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Influence of polyacrylamide flocculants on physical properties of two pseudopodzolic soils

100%

Hajnos M., Sokolowska Z.

Zeszyty Problemowe Postępów Nauk Rolniczych

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1996

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tom 436

Two nonionic flocculants, Magnafloc 351 and Rokrysol WF-1, have been applied in different doses to two pseudopodzolic soils: sandy and loessial. The filtration rate, evaporation and aggregate stability have been measured. The amount of the leached flocculants has been used as an estimation of their bonding force to the soil phase. The investigated soil properties have been improved under the influence of both flocculants, in different degree depending on the kind of soil. Physical properties of PAM-modified soils are quite similar.

2

Soil cover as a factor influencing the status of the environment

100%

Kolli R., Ellermae O., Soosaar K.

Polish Journal of Soil Science

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2004

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tom 37

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nr 1

The environmental status of any area is determined by the environment protection value (EPV) of its soils - their properties and functioning. In this work the biological, physical, pedo-climatic and subsoil aspects of the EPV of Estonian post-lithogenic or normally developed mineral soils (72% from total area) have been analysed. The analysis embraces 25 soil groups, the properties of which are presented according to land use (forest, arable and grassland soils) and by different soil layers (humus cover, soil cover and the metric soil layer) on soil matrix tables. On the basis of the results, which were received in the course of the assessment of separate EPV aspects, the EPV class, as an integrated index for soil type, was determined. The soils studied were divided into five classes, according to (I) good, (II) relatively good, (III) satisfactory, (IV) relatively poor and (V) poor EPV.

3

Influence of soil properties on iron and manganese contents in wheat grain

88%

Lipinski W., Franczak S., Watros A.

Journal of Elementology

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2005

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tom 10

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nr 4 Suppl.1

57

4

Chemical composition of Trifolium repens L. from permanent grasslands in relation to some chemical soil properties

88%

Alberski J., Olszewska M.

Acta Agrophysica

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2015

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tom 22

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nr 4

The objective of this study was to determine the relationship between selected soil properties and the chemical composition of Trifolium repens in swards of permanent grasslands in the Olsztyn Lakeland. The study was carried out in 2005-2008 on permanent grasslands with a high share of legumes in the sward. A total of 26 meadow and pasture sites were investigated where the share of Trifolium repens in the sward ranged from 5% to 25% (2 points on the Braun-Blanquet cover scale). Phytosociological releves were done by the Braun-Blanquet method in selected grasslands in the most representative phytocenoses covering an estimated area of 25 m2. Soil samples were collected at a depth of 5-15 cm for analyses of the physical and chemical properties of soil. Samples of plant material of Trifolium repens were also collected from each treatment for chemical analyses. Analyses of soil composition and nutrient content in plant material were carried out with the standard methods. Bulk density, actual moisture content and water-holding capacity were determined by the oven-drying and gravimetric method, acidity was measured in KCl solution with the concentration of 1 mol dm–3, phosphorus and potassium content were determined by the Egner-Riehm method, magnesium content – by the Schachtschabel method, calcium and sodium content – by the universal method proposed by Nowosielski, and copper, zinc, manganese and iron content – by atomic absorption spectrometry (AAS). Plant material was analysed to determine the content of total nitrogen – by the Kjeldahl method, crude fibre – by the Henneberg- Stohman method, phosphorus – by the vanadium-molybdenum method, potassium, calcium and sodium – by flame photometry, magnesium and micronutrients by AAS. The highest number of communities with Trifolium repens were noted on light and medium textured soils with high and very high content of Mg, moderate abundance of Ca and micronutrients, moderate and low levels of P, low content of K and slightly acidic pH. Dry matter of Trifolium repens was characterised by high total protein content and optimal crude fibre content. A mineral composition analysis revealed optimal levels of phosphorus, magnesium and sodium, excessive content of potassium, calcium and manganese, and deficiency of copper, zinc and iron. A significant relationship between the chemical properties of soil and the content of total protein, crude fibre and mineral components in white clover dry matter was confirmed.

5

Evaluation of soil reaction and content of assimilable nutrients in soils of South-Eastern Poland

88%

Tkaczyk P., Bednarek W., Dresler S., Krzyszczak J.

