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Title: Effects of Irrigation and Tree Spacing on Soil and Air Temperature Profiles of Olive Orchards
Authors: Andrade, José
Santos, Francisco
Correia, Manuela
Paço, Teresa
Editors: Serman, F. Vita
Searles, P.
Torres, M.
Keywords: olive orchard
soil temperature
air temperature
damping depth
Issue Date: 2014
Publisher: International Society for Horticultural Science
Citation: Andrade, J. A. Santos, F.L., Correira, M, Paço, T. A. 2014. Effects of Irrigation and Tree Spacing on Soil and Air Temperature Profiles of Olive Orchards. In F. Vita Serman et al.(Eds) Proc. VIIth International Symposium on Olive Growing, Acta Horticulturae, 1057 : ISSN: 0567-7572
Abstract: Air and soil temperatures have often been used as driving variables in numerous crop growth and development models as well as in those referred to soil like mineralization, evaporation or transpiration. Temperatures (and moisture) profiles above and beneath soil surface change when a vegetation cover above a bare soil is introduced. The aim of this work was to evaluate (a) the soil thermal behavior in two olive orchards (Olea europaea), both grown on soils with little profile development (Regosol and Cambisol) and subject to drip irrigation but with different spacing between trees, and (b) the air thermal profile over olive rows. Experiments were performed from April to June 2012 in Southern Portugal. Soil and air temperatures were measured by thermocouples. The two orchards changed spatial distribution of soil surface temperature, soil temperature profiles and air temperature within the canopy, either on a daily or hourly basis. Olive tree spacing and irrigation affected both the soil thermal behavior and air thermal profiles. Tree spacing affected the horizontal gradients established along the interrows (intensity and rhythm). Irrigation reduced hourly and daily mean soil surface temperatures and daily thermal amplitudes and increased damping depths in both profiles. Along the row, the effect of shading seems to overlap that of irrigation in an hourly basis.
ISBN: 9789462610477
ISSN: 0567-7572
Type: article
Appears in Collections:MED - Artigos em Livros de Actas/Proceedings

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