Sap flow of several olive trees estimated with the heat-pulse technique by continous monitoring of a single gauge (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Sap flow of several olive trees estimated with the heat-pulse technique by continous monitoring of a single gauge (Articolo in rivista) (literal)

Anno

• 2003-01-01T00:00:00+01:00 (literal)

Alternative label

• Giorio, P., Giorio, G. (2003)
  Sap flow of several olive trees estimated with the heat-pulse technique by continous monitoring of a single gauge
  in Environmental and experimental botany
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Giorio, P., Giorio, G. (literal)

Pagina inizio

• 9 (literal)

Pagina fine

• 20 (literal)

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• 49 (literal)

Rivista

• Environmental and experimental botany (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• IF 1,632 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto

• The compensation heat-pulse velocity (CHPV) technique to estimate sap flow in olive trees as a means of irrigation scheduling can be a difficult task because of the naturally heterogeneity of hydraulic functioning of sapwood area in this species, unless an unreasonably large number of CHPV gauges is used for accurate estimation of orchard transpiration. The approach used in this paper restricts the monitoring of a large number of both trees and gauges to a very short time (a day) and allows the long term estimation of transpiration of several olive trees by the continuous monitoring of a sole CHPV gauge installed in a single tree. In an experimental olive orchard in southern Italy, we monitored 6 CHPV gauges in 3 well irrigated trees (treatment T100) and 6 CHPV gauges in 3 rain-fed trees (treatment T0) at half hour intervals for 60 d during summer 1999. For each ith gauge at each day, we linearly regressed the sap flow (Qi, l h-1) against the mean sap flow of the all other n-1 gauges of the same treatment (Qmi). The regression parameters were used to obtain an estimation of Qmi (EQmi) throughout the trial using the data of any single ith gauge. In order to test the prediction power of the model of ith gauge, the estimated mean sap flow (EQmi) values were regressed day by day against the actually measured Qmi. Our analyses show the feasibility of estimating the transpiration rate of many trees by monitoring sap flow in a single tree by the use of a sole CHPV gauge. (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• P. Giorio: CNR- Istituto Sistemi Agricoli e Forestali del Mediterraneo Via cupa Patacca, 85, -80056- Ercolano (Naples) ITALY G. Giorio: Metapontum-Agrobios S.S. Jonica 106 Km 448,2 -75010- Metaponto (Matera)-ITALY (literal)

Titolo

• Sap flow of several olive trees estimated with the heat-pulse technique by continous monitoring of a single gauge (literal)

Abstract

• The use of the compensation heat-pulse velocity (CHPV) technique to estimate sap flow in olive trees as a means of irrigation scheduling can be a difficult task because of the naturally heterogeneity of hydraulic functioning of sapwood area in this species. As a result, the monitoring of an unreasonably large number of both trees and CHPV gauges per tree is needed for accurate estimation of orchard transpiration. The approach used in this paper restricts the monitoring of a large number of both trees and gauges to a very short time (a day) and allows the long term estimation of transpiration of several olive trees by the continuous monitoring of a sole CHPV gauge installed in a single tree. In an experimental olive orchard in southern Italy, we monitored 6 CHPV gauges in 3 well irrigated trees (treatment T100) and 6 CHPV gauges in 3 rain-fed trees (treatment T0) at half hour intervals for 60 d during summer 1999. For each ith gauge at each day, we linearly regressed the sap flow (Qi, l h-1) against the mean sap flow of the all other n-1 gauges of the same treatment (Qmi). The regression parameters were used to obtain an estimation of Qmi (EQmi) throughout the trial using the data of any single ith gauge. In order to test the prediction power of the model of ith gauge, the estimated mean sap flow (EQmi) values were regressed day by day against the actually measured Qmi. The same procedure was also applied at the time scale of a day, that is to the daily cumulative value of Qi and Qmi. In all cases, we obtained high statistical significance of the models applied to data as confirmed by the high adjusted R2 estimates. Our analyses show the feasibility of estimating the transpiration rate of many trees by monitoring sap flow in a single tree by the use of a sole CHPV gauge. The results of this work indicate that CHPV can be a useful and powerful method for irrigation scheduling for olive and other tree species. (literal)

Prodotto di

• Institute for Agricultural and Forest Systems in the Mediterranean (ISAFoM) (Istituto)

Autore CNR

• PASQUALE GIORIO (Persona)

Insieme di parole chiave

• Keywords of "Sap flow of several olive trees estimated with the heat-pulse technique by continous monitoring of a single gauge" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute for Agricultural and Forest Systems in the Mediterranean (ISAFoM) (Istituto)

Autore CNR di

• PASQUALE GIORIO (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Environmental and experimental botany (Rivista)

Insieme di parole chiave di

• Keywords of "Sap flow of several olive trees estimated with the heat-pulse technique by continous monitoring of a single gauge" (Insieme di parole chiave)