Acta Agrophysica

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2016

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tom 23

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nr 2

An environmental study was performed in the years 2008-2012 to evaluate actual soil reaction (pHKCl) and content of nutrients in soils of south-eastern Poland and also to determine the relationship of those nutrients to soil properties. To carry out those studies, 15493 soil samples were chemically analysed in certified laboratory of Regional Agrochemical Station in Lublin. In all soil samples particle size distribution was determined using the Laser Diffraction Method, soil reaction – in 1 mol KCl·dmˉ³, phosphorus and potassium using Egner-Riehm method, and magnesium was assayed using Atomic Absorption Spectrometry method. The reaction of non-calcareous soils of south-eastern Poland was acidic (very light soils) or slightly acidic (light, medium and heavy soils), and for calcareous soils the it was alkaline. The chemical analysis revealed that supply of phosphorus was moderate (light and medium non-calcareous and very light calcareous soils), high (very light and heavy non-calcareous soils) and very high (light, medium and heavy calcareous soils), and it depended significantly on the soil reaction. The supply of potassium in non-calcareous soils was moderate and depended significantly on agronomic category and soil reaction. As for magnesium, the supply of this nutrient in calcareous and non-calcareous soils depended on agronomic category and soil reaction.

6

The use of dilatometer test for the determination of undrained shear strength in organic soils

88%

Rabarijoely S.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2008

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tom 40

7

Soil colour and spectral analysis employing linear regression models. I. Effect of organic matter

88%

Barouchas P. E., Moustakas N. K.

International Agrophysics

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2004

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tom 18

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nr 1

8

Agro-ecological problems of soil flooding and underflooding in Ukraine

88%

Medvedev V. V., Truskavetsky R. S., Altman K. P.

Acta Agrophysica

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2000

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tom 35

Problems related to soil flooding in Ukraine are discussed. Directions of soil processes and changes in the soil properties under the influence of flooding are reviewed on the basic of an example of a chernozem-meadow soil located close to the Kremenchung water reservoir.

9

Preliminary investigation for forecasting the content of polycyclic aromatic hydrocarbons after soil fertilization with sewage sludge

88%

Oleszczuk P., Baran S.

Polish Journal of Environmental Studies

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2004

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tom 13

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nr 3

In addition to the positive effects on the physical, chemical and biological soil properties of the application of sewage sludge into the soil, there is often an increase of both organic and inorganic pollutants in the soil. One of the most popular organic xenobiotics frequently present in sewage sludge are polycyclic aromatic hydrocarbons. The aim of this study is to determine possibilities for forecasting the content of individual PAHs in the soil on the basis of their content in sewage sludge. Two types of sewage sludge with different PAH contents, both in terms of quantity and quality, were examined. The different types of sludge were introduced into the soil in the following doses: 30, 75, 150, 300 and 600 t/ha. The results obtained showed a clear differentiation in the behaviour of individual PAHs in relation to the dose applied and the type of sewage sludge.

10

Correlation between the number of cultivatable microorganisms and soil contamination with diesel oil

88%

Wyszkowska J., Kucharski J.

Polish Journal of Environmental Studies

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2005

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tom 14

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nr 3

The effect of diesel oil contamination on the number of soil microrflora in light clay sand and light clay was determined in a pot experiment. The experimental soil was contaminated with the following doses of diesel oil (ON) calculated as maximum water capacity (MWC): 0; 0.5; 1; 1.5; 2; 2.5 and 3%. The lowest dose of diesel oil (0.5% MWC) for the lighter soil was 1.67 g · kg⁻¹ d.m. and for heavier soil it was 1.71 g · kg⁻¹ d.m. Varied urea fertilization also was applied: 0 and 250 mg N g · kg⁻¹ d.m. of soil. For the initial 18 days, the pots were maintained unsown. On day 18, the Juno variety of yellow lupine was planted (7 plants per pot). The yellow lupine plants were harvested at the blooming phase. Soil samples were taken on day 18 and immediately after yellow lupine harvest. Based on the results, soil contamination with 0.5% to 3.0% MWC of diesel oil was found to disturb the soil microbiological balance. This substance stimulated the development of oligotrophic, copiotrophic, sporulating copiotrophic and Actinomycetales and inhibited the development of Azotobacter spp. and cellulolytic bacteria. Fertilisation with urea had a positive effect on the multiplication of the above microorganisms. The number of oligotrophic, copiotrophic bacteria and Actinomycetales was higher in the light clay, whereas the number of sporulating oligotrophic, sporulating copiotrophic and cellulolytic bacteria and fungi was greater in light clay sand soil. Yellow lupine cultivation had a positive effect on the multiplication of sporulating oligotrophic, copiotrophic and cellulolytic bacteria and fungi in both analyzed types of soil. Hydrolytic acidity and organic carbon content were positively correlated, whereas pH, total exchangeable cations and alkaline cation soil saturation were negatively correlated with soil contamination with diesel oil.

