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Assessment of discretely measured indicators and maximum daily trunk shrinkage for detecting water stress in pomegranate trees

Opened Access Assessment of discretely measured indicators and maximum daily trunk shrinkage for detecting water stress in pomegranate trees

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Autor: Galindo Egea, A.
Rodríguez Hernández, Pedro
Mellisho, C. D.
Torrecillas, E.
Moriana Elvira, Alfonso
Cruz, Z. N.
Conejero Puente, W.
Moreno Lucas, Félix
Departamento: Universidad de Sevilla. Departamento de Ciencias Agroforestales
Fecha: 2013
Publicado en: Agricultural and Forest Meteorology, 180, 58-65
Tipo de documento: Artículo
Resumen: Measurements obtained by the continuous monitoring of trunk diameter fluctuations were comparedwith discrete measurements of midday stem water potential and midday leaf conductance (gl)in adult pomegranate trees (Punica granatum L. cv. Mollar de Elche). Control plants (T0) were irrigateddaily above their crop water requirements in order to attain non-limiting soil water conditions in 2009 and 2010, while T1 plants were subjected to water stress by depriving them of irrigation water for34 days in 2010, after which time irrigation was restored and plant recovery was studied for 7 days.T1 plants showed a substantial degree of water stress, which developed slowly. Maximum daily trunkshrinkage (MDS) was identified to be the most suitable plant-based indicator for irrigation scheduling inadult pomegranate trees, because its signal:noise ((T1/T0):coefficient of variation) ratio was higher thanthat for midday stem water potential((T1/T0):coefficient of variation) and gl((T0/T1):coefficient of...
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Tamaño: 801.6Kb
Formato: PDF

URI: http://hdl.handle.net/11441/32342

DOI: 10.1016/j.agrformet.2013.05.006

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