Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorAlagna, Vincenzo-
dc.contributor.authorIovino, Massimo-
dc.contributor.authorBagarello, Vincenzo-
dc.contributor.authorMataix Solera, Jorge-
dc.contributor.authorLichner, Ľubomír-
dc.contributor.otherDepartamentos de la UMH::Agroquímica y Medio Ambientees
dc.description.abstractThe 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 linearization approaches), and the two‐term axisymmetric infiltration equation, valid for early to intermediate times (namely, the cumulative linearization and differentiated linearization approaches). The dataset included 85 minidisk infiltrometer tests conducted in three sites in Italy and Spain under different vegetation habitats (forest of Pinus pinaster and Pinus halepensis, burned pine forest, and annual grasses), soil horizons (organic and mineral), postfire treatments, and initial soil water contents. The S1 approach was inapplicable in 42% of experiments as water infiltration did not start in the first minute. The short‐time linearization approach yielded a systematic overestimation of Se and Sw that resulted in an overestimation of RI by a factor of 1.57 and 1.23 as compared with the cumulative linearization and differentiated linearization approaches. A new repellency index, RIs, was proposed as the ratio between the slopes of the linearized data for the wettable and hydrophobic stages obtained by a single water infiltration test. For the experimental conditions considered, RIs was significantly correlated with RI and WDPT. Compared with RI, RIs includes information on both soil sorptivity and hydraulic conductivity and, therefore, it can be considered more physically linked to the hydrological processes affected by soil water repellencyes
dc.description.sponsorshipThis study was supported by grants from the Università degli Studi di Palermo (Dottorato di Ricerca in Scienze Agrarie, Forestali e Ambientali, ciclo XXIX, D50002D13+1012-
dc.description.sponsorshipMinistero dell'Istruzione, dell'Università e della Ricerca (PRIN 2015 project GREEN4WATER B72F16000550005)-
dc.description.sponsorshipthe Slovak Research and Development Agency APVV (project APVV‐15‐0160),-
dc.description.sponsorshipMinisterio de Economía and Competitividad of Spanish Government (project CGL2013‐47862‐ C2‐1‐R),-
dc.description.sponsorshipBotánica Mediterránea S.L., and Montgó Natural Park-
dc.description.sponsorshipField data in Italy and Spain were collected by V. Alagna. All authors analysed the data and contributed to write the manuscript-
dc.subjectminidisk infiltrometeres
dc.subjectrepellency indexes
dc.subjectsoil hydraulic conductivityes
dc.subjectsoil sorptivityes
dc.subjectsoil water repellencyes
dc.subjecttwo‐term infiltration modeles
dc.subjectwater drop penetration timees
dc.subject.other631 - Agricultura. Agronomía. Maquinaria agrícola. Suelos. Edafología agrícolaes
dc.titleAlternative analysis of transient infiltration experiment to estimate soil water repellencyes
dc.relation.publisherversion 10.1002/hyp.13352-
Appears in Collections:


 1-Alagna et_al HP 2019.pdf
642,77 kB
Adobe PDF

Creative Commons ???jsp.display-item.text9???