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ISHS Acta Horticulturae 455: V International Mango Symposium

FLOWERING SYNCHRONIZATION OF ‘SENSATION’ MANGO TREES BY WINTER PRUNING

Authors:   S.A. Oosthuyse, G. Jacobs
DOI:   10.17660/ActaHortic.1997.455.54
Abstract:
To synchronize flowering, all of the terminal shoots on separate sets of ‘Sensation’ mango trees were pruned on a number dates occurring just prior to and during the flowering period. Pruning was performed 5 cm beneath the site of apical bud or inflorescence attachment or at this site. Only trees in their ‘on’ year were pruned.

Flowering was effectively delayed in accordance with pruning date due to the consequent development of axillary inflorescences beneath the pruning cuts. Flowering was synchronized, and resulted in a reduction in variability of the stage of fruit maturation at harvest. Flowering intensity was increased by winter pruning due to the enhanced number of inflorescences developing per terminal shoot. Fruit drop was also increased. Tree yield was unaffected due to a compensatory increase in fruit size. Stage of fruit maturation at harvest and time of flowering were inversely related. A reduction in fruit retention and tree yield was associated with pruning the terminal shoots 5 cm beneath the site of apical bud or inflorescence attachment, as opposed to at this site.

Our results show that winter pruning can be recommended as a measure to synchronize the flowering of ‘Sensation’ mango trees when the trees are in a positive phase of bearing alternation.

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