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The aim of the study has been to define the stocks and the basic properties of soil organic matter in agricultural-used soil sequence located in the former shoreline of disappearing lakes. The study area is located in the catchment of the Sumowskie Lakes, the Brodnica Lake District, North-Eastern Poland. The investigations involved preparation of five soil pits located in the south-western part of...
The impact of introduced (cherry laurel, black pine) and indigenous (oak-hornbeam, spruce, yew) trees on soil organic matter (SOM) characteristics(total, labile and hot water soluble carbon, total nitrogen content -NT, and humus quality)in Arboretum Mlyňany, Slovakia, was studied. Original growth was oak-hornbeam forest the rest of which was chosen as a control. The results showed thatintroduced and...
The paper presents the studies on relations between features of forest floor vegetation and surface soil horizons (organic and humus) properties. The research was taken in 100 pine stands located in southwest Poland. The investigated relations were different when concerning two forest floor layers. The higher values of the analysed herb layer indicators (the herb layer cover and the amount of plant...
The objective of the study was to evaluate differences occurring in the soil environment between agricultural, meadow and forest soil management. Soil samples were collected from spruce and oak monocultures as well as meadow of the Mlynany arboretum (Slovakia) and near arable sites and analyzed for the total organic carbon (TOC), total nitrogen (Nt) and phosphorus (P) content and fractional composition...
Farming systems strongly affect soil humus. In this study some humus characteristics were used to compare the humus quantity and quality under two different farming systems. The field experiment was established in 1990 on an Orthic Luvisols in Slovakia. A higher content of organic carbon (CT) in topsoil (13.1 g‧kg⁻¹) was recorded in soil under ecological farming where only organic manures were applied...
The objective of this investigation was to determine the effects of humic preparations obtained from oxyhumolite on the growth of barley plants. Two preparations: Na,K-humates/fulvates and Ca,Mg-humates/fulvates were tested in the field experiment. Humus preparations were used in the amount of 4g/m 2 . The application of the preparations increased grain and straw yields. Increases in grain...
The aim of this study was to obtain information on molecular parameters of humic acids (HA) extracted from soils under various fertilization treatments. HAs were extracted from a grey-brown podzolic soil and chernozem under two long-term static field experiments. The fertilization variants were control (without fertilization) and manuring. Viscosimetric and gel permeation chromatography determinations...
Do badań wytypowano 10 jezior o zróżnicowanym użytkowaniu zlewni - grunty orne i lasy. Próby z warstwy powierzchniowej i naddennej jezior oraz wód dopływających i odpływających z badanych jezior, pobrano w trzech terminach: podczas cyrkulacji wiosennej i jesiennej oraz podczas stagnacji letniej. W pobranych próbach oznaczono zawartość azotu ogółem, azotanów, jonów amonowych i fosforanów oraz pH. Stwierdzono,...
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