Tree-to-tree variation in plant-based measurements as indicators of orange water status

Continella, A

Risultato della ricerca: Paper

Abstract

A study was conducted in order to determine the sensitivity of measured indicators of the plant water status in a citrus orchard. In ten adult orange (Citrus sinensis) trees, grafted on sour orange (C. aurantium) rootstocks and drip irrigated every second day, sap flow by Granier TDP probes, leaf and xylem water potential, gas exchange and leaf and canopy thermal imaging were hourly monitored all over the day. The evaluations were performed during two separate clear-sky days with different environmental conditions, respectively in the summer and autumn seasons. Variations of environmental components (reference evapotranspiration, solar radiation, vapour pressure deficit and temperature) were recorded. Each measurement tecnique resulted effective to perceive continuous plant water status at the proper scale (treeand orchard level). In particular, transpiration rate, water deficit stress indicators, stomatal conductance and closure were related to diurnal changes in ET0 and net radiation. Tree-to-tree variations in the diurnal dynamics of tree gas exchange were evaluated to develop up-scaling rules of tree-level water consumption measurements.
Lingua originaleEnglish
Stato di pubblicazionePublished - 2012

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Citrus aurantium
water
gas exchange
orchards
xylem water potential
sap flow
Citrus sinensis
vapor pressure
diurnal variation
leaf water potential
indicator species
rootstocks
evapotranspiration
stomatal conductance
Citrus
transpiration
solar radiation
image analysis
canopy
autumn

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title = "Tree-to-tree variation in plant-based measurements as indicators of orange water status",
abstract = "A study was conducted in order to determine the sensitivity of measured indicators of the plant water status in a citrus orchard. In ten adult orange (Citrus sinensis) trees, grafted on sour orange (C. aurantium) rootstocks and drip irrigated every second day, sap flow by Granier TDP probes, leaf and xylem water potential, gas exchange and leaf and canopy thermal imaging were hourly monitored all over the day. The evaluations were performed during two separate clear-sky days with different environmental conditions, respectively in the summer and autumn seasons. Variations of environmental components (reference evapotranspiration, solar radiation, vapour pressure deficit and temperature) were recorded. Each measurement tecnique resulted effective to perceive continuous plant water status at the proper scale (treeand orchard level). In particular, transpiration rate, water deficit stress indicators, stomatal conductance and closure were related to diurnal changes in ET0 and net radiation. Tree-to-tree variations in the diurnal dynamics of tree gas exchange were evaluated to develop up-scaling rules of tree-level water consumption measurements.",
author = "{Continella, A} and Antonio Motisi and Felice Romolo and Roberto Massenti",
year = "2012",
language = "English",

}

TY - CONF

T1 - Tree-to-tree variation in plant-based measurements as indicators of orange water status

AU - Continella, A

AU - Motisi, Antonio

AU - Romolo, Felice

AU - Massenti, Roberto

PY - 2012

Y1 - 2012

N2 - A study was conducted in order to determine the sensitivity of measured indicators of the plant water status in a citrus orchard. In ten adult orange (Citrus sinensis) trees, grafted on sour orange (C. aurantium) rootstocks and drip irrigated every second day, sap flow by Granier TDP probes, leaf and xylem water potential, gas exchange and leaf and canopy thermal imaging were hourly monitored all over the day. The evaluations were performed during two separate clear-sky days with different environmental conditions, respectively in the summer and autumn seasons. Variations of environmental components (reference evapotranspiration, solar radiation, vapour pressure deficit and temperature) were recorded. Each measurement tecnique resulted effective to perceive continuous plant water status at the proper scale (treeand orchard level). In particular, transpiration rate, water deficit stress indicators, stomatal conductance and closure were related to diurnal changes in ET0 and net radiation. Tree-to-tree variations in the diurnal dynamics of tree gas exchange were evaluated to develop up-scaling rules of tree-level water consumption measurements.

AB - A study was conducted in order to determine the sensitivity of measured indicators of the plant water status in a citrus orchard. In ten adult orange (Citrus sinensis) trees, grafted on sour orange (C. aurantium) rootstocks and drip irrigated every second day, sap flow by Granier TDP probes, leaf and xylem water potential, gas exchange and leaf and canopy thermal imaging were hourly monitored all over the day. The evaluations were performed during two separate clear-sky days with different environmental conditions, respectively in the summer and autumn seasons. Variations of environmental components (reference evapotranspiration, solar radiation, vapour pressure deficit and temperature) were recorded. Each measurement tecnique resulted effective to perceive continuous plant water status at the proper scale (treeand orchard level). In particular, transpiration rate, water deficit stress indicators, stomatal conductance and closure were related to diurnal changes in ET0 and net radiation. Tree-to-tree variations in the diurnal dynamics of tree gas exchange were evaluated to develop up-scaling rules of tree-level water consumption measurements.

UR - http://hdl.handle.net/10447/104291

M3 - Paper

ER -