Search results for "631 - Agricultura. Agronomía. Maquinaria agrícola. Suelos. Edafología agrícola"

showing 3 items of 3 documents

Extent and persistence of soil water repellency induced by pines in different geographic regions

2018

The extent (determined by the repellency indices RI and RIc) and persistence (determined by the water drop penetration time, WDPT) of soil water repellency (SWR) induced by pines were assessed in vastly different geographic regions. The actual SWR characteristics were estimated in situ in clay loam soil at Ciavolo, Italy (CiF), sandy soil at Culbin, United Kingdom (CuF), silty clay soil at Javea, Spain (JaF), and sandy soil at Sekule, Slovakia (SeF). For Culbin soil, the potential SWR characteristics were also determined after oven-drying at 60°C (CuD). For two of the three pine species considered, strong (Pinus pinaster at CiF) and severe (Pinus sylvestris at CuD and SeF) SWR conditions we…

631 - Agricultura. Agronomía. Maquinaria agrícola. Suelos. Edafología agrícola0208 environmental biotechnologyRepellency indexSoil science02 engineering and technologySoilSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliClay soilWater Science and TechnologyFluid Flow and Transfer Processesrepellency indexbiologyMechanical EngineeringHydraulic engineering04 agricultural and veterinary sciencesbiology.organism_classificationPine020801 environmental engineeringRepellency index.Water repellencyLoamSoil water040103 agronomy & agricultureGeographic regions0401 agriculture forestry and fisheriesEnvironmental sciencePinus pinasterTC1-978Water drop penetration time
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Application of minidisk infiltrometer to estimate water repellency in Mediterranean pine forest soils

2017

Assessment of soil water repellency (SWR) was conducted in the decomposed organic floor layer (duff) and in the mineral soil layer of two Mediterranean pine forests, one in Italy and the other in Spain, by the widely-used water drop penetration time (WDPT) test and alternative indices derived from infiltration experiments carried out by the minidisk infiltrometer (MDI). In particular, the repellency index (RI) was calculated as the adjusted ratio between ethanol and water soil sorptivities whereas the water repellency cessation time (WRCT) and the specifically proposed modified repellency index (RIm) were derived from the hydrophobic and wettable stages of a single water infiltration experi…

Mediterranean climatemodified repellency index631 - Agricultura. Agronomía. Maquinaria agrícola. Suelos. Edafología agrícola0208 environmental biotechnologySoil water repellency02 engineering and technologyMinidisk infiltrometerSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliInfiltrometerModified repellency indexWater Science and TechnologyFluid Flow and Transfer ProcessesAgroforestryMechanical EngineeringPine forestForestry04 agricultural and veterinary sciencesHydraulic engineeringMinidisk infiltrometer; Modified repellency index; Pine forest; Soil water repellency; Water Science and Technology; Mechanical Engineering; Fluid Flow and Transfer Processespine forest020801 environmental engineeringSoil water040103 agronomy & agriculturePine forestsoil water repellency0401 agriculture forestry and fisheriesEnvironmental scienceminidisk infiltrometerTC1-978
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Alternative analysis of transient infiltration experiment to estimate soil water repellency

2019

The repellency index (RI) defined as the adjusted ratio between soil‐ethanol, Se, and soil‐water, Sw, sorptivities estimated from minidisk infiltrometer experiments has been used instead of the widely used water drop penetration time and molarity of ethanol drop tests to assess soil water repellency. However, sorptivity calculated by the usual early‐time infiltration equation may be overestimated as the effects of gravity and lateral capillary are neglected. With the aim to establish the best applicative procedure to assess RI, different approaches to estimate Se and Sw were compared that make use of both the early‐time infiltration equation (namely, the 1 min, S1, and the short‐time linear…

water drop penetration timerepellency index631 - Agricultura. Agronomía. Maquinaria agrícola. Suelos. Edafología agrícolatwo-term infiltration model0208 environmental biotechnologySoil science04 agricultural and veterinary sciences02 engineering and technologysoil hydraulic conductivityinfiltration020801 environmental engineeringInfiltration (hydrology)two‐term infiltration modelsoil sorptivitySoil water040103 agronomy & agriculturesoil water repellencySettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali0401 agriculture forestry and fisheriesEnvironmental scienceminidisk infiltrometerWater Science and Technology
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