) cations. During competitive sorption of heavy metal cations, i.e. at saturation the columns with two component solution, the presence of the second, opposite process namely desorption of the following cations from the soil:Co2+ , Zn2+ , Ni2+ , and Cd2+ was observed. Desorption levels were characteristic for particular cations and depended on the type of soil.

Ograniczanie wyników

4 International Agrophysics

2 Acta Agrophysica

2 Polish Journal of Soil Science

3 Dabek-Szreniawska M.

3 Kus J.

2 Hajnos M.

2 Sokolowska Z.

2 Wlodarczyk T.

1 Balashov E.

1 Debicki R.

1 Flis-Bujak M.

1 Gaszczyk R.

1 Glinski J.

1 Lipiec J.

1 Muszynski P.

1 Pukos A.

1 Turski R.

1 Wyczolkowski A. I.

1 Zukowska G.

1 2004

1 2002

1 2001

2 2000

2 1998

1 1993

Effect of sampling season and storage period on dehydrogenase and catalase activity of an Orthic Luvisol

Some of aspects of dehydrogenase activity in soils

Influence of cultivation system on porosity of pseudopodzolic soil

Biological and physicochemical changes in Orthic Luvisol in relation to the cultivation system

Characteristics of humic acids from under crop rotations with differentiated cereal share

Soil strength, stability and structural state of Orthic Luvisols under different land use

Effect of management practices on soil organic matter, microbial biomass and aggregate stability of Orthic Luvisol

Dynamics of competitive sorption of heavy metal cations in mineral soils