How plastic mulches affect the thermal and radiative microclimate in an unheated low-cost greenhouse
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URI: http://hdl.handle.net/10835/16269
ISSN: 0168-1923
DOI: https://doi.org/10.1016/j.agrformet.2011.09.006
ISSN: 0168-1923
DOI: https://doi.org/10.1016/j.agrformet.2011.09.006
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Bonachela Castaño, Santiago; Granados García, María Rosa; López Hernández, Juan Carlos; Hernández Rodríguez, Joaquín; Magán Cañadas, Juan José; [et al.]Date
2011-09-09Abstract
Suboptimal regimes of air and soil temperature usually occur under unheated greenhouses during winter crop cycles. This work analyses the effects of three soil surface treatments (no plastic mulch, NM; transparent mulch, TM, and black mulch, BM) on the air-soil heat exchanges and the resulting soil and aerial microclimate. Experiments were conducted in unheated greenhouse compartments located in an area of mild winter climate (South-East Spain) during autumn and winter periods. In all treatments, the soil consisted of an artificial layer of 0.10 m gravel-sand material placed above a 0.3 m layer of imported loamy soil. When vents were closed, soil heat flux, ground net radiation and both air and root-zone temperature were higher in BM than in TM, while NM presented intermediate performances between BM and TM. When vents were open, heat storage and soil warming were substantially reduced with respect to unventilated conditions. This reduction was greater in BM, and so the advantages of B...
Palabra/s clave
Greenhouse microclimate
Air temperature
Black mulch
Gravel-sand layer
Net radiation
Soil heat flux
Soil temperature
Transparent mulch