Soil pore geometry changes in surface horizons under different irrigation regimes (Contributo in atti di convegno)

Type
Label
  • Soil pore geometry changes in surface horizons under different irrigation regimes (Contributo in atti di convegno) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Anna TEDESCHI1, Giacomo MELE1, Fabio TERRIBILE2 (2002)
    Soil pore geometry changes in surface horizons under different irrigation regimes
    in 17th WCSS - 17th World Congress of Soil Science - Soil Science: Confronting New Realities in the 21st Century, Bangkok (Thailand), 14-21 August 2002
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Anna TEDESCHI1, Giacomo MELE1, Fabio TERRIBILE2 (literal)
Pagina inizio
  • 264-1 (literal)
Pagina fine
  • 264-12 (literal)
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  • Comunicazione orale in inglese tenuta dal Dott. Giacomo Mele. Volumi abstracts in formato sia cartaceo che elettronico. Vol III, Symposium 35, Soil Micromorphology to quantify Soil Structure Qualities Volume Full papers solo in formato solo elettronico Gli atti di questo convegno non hanno ISBN ma sono reperibili all' URL indicato, quello ufficiale della IUSS (international union of soil science). (literal)
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  • http://www.iuss.org/index.php?option=com_content&view=article&id=10&Itemid=12 (literal)
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  • Transactions of 17th World Congress of Soil Science (literal)
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  • III (literal)
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  • 12 (literal)
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  • 1 Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Problemi Agronomici dell'Irrigazione nel Mezzogiorno (CNR ISPAIM) - Via Patacca, 85 - 80056 Ercolano NA, Italy - a.tedeschi@ ispaim.na.cnr.it, g.mele@ispaim.na.cnr.it 2 Dipartimento di Scienza del Suolo, della Pianta e dell'Ambiente, Università degli Studi di Napoli \"Federico II\" - Via Università, 100 - 80055 Portici NA, Italy - terribil@unina.it (literal)
Titolo
  • Soil pore geometry changes in surface horizons under different irrigation regimes (literal)
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  • AA.VV. (literal)
Abstract
  • The influence of irrigation practices on the surface soil structure is well known by farmers and agricultural scientists. Breakdown of surface aggregates into finer particles and redistribution of these letter within the top few millimetres produce a crust-like surface structure which affects many soil physical properties such as water infiltration, water retention features, mechanical impedance. The aim of this work is to study soil pore geometry changes in surface horizons under furrow and sprinkler irrigation regimes, using a quantitative approach. Undisturbed samples of a bared and cropped clay-loam soil, before and after the irrigation treatments, were collected. Porosity against depth up to 75 mm and pore size distribution of the upper 1 cm thick layer have been measured by means of image analysis techniques on digital images of sections of the specimens at a resolution of 40 ?m. Major impact on the soil structure of the furrow irrigation versus the sprinkler system has resulted both in terms of compactness and thickness of the crusts. Sprinkler system produced reduction in porosity mainly in the largest pore size classes (>800 ?m) while the furrow system upon the whole range of sizes. Crop has showed a mitigating effect on compactness but an increase of the thickness of the compacted soil. The quantitative analysis of the size distribution of the pore system described in this paper has showed to be easily performable even for very thin layers of soil where other measurements (i.e. hydrology) may be difficult to be employed. (literal)
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