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Modified method of aerodynamic resistance calculation and its application to potential evapotranspiration estimation

100%

Rodny M., Nolz R., Novak V., Hlavacikova H., Loiskandl W., Himmelbauer M.

International Agrophysics

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2016

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tom 30

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nr 2

2

Comparison of deep seepage estimations of a virtual with a real lysimeter by means of TDR-measurements

86%

Schindler U., Mueller L.

International Agrophysics

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2005

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tom 19

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nr 1

3

The effect of progressive acidification of lessive soil on zinc content and its translocation in soil profile

72%

Kiepul J., Gediga K.

Journal of Elementology

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2009

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tom 14

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nr 2

265-270

In Poland 11% of soils feature elevated zinc content or slight zinc contamination. This investigation aimed at estimation of the effect of progressive acidification of slightly zinccontaminated soils on zinc content in plants and translocation of this metal downwards the soil profile. The study involved a two-year lysimetric experiment on lessive soil. The amount of zinc indicating slight soil contamination was introduced into 0.2 m of topsoil, which was subjected to progressive acidification with sulfuric acid solution in the course of the experiment. Zinc content proved to considerably increase in plants (barley straw and maize) only under strong acidification. Soil reaction did not significantly influence the zinc content in soil, both total and assayed in HCl zinc forms, while a considerable increase in easily soluble zinc forms (in CaCl2 solution) occurred on strongly acidified soils. Considering the whole research period, increasing soil acidification did not result in any alterations involving zinc content in Bbr and C horizons of soil profiles (below 30 cm).

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Effect of grass species and harvesting frequency on the content of macroelements in waters in a lysimeter experiment

72%

Lipinska H., Jackowska I., Lipinski W., Kornas R., Stamirowska-Krzaczek E., Krzaczek P.

Journal of Elementology

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2016

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tom 21

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nr 2

The objective of the study was to elucidate correlations between meadow plant species, the content of some biogenic elements in groundwater, sward harvesting frequency and the level of the groundwater table at the beginning and at the end of a growing season. An adequate choice of species grown in organic soil may be of particular significance for nutrient management and prevention of water eutrophication due to biogenic elements. A lysimeter experiment was conducted on peat-muck soil. The chemical composition of groundwater sampled underneath the rhizosphere of P. pratensis, Ph. pratense and L. perenne was assessed in several years. Two fixed levels of the groundwater table were maintained in the lysimeters: 50 and 90 cm below the ground surface. Grass was harvested three or five times during a growing season. The content of nitrate-nitrogen and ammonium-nitrogen, phosphorus, potassium, calcium, sodium and magnesium was determined in the analysed groundwater. The results showed significant variation in the mean (over the research period) content of selected mineral components (except for phosphate ions) in the piezometer water collected under the rhizosphere of specific grass species. The species L. perenne absorbed mineral components most effectively. The highest concentration of the majority of the components studied was found in water beneath the rhizosphere of P. pratensis. Significantly higher concentrations of calcium, magnesium, sodium, phosphorus, nitrate-nitrogen (but not ammonium-nitrogen) and potassium were found in water in the springtime. The biogenic element content found in objects with a three-cut harvesting regime was lower than in waters underneath grasses harvested five times. Regardless of the species and harvesting frequency, a significantly higher content of specific cations and anions in piezometer water was found in objects with a lower level of the groundwater table.

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Untersuchungen zur Evapotranspiration beregneter Feldfruchte, gemessen in grossen, wagbaren Lysimetern, im Vergleich mit ergebnissen Ausgewahlter Schatzmethoden der potentiellen Verdunstung sowie Analyse wichtiger Einflussgrossen

72%

Roth D., Gunther R.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Melioracja

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1990

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nr 35

6

Transformations and mobility of 14C-carbofuran in the soil

72%

Lewandowska A.

Journal of Plant Protection Research

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1999

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tom 39

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nr 2

The transformations of ¹⁴C-ring-labeled carbofuran and leaching with water in the humus soil were investigated. The experiments were carried out under laboratory conditions using natural profile of arable layer (mini-lysimeters) and in field lysimeter. The tested compound applied on the soil surface was eluted with water in laboratory and sprinkled four-times every 2 weeks in field trial. Carbofuran was mobile in the soil with permeable water. lts residues could reach the ground water as a result of leaching with heavy rains. The both processes, disappearance of extractable residues and formation of bound ones were most intensive in the upper layers of the soil. The using of natural soil profiles (mini-lysimeters) offer an excellent experimental set up for study of crop protection chemicals behaviour in the soil.

7

Forestry and water budget of the lowlands in northeast Germany – consequences for the choice of tree species and for forest management

58%

Muller J.

