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ISHS Acta Horticulturae 34: Symposium on growth Regulators in Fruit Production

EFFECT OF GROWTH REGULATORS ON SET AND DEVELOPMENT OF CITRUS FRUIT

Author:   A.H. Krezdorn
DOI:   10.17660/ActaHortic.1973.34.39
Abstract:
Most citrus cultivars set fruit well, but some do not. Most growth regulators, with the exception of GA3 have failed to improve fruit set. The use of GA3 may also cause undesirable reduction in fruit size, a delay in the development of orange peel color, leaf drop and twig death under some conditions. Even so, GA3 is used commercially in Florida and further research could lead to more widespread use. Establishment of priorities, team research and improved instrumentation must occur if the basic information needed for the successful use of growth regulators is to be attained. Horticulturists must also increase their efforts in the field, use related test plants that will permit year around research and develop other techniques to facilitate the determination of responses of specific cultivars to applications of growth regulators under carefully monitored environmental conditions.

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