How mulching and canopy architecture interact in trapping solar radiation inside a Mediterranean greenhouse
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URI: http://hdl.handle.net/10835/16267
ISSN: 0168-1923
DOI: https://doi.org/10.1016/j.agrformet.2020.108132
ISSN: 0168-1923
DOI: https://doi.org/10.1016/j.agrformet.2020.108132
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Bonachela Castaño, Santiago; López Hernández, Juan Carlos; Hernández Rodríguez, Joaquín; Granados García, María Rosa; Magán Cañadas, Juan José; [et al.]Fecha
2020-07-27Resumen
This work evaluates roles and interactions of ground albedo (ag) and canopy architecture in capturing solar radiation inside Mediterranean greenhouses. Both incident and reflected solar radiation were measured over the ground surface and the greenhouse roof cover during a series of greenhouse experiments where common types of mulch and crop architecture were combined. In the experiments without crop around winter, changes in the daily mean ag from 0.06 to 0.38 induced changes in the greenhouse cover albedo (ac), which ranged from about 0.20 to 0.42. In measurements carried out around winter, both the ag and ac decreased when the ratio of the outdoor diffuse-to-solar radiation increased, independently of the ground surface, indicating that a higher percentage of solar radiation was trapped by the greenhouse under diffuse than under sunny conditions. In crops grown horizontally (not vertically trained), the effect of ground mulching over ag vanishes progressively with the increase in lea...
Palabra/s clave
Greenhouse microclimate
Modelling