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Fruit thinning using NAA shows potential for reducing biennial bearing of Barnea and Picual oil olive trees
Year:
2009
Source of publication :
Crop and Pasture Science
Authors :
דג, ארנון
;
.
Volume :
60
Co-Authors:
Dag, A., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post Negev 85280, Israel
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, Hebrew University of Jerusalem, Faculty of Agriculture, Food and Environment, Rehovot 76100, Israel
Lavee, S., Institute of Plant Science, Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
Riov, J., Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Faculty of Agriculture, Food and Environment, Rehovot 76100, Israel
Facilitators :
From page:
1124
To page:
1130
(
Total pages:
7
)
Abstract:
Biennial bearing is a major horticultural and economic drawback of olive (Olea europaea L.) cultivation, which particularly affects the olive oil industry under intensive production systems. The number of fruits per tree in an on-year is a primary determinant of the biennial cycle. While fruit thinning using NAA shortly after full bloom is commonly practiced to increase fruit size in table olives, the extent of its influence on biennial bearing is unknown. In the present study, the ability of that common naphthaleneacetic acid (NAA) treatment (100mg/L, 10 days after full bloom) to alleviate biennial bearing in two oil olive cultivars, Picual and Barnea, was poor, although significant influence on the number of fruit was evident solely in Barnea. Picual seemed less susceptible than Barnea to biennial bearing. Consequently, the effect of a broad range of NAA concentrations (0-320mg/L, 10 days after full bloom) on various yield parameters was investigated during a biennial cycle of Barnea trees. There was a gradual proportional decline in the on-year number of fruits from ∼50000 to 10000/tree in response to increasing NAA concentrations. The number of return fruits in the off-year was reciprocal to the on-year fruit load, but remained relatively small, below 15000/tree. The dynamic relationship between fruit load and fruit size in both on- and off-years was a significant compensation factor in fruit and oil yields. In both cultivars, an on-year fruit load smaller than 20000/tree is likely to provide consistent yearly oil yields ranging from 10 to 12kg/tree. The results demonstrate the possibility of using NAA post-bloom spraying to balance biennial bearing in oil olives. © 2009 CSIRO.
Note:
Related Files :
alternate bearing
BARNEA
Fruit load
fruit size
Oil content
Oleaceae
Olea europaea
tree
עוד תגיות
תוכן קשור
More details
DOI :
10.1071/CP09090
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
20694
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:38
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Scientific Publication
Fruit thinning using NAA shows potential for reducing biennial bearing of Barnea and Picual oil olive trees
60
Dag, A., Gilat Research Centre, Agricultural Research Organization, Ministry of Agriculture, Mobile Post Negev 85280, Israel
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, Hebrew University of Jerusalem, Faculty of Agriculture, Food and Environment, Rehovot 76100, Israel
Lavee, S., Institute of Plant Science, Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, Rehovot, Israel
Riov, J., Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Hebrew University of Jerusalem, Faculty of Agriculture, Food and Environment, Rehovot 76100, Israel
Fruit thinning using NAA shows potential for reducing biennial bearing of Barnea and Picual oil olive trees
Biennial bearing is a major horticultural and economic drawback of olive (Olea europaea L.) cultivation, which particularly affects the olive oil industry under intensive production systems. The number of fruits per tree in an on-year is a primary determinant of the biennial cycle. While fruit thinning using NAA shortly after full bloom is commonly practiced to increase fruit size in table olives, the extent of its influence on biennial bearing is unknown. In the present study, the ability of that common naphthaleneacetic acid (NAA) treatment (100mg/L, 10 days after full bloom) to alleviate biennial bearing in two oil olive cultivars, Picual and Barnea, was poor, although significant influence on the number of fruit was evident solely in Barnea. Picual seemed less susceptible than Barnea to biennial bearing. Consequently, the effect of a broad range of NAA concentrations (0-320mg/L, 10 days after full bloom) on various yield parameters was investigated during a biennial cycle of Barnea trees. There was a gradual proportional decline in the on-year number of fruits from ∼50000 to 10000/tree in response to increasing NAA concentrations. The number of return fruits in the off-year was reciprocal to the on-year fruit load, but remained relatively small, below 15000/tree. The dynamic relationship between fruit load and fruit size in both on- and off-years was a significant compensation factor in fruit and oil yields. In both cultivars, an on-year fruit load smaller than 20000/tree is likely to provide consistent yearly oil yields ranging from 10 to 12kg/tree. The results demonstrate the possibility of using NAA post-bloom spraying to balance biennial bearing in oil olives. © 2009 CSIRO.
Scientific Publication
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