... Gibberellic acid-3 (GA-3) is a naturally occurring plant growth regulator that may cause a variety of effects, including the stimulation ... or other prolonged pre-treatments. Gibberellins are used in agriculture for various purposes. GA-3 is sprayed on seedless grapes to ... , lemons, blueberries, sweet and tart cherries, artichokes and other crops to decrease or increase fruit set, delay rind aging, etc ...