Improvement of ‘Afourer’ Mandarin Productivity in Isolation of Cross- Pollination

Authors

  • Alfredo Gravina Universidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal. Avenida Garzón 780, 12900 Montevideo, Uruguay
  • Guiliana Gambetta Universidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal. Avenida Garzón 780, 12900 Montevideo, Uruguay
  • Florencia Rey Universidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal. Avenida Garzón 780, 12900 Montevideo, Uruguay
  • Natalia Guimaraes Universidad de la República, Facultad de Agronomía, Departamento de Producción Vegetal. Avenida Garzón 780, 12900 Montevideo, Uruguay

DOI:

https://doi.org/10.31285/AGRO.20.2.4

Keywords:

gibberellic acid, girdling, fruit set, flowering, seeds

Abstract

‘Afourer’ mandarin is the first patented citrus cultivar introduced to Uruguay. Besides its excellent organoleptic characteristics, the ability to produce seedless fruit in the absence of cross-pollination is one of its main attributes. In Uruguay, bee-proof nets covering trees result in reduction of seed presence, but in some cases fruit set and yield are significantly reduced. With the objective of increasing tree productivity while avoiding bee’s pollination, treatments of gibberellic acid (GA3 50 mg L-1) at full bloom, trunk girdling 30 days after full bloom, and their combination, were applied in two orchards located in San José (Uruguay, 35 °SL). GA3 application combined with girdling consistently increased fruit number and yield per tree, while the individual treatments had varying responses. In the experiments, 95 % and 96 % of the fruit were seedless; fruit juice content, and juice total soluble solids and acidity were not modified by the treatments.

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Published

2016-12-01

How to Cite

1.
Gravina A, Gambetta G, Rey F, Guimaraes N. Improvement of ‘Afourer’ Mandarin Productivity in Isolation of Cross- Pollination. Agrocienc Urug [Internet]. 2016 Dec. 1 [cited 2024 Jun. 14];20(2):22-8. Available from: https://agrocienciauruguay.uy/index.php/agrociencia/article/view/190

Issue

Section

Plant production
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