Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions
Spain ranks as the world's leading exporter of citrus for fresh consumption. Manual harvest accounts for 50% of the total production costs. Mechanical harvest would increase labor productivity and benefits of growers. Efficiency of these machines depends on the varieties and operating conditions...
| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.11939/5696 |
| _version_ | 1855032319616745472 |
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| author | Moreno, Rosana Torregrosa, Antonio Moltó, Enrique Chueca, Patricia |
| author_browse | Chueca, Patricia Moltó, Enrique Moreno, Rosana Torregrosa, Antonio |
| author_facet | Moreno, Rosana Torregrosa, Antonio Moltó, Enrique Chueca, Patricia |
| author_sort | Moreno, Rosana |
| collection | ReDivia |
| description | Spain ranks as the world's leading exporter of citrus for fresh consumption. Manual harvest accounts for 50% of the total production costs. Mechanical harvest would increase labor productivity and benefits of growers. Efficiency of these machines depends on the varieties and operating conditions. Use of abscission chemicals has been promoted to increase the detachment rate of fruit without affecting its quality. This work is aimed at studying whether the mechanical harvest and/or the application of an abscission agent affect the quality and quantity of harvested fruit and tree defoliation under the conditions of citrus cultivation in Spain. Trials were made in a completely randomized experimental design. From 2008 to 2011, different orchards of mandarin and orange trees were sprayed with different doses of ethephon as abscission agent and harvested with a trunk shaker. Harvest related variables (detachment percentage, defoliation and fruit without calyx) were measured. The percentage of fruit detached by the trunk shaker ranged between 70 and 85% and it did not depend on the orchard. The shaker produced minimal damage to the bark when gripped incorrectly. Increased doses of ethephon increased fruit detachment except in 'Clemenules' orchard, but also increased the fruit without calyx in 1-9%. Moreover, ethephon promoted significant defoliation. Neither gummosis nor death of branches was observed. This work demonstrates that mechanical harvesting with trunk shakers may be a feasible solution for citrus cultivated in Spain for fresh market. Use of ethephon could only be recommended for citrus destined to industry and only for certain varieties. |
| format | article |
| id | ReDivia5696 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | ReDivia56962025-04-25T14:44:36Z Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions Moreno, Rosana Torregrosa, Antonio Moltó, Enrique Chueca, Patricia mechanization orange (Citrus sinensis (L.) Osb) clementine (Citrus clementina Hort. ex Tan.) ethephon efficiency FACTORS AFFECTING RESPONSE VALENCIA ORANGE FRUIT CMN-PYRAZOLE 2-CHLOROETHYLPHOSPHONIC ACID MECHANICAL HARVEST ETHYLENE EVOLUTION WATER RELATIONS CANOPY SHAKER SWEET ORANGE Spain ranks as the world's leading exporter of citrus for fresh consumption. Manual harvest accounts for 50% of the total production costs. Mechanical harvest would increase labor productivity and benefits of growers. Efficiency of these machines depends on the varieties and operating conditions. Use of abscission chemicals has been promoted to increase the detachment rate of fruit without affecting its quality. This work is aimed at studying whether the mechanical harvest and/or the application of an abscission agent affect the quality and quantity of harvested fruit and tree defoliation under the conditions of citrus cultivation in Spain. Trials were made in a completely randomized experimental design. From 2008 to 2011, different orchards of mandarin and orange trees were sprayed with different doses of ethephon as abscission agent and harvested with a trunk shaker. Harvest related variables (detachment percentage, defoliation and fruit without calyx) were measured. The percentage of fruit detached by the trunk shaker ranged between 70 and 85% and it did not depend on the orchard. The shaker produced minimal damage to the bark when gripped incorrectly. Increased doses of ethephon increased fruit detachment except in 'Clemenules' orchard, but also increased the fruit without calyx in 1-9%. Moreover, ethephon promoted significant defoliation. Neither gummosis nor death of branches was observed. This work demonstrates that mechanical harvesting with trunk shakers may be a feasible solution for citrus cultivated in Spain for fresh market. Use of ethephon could only be recommended for citrus destined to industry and only for certain varieties. 2017-06-01T10:12:51Z 2017-06-01T10:12:51Z 2015 MAR article publishedVersion Moreno, Rosana, Torregrosa, A., Moltó, E., Chueca, P. (2015). Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions. Spanish Journal of Agricultural Research, 13(1), -. 1695-971X http://hdl.handle.net/20.500.11939/5696 10.5424/sjar/2015131-6590 en openAccess Impreso |
| spellingShingle | mechanization orange (Citrus sinensis (L.) Osb) clementine (Citrus clementina Hort. ex Tan.) ethephon efficiency FACTORS AFFECTING RESPONSE VALENCIA ORANGE FRUIT CMN-PYRAZOLE 2-CHLOROETHYLPHOSPHONIC ACID MECHANICAL HARVEST ETHYLENE EVOLUTION WATER RELATIONS CANOPY SHAKER SWEET ORANGE Moreno, Rosana Torregrosa, Antonio Moltó, Enrique Chueca, Patricia Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions |
| title | Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions |
| title_full | Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions |
| title_fullStr | Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions |
| title_full_unstemmed | Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions |
| title_short | Effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under Mediterranean conditions |
| title_sort | effect of harvesting with a trunk shaker and an abscission chemical on fruit detachment and defoliation of citrus grown under mediterranean conditions |
| topic | mechanization orange (Citrus sinensis (L.) Osb) clementine (Citrus clementina Hort. ex Tan.) ethephon efficiency FACTORS AFFECTING RESPONSE VALENCIA ORANGE FRUIT CMN-PYRAZOLE 2-CHLOROETHYLPHOSPHONIC ACID MECHANICAL HARVEST ETHYLENE EVOLUTION WATER RELATIONS CANOPY SHAKER SWEET ORANGE |
| url | http://hdl.handle.net/20.500.11939/5696 |
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