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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Olive orchard irrigation with reclaimed wastewater: Agronomic and environmental considerations
Year:
2011
Authors :
אראל, רן
;
.
בן-גל, אלון
;
.
דג, ארנון
;
.
ירמיהו, אורי
;
.
סגל, ערן
;
.
סוריאנו, שושי
;
.
ציפורי, יצחק
;
.
Volume :
140
Co-Authors:
Segal, E., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Dag, A., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Ben-Gal, A., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Zipori, I., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Erel, R., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Suryano, S., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, P.O.B. 6, Bet-Dagan, Israel
Yermiyahu, U., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Facilitators :
From page:
454
To page:
461
(
Total pages:
8
)
Abstract:
The olive (Olea europaea) oil industry is experiencing a transition from traditional rain-fed to intensively managed irrigated orchards. Moreover, since fresh water resources in typical olive cultivation regions are often scarce, alternative water sources, often marginal in quality, are increasingly used for the irrigation of olives. Utilization of reclaimed wastewater (RWW) increases the susceptibility of olive trees to osmotic stress and augments the potential of groundwater contamination by nutrients and salts. The objective of this study was to evaluate tree growth and productivity and to quantify nitrate and chloride (Cl) losses in an olive orchard irrigated with RWW. A four year field study compared two olive tree varieties, 'Barnea' and 'Leccino', and three treatments: (i) fresh water application with commercial fertilizer at recommended rates (Fr), (ii) RWW application with commercial fertilizer at recommended rates (Re) and (iii) RWW application with commercial fertilizer reduced according to the amounts of the nutritional constituents in the wastewater itself (Re-). No significant difference was found in nutrient and mineral accumulation in diagnostic leaves and no differences in trunk growth, fruit production or oil yields were observed between treatments. In spite of this, lower measured Cl concentration in diagnostic leaves of 'Barnea' and higher Cl concentrations in its root zone relative to 'Leccino' suggested that 'Barnea' trees better controlled Cl uptake. While similar amounts of water were applied, the Re and Re- treatments loaded the soil profile with 1.75 times more Cl then the Fr treatment. Additionally, significantly more nitrates were transported out of the root zone in the Re treatment compared to Fr and Re- for both cultivars. We conclude that RWW used for irrigating olive oil orchards had no effect on vegetative growth and productivity but increased salt loads into and beyond the root zone. The nutritional constituents in the RWW used to irrigate olives should be accounted for in order to increase fertilizer application efficiency and minimize the transport of nutrients into groundwater. © 2011 Elsevier B.V.
Note:
Related Files :
agricultural production
Agronomy
BARNEA
fertilizer application
Olea europaea
rhizosphere
Wastewater
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.agee.2011.01.009
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23942
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:03
Scientific Publication
Olive orchard irrigation with reclaimed wastewater: Agronomic and environmental considerations
140
Segal, E., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Dag, A., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Ben-Gal, A., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Zipori, I., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Erel, R., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Suryano, S., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, P.O.B. 6, Bet-Dagan, Israel
Yermiyahu, U., Gilat Research Center, Agricultural Research Organization, M.P. Negev 85280, Israel
Olive orchard irrigation with reclaimed wastewater: Agronomic and environmental considerations
The olive (Olea europaea) oil industry is experiencing a transition from traditional rain-fed to intensively managed irrigated orchards. Moreover, since fresh water resources in typical olive cultivation regions are often scarce, alternative water sources, often marginal in quality, are increasingly used for the irrigation of olives. Utilization of reclaimed wastewater (RWW) increases the susceptibility of olive trees to osmotic stress and augments the potential of groundwater contamination by nutrients and salts. The objective of this study was to evaluate tree growth and productivity and to quantify nitrate and chloride (Cl) losses in an olive orchard irrigated with RWW. A four year field study compared two olive tree varieties, 'Barnea' and 'Leccino', and three treatments: (i) fresh water application with commercial fertilizer at recommended rates (Fr), (ii) RWW application with commercial fertilizer at recommended rates (Re) and (iii) RWW application with commercial fertilizer reduced according to the amounts of the nutritional constituents in the wastewater itself (Re-). No significant difference was found in nutrient and mineral accumulation in diagnostic leaves and no differences in trunk growth, fruit production or oil yields were observed between treatments. In spite of this, lower measured Cl concentration in diagnostic leaves of 'Barnea' and higher Cl concentrations in its root zone relative to 'Leccino' suggested that 'Barnea' trees better controlled Cl uptake. While similar amounts of water were applied, the Re and Re- treatments loaded the soil profile with 1.75 times more Cl then the Fr treatment. Additionally, significantly more nitrates were transported out of the root zone in the Re treatment compared to Fr and Re- for both cultivars. We conclude that RWW used for irrigating olive oil orchards had no effect on vegetative growth and productivity but increased salt loads into and beyond the root zone. The nutritional constituents in the RWW used to irrigate olives should be accounted for in order to increase fertilizer application efficiency and minimize the transport of nutrients into groundwater. © 2011 Elsevier B.V.
Scientific Publication
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