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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Evaluation of irrigation in a converted, rain fed olive orchard: The transition year
Year:
2008
Source of publication :
Acta Horticulturae
Authors :
בן-גל, אלון
;
.
דג, ארנון
;
.
ירמיהו, אורי
;
.
פיינגולד, אינה
;
.
פרסנוב, יבגני
;
.
ציפורי, יצחק
;
.
Volume :
792
Co-Authors:
Ben-Gal, A., Gilat Research Center, Agricultural Research Organization, Israel
Dag, A., Gilat Research Center, Agricultural Research Organization, Israel
Yermiyahu, U., Gilat Research Center, Agricultural Research Organization, Israel
Tsipori, I., Gilat Research Center, Agricultural Research Organization, Israel
Presnov, E., Gilat Research Center, Agricultural Research Organization, Israel
Faingold, I., Gilat Research Center, Agricultural Research Organization, Israel
Kerem, Z., Faculty of Agriculture, Hebrew University of Jerusalem, Jerusalem, Israel
Facilitators :
From page:
99
To page:
106
(
Total pages:
8
)
Abstract:
Olives for oil production are traditionally grown without irrigation. In spite of this, water application during dry growing seasons has been shown to substantially increase yields and consequently, it is becoming more and more common to find irrigation systems in established orchards in traditional regions of olive cultivation. The reported research has been initiated in order to determine the response of mature 'Souri' olive (Olea europea) trees, previously cultivated under rain fed conditions, to irrigation. Results from the initial growing season following introduction of treatments are presented. Trees in a 15 year old orchard in Bakaa el Garbiya receive one of seven irrigation treatments (0, 25, 50, 75, 100, and 125% return of reference evapotranspiration applied throughout the season or 50% annual return concentrated during predetermined growing periods). In August samplings, mid-day stem water potential, which ranged from -2.7 MPa in the rainfed to -2.1 MPa in trees receiving 125% return, was negatively correlated with water dosage. Vegetative growth rate was positively correlated to the water dosage. Fruit number was determined prior to initiation of irrigation treatments. Fruit growth rate was retarded in rain fed trees but, the increased size of irrigated fruit did not affect overall oil production per fruit as lower oil content was found in fruit from irrigated trees (22-23% compared to 27% in non-irrigated trees). Oil from irrigated trees had higher free fatty acids and lower content of polyphenol compounds. Furthermore, oil from the rain fed trees possessed higher values of positive organoleptic attributes including "fruity", "pungent" and "bitter" han oil from trees receiving maximum irrigation return. In the initial year of water application, irrigation quantity increased vegetative growth, had no quantitative effect on oil production and appeared to negatively affect oil quality. Timing of deficit irrigation was not found to have any effect on the measured parameters.
Note:
Related Files :
Deficit irrigation
irrigation
Oil quality
Oleaceae
Olea europaea
Olea europaea (internal keyword)
Olea europea
SOURI
water application
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר מתוך כינוס
;
.
Language:
אנגלית
Editors' remarks:
ID:
18509
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:22
Scientific Publication
Evaluation of irrigation in a converted, rain fed olive orchard: The transition year
792
Ben-Gal, A., Gilat Research Center, Agricultural Research Organization, Israel
Dag, A., Gilat Research Center, Agricultural Research Organization, Israel
Yermiyahu, U., Gilat Research Center, Agricultural Research Organization, Israel
Tsipori, I., Gilat Research Center, Agricultural Research Organization, Israel
Presnov, E., Gilat Research Center, Agricultural Research Organization, Israel
Faingold, I., Gilat Research Center, Agricultural Research Organization, Israel
Kerem, Z., Faculty of Agriculture, Hebrew University of Jerusalem, Jerusalem, Israel
Evaluation of irrigation in a converted, rain fed olive orchard: The transition year
Olives for oil production are traditionally grown without irrigation. In spite of this, water application during dry growing seasons has been shown to substantially increase yields and consequently, it is becoming more and more common to find irrigation systems in established orchards in traditional regions of olive cultivation. The reported research has been initiated in order to determine the response of mature 'Souri' olive (Olea europea) trees, previously cultivated under rain fed conditions, to irrigation. Results from the initial growing season following introduction of treatments are presented. Trees in a 15 year old orchard in Bakaa el Garbiya receive one of seven irrigation treatments (0, 25, 50, 75, 100, and 125% return of reference evapotranspiration applied throughout the season or 50% annual return concentrated during predetermined growing periods). In August samplings, mid-day stem water potential, which ranged from -2.7 MPa in the rainfed to -2.1 MPa in trees receiving 125% return, was negatively correlated with water dosage. Vegetative growth rate was positively correlated to the water dosage. Fruit number was determined prior to initiation of irrigation treatments. Fruit growth rate was retarded in rain fed trees but, the increased size of irrigated fruit did not affect overall oil production per fruit as lower oil content was found in fruit from irrigated trees (22-23% compared to 27% in non-irrigated trees). Oil from irrigated trees had higher free fatty acids and lower content of polyphenol compounds. Furthermore, oil from the rain fed trees possessed higher values of positive organoleptic attributes including "fruity", "pungent" and "bitter" han oil from trees receiving maximum irrigation return. In the initial year of water application, irrigation quantity increased vegetative growth, had no quantitative effect on oil production and appeared to negatively affect oil quality. Timing of deficit irrigation was not found to have any effect on the measured parameters.
Scientific Publication
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