The use of gibberellic acid (GA) is one of the most effective management tools available to citrus growers to improve rind quality and delay rind aging. Appropriate use of GA can result in better packouts and market outturns. Applying GA can be a costly exercise in terms of time and money, so it needs to be done right. this Primefact outlines how to get the most out of your GA sprays by providing information to help you decide when and how to apply GA to navel oranges.
GA is a naturally-occurring plant growth hormone found in most plant tissues. It is involved in physiological processes such as flowering, seed set and fruit development, and is used in selected horticultural crops to manipulate flowering and fruit development. The application of GA to navel oranges can delay fruit colour development, improve rind firmness and fruit quality at harvest, improve packouts, extend shelf-life, and market outturns. the effects of GA are dependent on both the timing of application and the concentration of GA applied.
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Source:
Katina Lindhout, Michael Treeby, Sandra Hardy, Ken Bevington
NSW DPI – Prime Facts
www.dpi.nsw.gov.au