Other uses for gibberellins (GA3)
1. GA3 spray has been shown to stimulate bud break and vegetative shoot growth.
2. GA3 spray can inhibit flowering in citrus if applied prior to the irreversible commitment to flowering.
3. GA3 spray prevents senescence, and keeps citrus fruit green longer if sprayed prior to color break to delay rind senescence of the fruit in late harvested orchards, and when fruit is to be left hanging for an extended period . So reliable are the annual economic benefits derived from gibbing citrus fruit for late harvest, it has become a standard horticultural practice in most citrus producing countries of the world.
4. GA3 promotes seed germination..
5. When the gibberellin concentration is lower than the ABA concentration, the tree becomes dormant;, when the gibberellin concentration is greater than the ABA concentration, dormancy is overcome and growth resumes.
6. GA3 promotes shoot elongation, by causing cell division in the cells of the node and also causing these cells to elongate, resulting in elongation of the internode, and elongation of the shoot.
7. GA3 promotes fruit set.
8. GA3 promotes leaf expansion.
9. GA3 is pH dependent. High alkaline solutions causes decomposition, and loss of activity of GA3. A pH lower than 4 also causes decomposition. At pH 4 the uptake of the chemical is three fold greater that at pH 7.
Millet