Journal of Water and Land Development

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2009

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nr 13a

8

Wplyw wermikompostow i uziarnienia gleby na zawartosc mineralnych form azotu w odciekach z lizymetrow

58%

Kalembasa D.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2006

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tom 513

173-179

W doświadczeniu lizymetrycznym (lizymetr 100 cm wysokości i średnicy 20 cm) badano wymywanie mineralnych form azotu z piasku słabo gliniastego i gliniastego mocnego nawożonych obornikiem oraz wermikompostami wyprodukowanymi na bazie osadu ściekowego i obornika, w czasie procesu ich mineralizacji. W 7, 15, 45, 75, 105 i 135 dniu eksperymentu na powierzchnię lizymetru zastosowano 1,5 dm³ wody dejonizowanej, co odpowiadało 47 mm opadu, a w uzyskanym przesączu oznaczono zawartość NO³⁻ i NH₄⁺. Sumarycznie w przesączach stwierdzono 0,35% (z piasku słabo gliniastego) i 0,33% (z piasku gliniastego mocnego) mineralnych form azotu z ilości azotu całkowitego wprowadzonego na lizymetr. Z piasku słabo gliniastego wymyto więcej mineralnych form azotu, niż z piasku gliniastego mocnego. Udział azotu azotanowego(V) był większy w przesączu z piasku gliniastego mocnego, niż piasku słabo gliniastego. Ilość azotu w formach mineralnych wymytą z piaszczystych utworów glebowych nawożonych obornikiem świeżym oraz wermikompostem z obornika była większa niż nawożonych wermikompostami uzyskanymi na bazie osadu ściekowego.

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Simulation of aerobic stabilisation of municipal landfills in lysimeters

58%

Krzystek L., Zieleniewska A., Ledakowicz S., Kahle H.-J.

Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

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2003

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tom 06

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nr 2

10

Quantity of elements leached from the mountain meadow soil in the long-term static fertilisation experiment [Czarny Potok]

58%

Kopec M., Noworolnik A., Babula J.

Acta Agrophysica

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2001

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tom 52

The present experiment studied effects of systematic, differentiated mineral fertilisation and liming on the amount of N-NO3-, K, Mg, Ca, Na ions lost from the 0-40 cm soil layer during meadow sward vegetation period as a result of leaching. The highest amount of filtrate was observed in the control object for both series, i.e. without liming and with liming. During vegetation, the level of filtrate amounted to, respectively, 224 and 213 mm on the average. The lowest pH of the lysimetric water was found in the objects fertilised with double doses of nitrate and urea. Calcium was leached from the soil to the highest degree, i.e. from 38.4 mg/lysimeter in the object unilaterally fertilised with phosphorus (the series with liming) to 231.6 mg/lysimeter on the object fertilised with 180 kg N in the form of ammonium nitrate (the series without liming). Leaching of potassium depended on the applied fertilisation with this element. The lowest loss of magnesium was found in the object unilaterally fertilised with phosphorus; respectively 12.5 mg Mg/lysimeter for the series without liming and 14.1 mg Mg/lysimeter for the series with liming.

11

Dynamics of nitrate leaching from soils in a lysimetric experiment in 1991-1994

58%

Sykut S.

Acta Agrophysica

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2001

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tom 52

The aim of the present research started in 1977 as a lysimetric experiment in the Institute of Soil Science and Plant Cultivation in Puławy, was, among others, determination of the leaching dynamics for plant nutrients as related to type of soil and level of NPK fertilization. To this end, determination of soil water balance, changes in the chemical composition of the lysimetric filtrates and level of ion leaching during consecutive months and years of the the experiment. In the conditions of the present lysimetric experiment, effects of season, type of soil and plants on the amount of filtrates collected was observed. Nitrate concentration in the filtrates was related to the kind of soil, its utilization and fertilization level. Nitrate concentration in the water percolating through the fallow soil, particulary loess and loamy soils, was usually higher than the water from the cultivated soils. There was no effect (similarly to the previous years) of the fertilization level on the nitrate ions losses from the soil. The highest amount of nitrogen was lost from the fallow soil (the mean of 9.3-14.2 g m-2 year-1).

Ograniczanie wyników

Modified method of aerodynamic resistance calculation and its application to potential evapotranspiration estimation

Comparison of deep seepage estimations of a virtual with a real lysimeter by means of TDR-measurements

The effect of progressive acidification of lessive soil on zinc content and its translocation in soil profile

Effect of grass species and harvesting frequency on the content of macroelements in waters in a lysimeter experiment

Untersuchungen zur Evapotranspiration beregneter Feldfruchte, gemessen in grossen, wagbaren Lysimetern, im Vergleich mit ergebnissen Ausgewahlter Schatzmethoden der potentiellen Verdunstung sowie Analyse wichtiger Einflussgrossen

Transformations and mobility of 14C-carbofuran in the soil

Forestry and water budget of the lowlands in northeast Germany – consequences for the choice of tree species and for forest management

Wplyw wermikompostow i uziarnienia gleby na zawartosc mineralnych form azotu w odciekach z lizymetrow

Simulation of aerobic stabilisation of municipal landfills in lysimeters

Quantity of elements leached from the mountain meadow soil in the long-term static fertilisation experiment [Czarny Potok]

Dynamics of nitrate leaching from soils in a lysimetric experiment in 1991-1994