11

Content of phenolic compounds in humus acids of forest soil

88%

Banach-Szott M.

Polish Journal of Soil Science

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2007

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tom 40

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nr 1

Theaimof the present paper was to define the qualitative and quantitative composition of phenolic compounds in the extracts of fulvic acids and hydrolyzates of humic acids isolated from forest soil. Forest soil was sampled from the organic horizon (5-3.5 cm – sub-horizon Ol and 3.5-0 cm– sub-horizon Ofh) and mineral horizon every 10 cm (0-50 cm). Phenoliccompounds in fulvic acids (FAs) extracts and humic acids (HAs) hydrolyzates were identified by high performance liquid chromatography (HPLC). The recorded chromatograms showed differences in the composition of phenolic compounds between humic and fulvic acids fractions. The content of those compounds both in extracts of fulvic acids and hydrolyzates of humic acids and V+S+C parameter values decreased together with the sampling depth. The highest values of V+S+C parameter were calculated for extracts of fulvic acids and humic acids hydrolyzates isolated from the organic horizon of forest soil. The share of the vanillyl type in the extracts of humus acids (HAs+FAs) of the subhorizon Ol was close to that of the sum share of the syringyl and cinnamyl type. The greater the depth, the greater the share of vanillyl compounds in the pool of the share of syringyl, cinnamyl and vanillyl compounds.

12

Some soil properties affecting orchards of the Cracow Province

88%

Jasiewicz C., Zemanek M.

Acta Agrophysica

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2001

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tom 52

Soil samples for analyses were collected in the whole area of the Cracow province. Basic soil properties and content of heavy metals were determined in the soil samples. It was found out that 47% of the examined soils of the Cracow province should be classified as the soils with elevated cadmium levels, 10% are soils with elevated lead levels and 27% are the soils with elevated zinc levels. The remaining soils should be classified as the soils with a natural content of these elements. Nickel and copper concentrations in all the examined soils are in the range of the natural content. The calculated correlation coefficients show that the content of cadmium was determined by the soil pH and content of copper by the content of C-org.

13

Effects of application of compost produced from organic wastes on some soil properties and chemical composition of leachates

75%

Klasa A., Nogalska A.

Electronic Journal of Polish Agricultural Universities. Series Environmental Development

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2013

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tom 16

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nr 2

14

The influence of multi-year organic and mineral fertilisation on the physicochemical properties of lessive soil

75%

Mazur Z., Sienkiewicz S., Mazur T.

Polish Journal of Soil Science

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2015

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tom 48

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nr 1

In a multi-year field fertilisation experiment the effects of organic and mineral fertilisers on the physicochemical properties of lessive soil were compared. Manure, two doses of slurry and mineral fertilisers were applied to soil farmed in an eight-field crop rotation. Dose 1 of slurry, manure and mineral fertiliser were applied in doses balanced with nitrogen. Dose II of slurry was determined so that the amount of organic carbon introduced along with it was the same as in the dose of manure. To the experimental facilities with manure and slurry, additional fertilisation with phosphorus and potassium was applied. Following 36 years of annual fertilisation, samples of soil were taken from the 0-25 cm layer, determining the amount of organic carbon and the sorption properties of the soil. It was determined that as a result of applying organic fertilisers, the amount of organic carbon, sorption complex capacity and basic cation content increased whereas hydrolytic acidity decreased. Manure was found to have the most beneficial effect, which was matched by neither dose I nor II of slurry. Additional phosphorus-potassium fertilisation of soil with manure and slurry positively influenced the sum of bases and the total sorption capacity of the soil. Mineral NPK fertilisation led to the decrease in the saturation of bases of the sorption complex and the increase in hydrolytic acidity.

15

Content of selenium in arable soils near Wroclaw

75%

Patorczyk-Pytlik B., Kulczycki G.

