Wyniki wyszukiwania - AGRO

1

Relict features of mucuous soils in the Kurpie Plain

100%

Lachacz A., Piascik H.

Polish Journal of Soil Science

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2004

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tom 37

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nr 2

The area of Kurpie Plain features mucuous soils (sandy humous soils) containing from 3 to 10% of organic matter in the humus (top) layer. These soils developed from loose sands of fluvio-glacial origin. The morphology of these soils indicates the prior processes of podsolization and gleyization. The profile distribution of those elements soluble in 20% HCl as well as free iron, indicate the podzolization effect.

2

The distribution and survival of eggs of Ascaris suum in six different natural soil profiles

100%

Mizgajska H.

Acta Parasitologica

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1993

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tom 38

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nr 4

In a field experiment conducted near Poznan (Poland) eggs of Ascaris suum were found to have penetrated the soil according to the dispersion of percolating water which depends mainly on the soil structure and texture. Under natural conditions, after 17 months, the eggs were recovered in soil down to a depth of 8-21 cm. Out of the 50,000 Ascaris eggs used for contamination of each soil sample only 0. 1-4.5% survived for 17 months in the larval stage and most of these remained within 1-5 cm of the soil surface. It was observed that some of the eggs may have their development temporarily arrested.

3

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High temporal resolution monitoring in a wet grassland (Oxfordshire, UK) for estimation of evaporative loss

88%

Mould D. J.

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

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2007

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nr 38

127-137

A strong diurnal regime in water levels (maximum range 10 cm) was discovered by pressure transducers programmed to measure water levels at high frequency. The wetland site is a restored wet grassland floodplain in a clay basin. These water table fluctuations are used to estimate evaporative loss from the soil profile assuming constant head recovery, and compared to actual evaporation measurements derived from eddy correlation-energy budget methods. The former performed well on dry days with a strong diurnal regime, and information gained from high temporal resolution monitoring improved hydrological understanding of the wetland considerably.

4

Downward movement of fertilizer nitrogen in Hungarian soils

88%

Fuleky G.

Nawozy i Nawożenie

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2009

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nr 37

5

Assessment of soil erosion in the catchment of two combined closed depressions in the Nałęczów Plateau (Lublin Upland)

88%

Rafalska-Przysucha A., Rejman J.

Acta Agrophysica

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2015

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tom 22

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nr 1

The aim of the study was to evaluate the intensity of soil erosion within the catchment of two closed depressions in the Nałęczów Plateau (Lublin Upland). The amount of erosion was assessed from the depth of accumulated soil material, and the calculated amount was related to the time of agricul-tural land use. The studies were carried out in the catchment of the area of 0.54 ha. Within the catchment, 75 intact soil cores were taken and analysed to determine the depth of soil horizons and accumulated soil material. Depositional soils were represented by 25 soil cores. The average thickness of the accumulated material was 0.75 m with a maximum of 1.78 m. The results showed that the catchment of two combined closed depressions evolved to the form of a small valley (trough) after 185 years of agricultural use. The volume of soil material accumulated in the catchment, calculated from the thickness of the depositional material in soil profiles collected in a regular grid, was 1797.4 m3, and the volume calculated from the profiles located in transects that crossed the catchment axis was higher by 2%. The average rate of erosion in the catchment of the two combined depressions was 24.3 Mg ha-1

6

Fractionation of iron and manganese in the horizons of a nutrient-poor forest soil profile using the sequential extraction method

75%

Walna B., Spychalski W., Ibragimow A.

Polish Journal of Environmental Studies

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2010

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tom 19

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nr 5

Soil iron and manganese fractionation is evaluated in the soil profile sampled from a pine-covered area of Wielkopolski National Park (mid-western Poland), that for years has been exposed to acid rain. The soils studied are sands and loamy sands with a pH of 3.3-4.4. The content of iron and manganese was analyzed by sequential extraction in the following fractions: exchangeable, acid extractable, reducible, oxidizable, and residual. The soil profile displays a lithogenically dichotomous structure that is reflected in the iron and manganese content, especially in the Fe residual fraction and Mn oxidizable fraction. In terms of the lability of manganese, it can be stated that the amount of manganese in reducible fractions (Mnred) is higher than in exchangeable and acid extractable ones (except in the surface layer), while the amounts of manganese in fractions in which it is poorly available (Mnox) and unavailable (Mnres) are lower than that of Mnred. For iron, this sequence looks as follows: Feex

7

Automated soil profile generation system for the dilatometer test [DMT]

75%

Bilski P., Rabarijoely S.

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

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2009

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tom 41

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nr 2

119-130

8

The effect of irrigation interval on temperature distribution in soil profile under solarization applications in greenhouses

75%

Oz H., Coskan A., Atilgan A.

