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Interactions between fruit load and macroelement concentrations in fertigated olive (Olea europaea L.) trees under arid saline conditions
Year:
2013
Source of publication :
Scientia Horticulturae
Authors :
Ben-Gal, Alon
;
.
Dag, Arnon
;
.
Yermiyahu, Uri
;
.
Zipori, Isaac
;
.
Volume :
152
Co-Authors:
Bustan, A., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Avni, A., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel, Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Robert H. Smith Faculty of Agriculture Food and Environment, Hebrew University of Jerusalem, Rehovot 76100, Israel
Yermiyahu, U., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Ben-Gal, A., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Riov, J., Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Robert H. Smith Faculty of Agriculture Food and Environment, Hebrew University of Jerusalem, Rehovot 76100, Israel
Erel, R., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Zipori, I., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Dag, A., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Facilitators :
From page:
44
To page:
55
(
Total pages:
12
)
Abstract:
While the intensification of olive cultivation has brought about increased yields and allowed the expansion of olive production to arid and saline environments, alternate bearing - a significant problem of the olive oil industry - remains unresolved. Developing fruit is a major sink for nutrients, and therefore extreme fruit loads are likely to disturb tree-scale mineral balance. Mineral availability, a prerequisite of plant performance, is largely determined by an intrinsic ability to store and remobilize nutrients timely, according to seasonal supply and demand. Unfavorable environmental conditions (aridity and salinity) might disrupt nutrient uptake and interrupt tree growth and reproduction. The objectives of the present study were: (1) to characterize the effect of fruit load on annual macroelement balance in olive trees under intensive management practices in a saline and arid environment and (2) to identify acute risks of mineral deficiencies occurring along the annual production cycle under the same conditions. Nitrogen, P, K, Na, and Ca concentrations were determined every 2 months during 2006 in the leaves, branches, bark, and roots of corresponding heavily (On) and lightly (Off) yielding 'Barnea' trees grown under arid and saline conditions. Nitrogen concentrations in trees were generally unaffected by the fruit load. During fruit development, P and K concentrations were significantly higher in leaves of Off-trees. Potassium concentrations also showed a typical alternate pattern in bark and roots. Sodium concentrations were particularly higher in roots, while Ca accumulated in leaves. An alternating pattern was observed for Na in branches and for Ca in leaves, pointing to a possible mechanism employing Ca to avoid Na-toxic hazards in leaves of fruit-loaded trees. Large quantities of N, P, and K were found in the fruit at harvest. The role of the fruit as an ultimate sink of N, P, K, and Ca, versus the function of leaves or branches as instantaneous sources of these nutrients was demonstrated in a separate fruit removal experiment in 'Coratina'. Macroelement balance at the whole tree level calculated after harvest indicated that the functional reserves of N and P, but not of K, were sufficient to furnish a successive On-year yield. It is concluded that no risks of acute mineral deficiency occur during the biennial cycle. Consideration of alternate bearing cycles is necessary for optimization of N, P, and K application in olive in order to achieve more efficient production, improved produce quality, and minimized environmental consequences. © 2013 Elsevier B.V.
Note:
Related Files :
alternate bearing
arid environment
BARNEA
fertilizer application
food quality
growth response
Olea europaea
Show More
Related Content
More details
DOI :
10.1016/j.scienta.2013.01.013
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21632
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:45
Scientific Publication
Interactions between fruit load and macroelement concentrations in fertigated olive (Olea europaea L.) trees under arid saline conditions
152
Bustan, A., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Avni, A., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel, Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Robert H. Smith Faculty of Agriculture Food and Environment, Hebrew University of Jerusalem, Rehovot 76100, Israel
Yermiyahu, U., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Ben-Gal, A., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Riov, J., Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Robert H. Smith Faculty of Agriculture Food and Environment, Hebrew University of Jerusalem, Rehovot 76100, Israel
Erel, R., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Zipori, I., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Dag, A., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post, Negev 85280, Israel
Interactions between fruit load and macroelement concentrations in fertigated olive (Olea europaea L.) trees under arid saline conditions
While the intensification of olive cultivation has brought about increased yields and allowed the expansion of olive production to arid and saline environments, alternate bearing - a significant problem of the olive oil industry - remains unresolved. Developing fruit is a major sink for nutrients, and therefore extreme fruit loads are likely to disturb tree-scale mineral balance. Mineral availability, a prerequisite of plant performance, is largely determined by an intrinsic ability to store and remobilize nutrients timely, according to seasonal supply and demand. Unfavorable environmental conditions (aridity and salinity) might disrupt nutrient uptake and interrupt tree growth and reproduction. The objectives of the present study were: (1) to characterize the effect of fruit load on annual macroelement balance in olive trees under intensive management practices in a saline and arid environment and (2) to identify acute risks of mineral deficiencies occurring along the annual production cycle under the same conditions. Nitrogen, P, K, Na, and Ca concentrations were determined every 2 months during 2006 in the leaves, branches, bark, and roots of corresponding heavily (On) and lightly (Off) yielding 'Barnea' trees grown under arid and saline conditions. Nitrogen concentrations in trees were generally unaffected by the fruit load. During fruit development, P and K concentrations were significantly higher in leaves of Off-trees. Potassium concentrations also showed a typical alternate pattern in bark and roots. Sodium concentrations were particularly higher in roots, while Ca accumulated in leaves. An alternating pattern was observed for Na in branches and for Ca in leaves, pointing to a possible mechanism employing Ca to avoid Na-toxic hazards in leaves of fruit-loaded trees. Large quantities of N, P, and K were found in the fruit at harvest. The role of the fruit as an ultimate sink of N, P, K, and Ca, versus the function of leaves or branches as instantaneous sources of these nutrients was demonstrated in a separate fruit removal experiment in 'Coratina'. Macroelement balance at the whole tree level calculated after harvest indicated that the functional reserves of N and P, but not of K, were sufficient to furnish a successive On-year yield. It is concluded that no risks of acute mineral deficiency occur during the biennial cycle. Consideration of alternate bearing cycles is necessary for optimization of N, P, and K application in olive in order to achieve more efficient production, improved produce quality, and minimized environmental consequences. © 2013 Elsevier B.V.
Scientific Publication
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