Journal of Elementology

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2009

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tom 14

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nr 4

The material for this study consisted of 60 soil samples collected from the arable layer of cultivated fields located in the vicinity of Wrocław. The samples varied in their properties and reflected a whole range of soil types to be found in the region of Lower Silesia. The examinations proved that selenium content in arable soils near Wroclaw ranged from 81 to 449 μg⋅kg-1 and the average value of Se content in these soils was 202 μg⋅kg-1. The lowest Se content appeared in sandy soils (174 μg⋅kg-1), while the highest value was found in loamy soils. The mean value of Se content calculated for this group of soils was 228 μg⋅kg-1. Selenium content in soils varied to a high degree (V=42%). The value lower than 100 μg⋅kg-1, assumed as a critical one for the quality of plant yield, was recorded for 4 samples, while in 33 soil samples the Se content fell in the range of 101- -200 μg⋅kg-1 and in 14 samples it ranged from 201 to 300 μg⋅kg-1. Only 9 soils out of these subjected to investigation characterized selenium value higher than 300 μg⋅kg-1, i.e. the value regarded as medium soil fertility. Se content in soils was highly correlated with their content of silt and clay, as well as colloidal parts and also with the amount of C and total content of such chemical elements as P, S, Fe, Cu, Zn and Ni.

16

The effect of increased doses of compost on leaching of mineral nitrogen from arable land

75%

Elbl J., Plosek L., Kintl A., Prichystalova J., Zahora J., Friedel J. K.

Polish Journal of Environmental Studies

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2014

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tom 23

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nr 3

This work presents the analysis of the effect of compost addition on leaching of mineral nitrogen from arable land, plant biomass production and soil properties. Compost used for experiment consists of the basic raw materials for the production of reclamation substrates in company CKB. These substrates are often used for restoring the damaged agricultural lands. Therefore, this compost was applied in increased doses (300% of recommended dose) to determine the potential impact on the parameters above. To demonstrate this effect, five variants with same doses of compost and different doses of mineral and organic fertilizers, were prepared. The highest decrease of mineral nitrogen leaching was observed by the simultaneous applications of soluble humic substances and compost to soil samples, about 400% in comparison with the control variant.

17

Mapping of soil conditions in precision agriculture

75%

Lukas V., Neudert L., Kren J.

Acta Agrophysica

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2009

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tom 13

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nr 2[167]

18

Characterising root density of peach trees in a semi-arid Chernozem to increase plant density

75%

Paltineanu C., Septar L., Gavat C., Chitu E., Oprita A., Moale C., Calciu I., Vizitiu O., Lamureanu G.

International Agrophysics

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2016

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tom 30

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nr 1

19

Advances in ecological modelling of soil properties by self-organizing feature maps of natural environment of Lower Silesia [Poland]

75%

Stankiewicz A., Kosiba P.

Acta Societatis Botanicorum Poloniae

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2009

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tom 78

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nr 2

167-174

The paper provides the use of self-organizing feature maps for determination of soil properties in its initial stage of development formed of massive rocks and how SOFM can be used for the study of environmental objects. The study area was Lower Silesia (Poland) overgrown with common, unique and protected vegetation of lichens, bryophytes and vascular plants. The parent rock of the studied soils consists of Miocene volcanites from the middle part of the Sudety Margin Fault. Soil samples were collected from 20 sites. The soil reaction (pH) and concentrations of Cd, Co, Cu, Fe, Mn, Mo, Ni, Pb, S, Ti, Zn in surface soils were analyzed. Statistical analysis was carried out by one-way ANOVA. The SOFM was used to demonstrate the non-linear ordination and visualization of soil properties. The SOFM showed the influence of parent rock on soil chemical properties generated by it. SOFM appeared to be effective and proper/fit for phenomena and processes taking place in natural environment and is useful in ecology and ought to be taken into account as a possible tool of estimation of various plants and their biotopes. The model can be useful as alternative techniques in modelling the ecological complex data, and provide a novel framework for the discovery and forecasting of ecosystem structure and behaviours in response to environmental changes.

20

Soil considerations in cultivation of plants

75%

Bulinski J., Sergiel L.

Annals of Warsaw University of Life Sciences - SGGW. Agriculture

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2013

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nr 61 Agric.Forest Eng.

Soil considerations in cultivation of plants. There are analyzed the results of investigations on the effect of tractor outfit traffic over the field on the plant growth conditions. Changes in soil compaction, density and porosity influenced by compacting by wheels are presented in relations to optimal values. The effect of excessive soil compaction on development of root system and absorption of nutrients are presented.

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