Infrastruktura i Ekologia Terenów Wiejskich

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2013

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nr 1/III

The aim of soil solarization is to control soil borne pathogens and weeds heating with solar energy of soil which is sufficiently wetted. Soil water content is the one of the most important factors affecting soil solarization. Humidity level is important to convey temperature from the upper layers to down layers of soil in solarized soil. For this purpose, the study was conducted in plastic greenhouse in Isparta province. Beginning of the study, all plots were irrigated to reach the field capacity, and then the all plots were irrigated in 5 days irrigation interval during the experiment periods. Temperature distribution was measured in 5, 10, 20 and 30 cm of the soil profile along the experiment periods. As a result of this study, increasing of soil temperature and effectiveness of solarization decreased with together the water content of soil in upper layers. However, the soil temperature increased with irrigation in the down layers.

9

Modelling the water balance and grass production using SWACROP/GRASS and GRAGRO models

75%

Olszta W., Kabat P.

Zeszyty Problemowe Postępów Nauk Rolniczych

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1996

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tom 436

In this paper especially the SWACROP/GRASS-model is described while only for comparing also a general introduction to GRAGRO - model, is given.

10

A scanner-based approach to soil profile-wall mapping of root distribution

75%

Dauer J. M., Withington J. M., Oleksyn J., Chorover J., Chadwick O. A., Reich P. B., Eissenstat D. M.

Dendrobiology

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2009

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tom 62

35-40

Root distribution sampling techniques are often inaccurate, time consuming and costly. We present an inexpensive approach to soil profile-wall mapping using a desktop scanner that allowed us to spend reduced time in the field. The scanner was pressed onto the vertical surface of a 1 x 1 m soil pit and images of the roots were taken in situ. In a common garden planting of eleven, 30-year-old conifer and hardwood tree species in Poland, we compared root counts (number of roots cm–2) obtained by this method with independent measurements of root length density (RLD) obtained from soil cores. We found a positive correlation (Spearman rank correlation r=0.93; P<0.001) suggesting general agreement of the two approaches in ranking among the species. Soil coring as well as grid mapping with plastic overlays took a longer total time for quantifying root distribution than the scanning procedure. The desktop scanner approach we developed is an inexpensive, time efficient and accurate way of quantifying root distribution and abundance that allows a unique coupling of root data to soil properties.

11

Aerobic and anaerobic respiration in profiles of Polesie Lubelskie peatlands

75%

Szafranek-Nakonieczna A., Stepniewska Z.

International Agrophysics

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2014

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tom 28

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nr 2

Soil respiration is a very important factor influencing carbon deposition in peat and reflecting the intensity of soil organic matter decomposition, root respiration, and the ease of transporting gases to the surface. Carbon dioxide release from three different peat soil profiles (0-80 cm) of the Polesie Lubelskie Region (Eastern Poland) was analyzed under laboratory conditions. Peat samples were incubated at 5, 10, and 20°C in aerobic and anaerobic environments, and their CO2-evolution was analyzed up to 14 days. The respiration activity was found to be in the range of 0.013-0.497 g CO2 kg-1 DW d-1. The respiratory quotient was estimated to be in the range of 0.51-1.51, and the difference in respiration rates over 10°C ranged between 4.15 and 8.72 in aerobic and from 1.15 to 6.53 in anaerobic conditions. A strong influence of temperature, depth, the degree of peat decomposition, pH, and nitrate content on respiration activity was found. Lack of oxygen at low temperature caused higher respiration activity than under aerobic conditions. These results should be taken into account when the management of Polish peatlands is considered in the context of climate and carbon storage, and physicochemical properties of soil in relation to soil respiration activity are considered.

12

Determination of the saturated hydraulic conductivity in layered silt loam soil profile

75%

Szejba D., Kladivko E. J., Willoughby G. L.

Annals of Warsaw Agricultural University. Land Reclamation

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2001

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tom 31

3-11

13

Effect of axle loading in agricultural outfits on soil compaction in the arable layer

75%

Bulinski J., Majewski Z.

Annals of Warsaw Agricultural University. Agriculture

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1999

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nr 34 Agric.Eng.

17-22

14

Moisture conditions on a polder without an efficient drainage system. Case study

75%

Zaradny H.

International Agrophysics

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2004

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tom 18

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nr 3

15

Hydraulic conductivity of a layered soil profile measured by ponded infiltration technique

75%

Szejba D., Kladivko E. J., Willoughby G. L.

Przegląd Naukowy Wydziału Melioracji i Inżynierii Środowiska

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1998

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nr 15

16

Fractal scaling of soil particles in agricultural landscapes of Nigerian savannas

75%

Salako F. K.

International Agrophysics

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2006

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tom 20

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nr 4

17

Weathering of heavy minerals in podzol soil profiles on aeolian sands in Central Poland

75%

Manikowska B.

Quaestiones Geographicae. Zeszyt Specjalny

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1995

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tom 04

18

Application of scanning electron microscopy and microanalysis [SEM] in the study of certain processes in Mollic Gleysols

75%

Drozd J., Licznar M., Licznar S.

International Agrophysics

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1994

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tom 08

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nr 1

19

Infiltration into layered soil covered with a depositional seal: a Green-Ampt approach

75%

Pachepsky Y. A., Timlin D.

International Agrophysics

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1996

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tom 10

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nr 1

20

Simulation of an irrigation system for peat soils

75%

Kowalski D., Olszta W., Zaradny H.

Acta Agrophysica

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2002

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tom 68

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