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Showing 1 to 20 of 47 for “"lysimeters"”.
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Suction Cup Lysimeter Method for Extracting Pine Bark Substrate Solution
… to determine the effectiveness of suction cup lysimeters (SCL) in extracting substrate solution from pine bark substrates. Lysimeter types tested were 4.8-cm diameter with a ½ or 1-bar air-entry value (AEV) and 2.2-cm diameter also with a ½ or 1-bar AEV. Sufficient volume could be obtained when …
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Microbial and Chemical Affects on Leachate from Calcareous Soils Treated with Wastewater Effluent
… calcareous soils in greenhouse and field lysimeters, and in soil columns. The leachate from one field lysimeter contained increased fecal coliform counts than the effluent. Leachate coliform counts were decreased or not significantly changed in two field lysimeters. Electrical conductivity …
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Facultative Bioreactor Landfill: An Environmental and Geotechnical Study
… In this research, three pilot-plant scale lysimeters are used in a comparative evaluation of the effect of recirculating treated and untreated leachate on waste stabilization rates. The three lysimeters are filled with waste prepared with identical composition. One is being operated as a …
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Availability and distribution of heavy metals from sewage sludge in the plant-soil continuum
An investigation was conducted using in situ lysimeters (1.5 m x 2.3 m) to determine Cd, Cu, Ni, and Zn availabilities for barley (Hordeum vulgare L.) and corn (Zea mays L.) grown on four sludge-amended soils. These lysimeters were constructed in Acredale silt loam (Typic Ochraqualf), Bojac loamy …
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Evaluation of Nutrient and Pathogen Losses From Various Poultry Litter Storage Methods
… a significant drought, Piedmont porous-cup lysimeters yielded samples 63% of the time, compared to 10% for Ridge and Valley lysimeters. Lysimeters located near the edge of the shed were also more likely to yield a sample than those in the center or a background location. Unknown …
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Irrigation scheduling: a soft adaptor to weather uncertainties and irrigation efficiency improvement initiatives
… 2014 to March 2016. A network of 20 non-weighing lysimeters and an Aquaflex installed on LUDF were utilized for the study. Pasture height, precipitation, irrigation application, deep percolation and change in soil moisture in the lysimeters were measured throughout the study period. Time Domain …
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An analysis of solute transport on a harvested hillslope in the southern Appalachian Mountains
… organic carbon (DOC), four transects of lysimeters, approximately 30 m apart, were installed perpendicular to the stream on one hillslope. Porous ceramic cup (2-bar) lysimeters were installed in each transect 1, 4, 10, 16, 30, and 50 m from the stream in the A horizon and B horizon, and …
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Effect of urinary nitrogen, dairy shed effluent and nitrogen fertiliser on nitrate leaching from a pasture soil
… coarse loamy, mixed, mesic) soil lysimeters (500 mm diameter by 700 mm deep) with ryegrass (Lolium perenne L) - white clover (Trifolium repens L) pasture. The effect of the application of cow urine, dairy shed effluent (DSE) and N fertiliser either individually or collectively on …
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L'inerbimento nell'ecosistema vigneto: confronto di metodologie di misura del consumo idrico del prato e risposta allo sfalcio
… used to measure cover crop water use, the mini-lysimeters and a portable open chamber and data from both was compared to reference evapotranspiration (ETo) (FAO guidelines). While the mini-lysimeters seemed to be limited in their ability to accurately represent the water use of the surrounding …
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AMINO ACIDS AS DIAGNOSTICS OF SOIL AND SOIL WATER QUALITY
… from 3 different settings. Firstly, field-sized lysimeters (1 ha) were used to examine dissolved free and combined amino acids in surface runoff and drainage waters from a grassland soil over 3 winter drainage periods. The waters were collected from soils beneath drained and undrained permanent …
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Étude des recouvrements avec effet de barrière capillaire pour minimiser les infiltrations d'eau dans les sites d'enfouissement de matières résiduelles
… the CCBE, infiltration was measured by means of lysimeters. The quantities of water recovered in these lysimeters were frequently obtained. In addition, the temporal evolutions of the matric suction and the volumetric water content of the various layers were monitored using dataloggers. Water …
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INVESTIGATIONS OF PREFERENTIAL AND MATRIX FLOW IN A MOLE DRAINED SOIL BLOCK
… paraffin wax. Eight tensiometers and suction cup lysimeters were installed in each block together with fifteen pairs of time-domain reflectometry wave guides. A regular spacing pattern was employed so that spatial variations could be easily identified. Samples were collected from suction cup …
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Determining Water Requirements in Turfgrass Systems
… controls with known drought tolerance. Lysimeters plots irrigated to replace 40% ETo and containing loamy sand resulted in less green turfgrass coverage than those grown in silt loam. Water use was significantly affected by soil texture only during late summer 2018, with lysimeters …
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Chemistry and Transport of Metals from Entrenched Biosolids at a Reclaimed Mineral Sands Mining Site in Dinwiddie County, Virginia
… by analyzing leachate collected in zero tension lysimeters below the trenches and suction lysimeters adjacent to the trenches. Chloride (Cl-), sulfate (SO42-), nitrate (NO3-), phosphate (PO43-), dissolved organic carbon (DOC), and pH were also determined within the dissolved fractions (< 0.45 …
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Non-invasive monitoring of water and solute fluxes in a cropped soil
… water concentration and moisture content in the lysimeters were monitored non-invasively using 3-D electrical resistivity tomography (ERT). ERT is a valuable technique to monitor processes in the unsaturated zone. It is suitable to quantify solute concentration or soil moisture content at the …
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The Hydrogeologic effects of fly ash utilization in concrete at Coal Creek Station, Underwood, North Dakota
… and quality were monitored using pressure-vacuum lysimeters and monitoring wells. </p><p> Two geologically distinct sites were instrumented, one representing a recharge zone {monitoring nest 2) and the other a zone of little recharge (monitoring nest 1). Each monitoring nest contains J pressure …
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Organic amendment effects on carbon and nitrogen mineralization in an Appalachian minesoil
… and an unamended control) were assigned to lysimeters filled with blasted overburden. All lysimeters were planted with a treecompatible ground cover of grasses and legumes and 10 pitch pine x loblolly pine hybrid seedlings (Pinus rigida L. x P. taeda L.). The control treatment was designed …
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Vegetative Potential to Reduce Total Dissolved Solid Nutrient Ions Generated from Reclaimed Mine Lands in Central Appalachia
… and vegetative productivity. Ion exchange resin lysimeters were used to compare nutrient ion fluxes in soil solution that contribute to TDS between paired plots. Soil and vegetation properties (used as proxies for evapotranspiration and plant uptake) were characterized at each site and correlated …
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Changes in Soil Nitrogen Following Biosolids Application to Loblolly Pine (Pinus Taeda L.) Forest in the Virginia Piedmont
… growing season. Nitrate-N concentrations in lysimeters were below water quality standard limits in all the treatments applied at the rate of 225 kg PAN ha⁻¹. Accumulation of N, C, and Ca in the forest floor was well correlated with the amount of biosolids applied on each treatment. The …
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Sorption and leaching of glyphosate on partly sealed urban areas
… Lysimetern, (3) Säulenversuche mit Material des Lysimeters und Fugenmaterial eines Gehwegs, (4) ökotoxikologische Versuche mit dem Wurm Lumbriculus variegatus. Die Untersuchungen des Fugenmaterials zeigten, dass die obere 0-1 cm Schicht aufgrund von urbaner Deposition (z.B. Feinstäube, Ruß, …
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