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Effects of canopy size and water stress over the crop coefficient of a "Tempranillo" vineyard in south-western Spain

Autor Picón-Toro, J.; González-Dugo, Victoria ; Uriarte, D.; Mancha, L. A.; Testi, Luca
Fecha de publicación sep-2012
Citación Irrigation Science 30(5): 419-432 (2012)
ResumenThis paper describes the assessment of the crop coefficient of an irrigated Tempranillo vineyard measured in a weighing lysimeter during 5 years in south-western Spain. During the first year of the study (2006), young vines displayed a different canopy growth compared to the subsequent years. From 2007 to 2010, vines experienced 2 years with no restriction in water supply, and two other years with short periods of crop water stress. Basal crop coefficient (K cb) started from 0. 2 at bud-break until 1. 0 at full development in every year, being this maximum management-dependent. K cb showed a good correlation with canopy size indices, which allows to interpolate these results to a wide range of commercial vine systems that are usually managed with lower vegetation size. Moreover, a simple linear model of crop evapotranspiration reduction with relative water content is presented, allowing the estimation of consumptive water use under deficit irrigation conditions. © 2012 Springer-Verlag.
URI http://hdl.handle.net/10261/87575
Identificadoresdoi: 10.1007/s00271-012-0351-3
issn: 0342-7188
e-issn: 1432-1319
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