Gibbrellic Acid GA3 manufacturers & exporters – Lotus Export
Gibberellic Acid GA3
Gibberellic acid is actually a group of related substances called gibberellins discovered as a metabolic byproduct of the fungus Gibberella fujikuroi, which causes the stems of growing plants or crops to elongate rapidly.
Gibberellic acid (GA3) is a very potent hormone whose natural occurrence in plants controls their development. Since GA3 regulates growth, applications of very low concentrations can have a profound effect. Timing is critical: too much GA3 may have an opposite effect from that desired; too little may require the plant to be repeatedly treated to sustain desired levels of GA3.
Benefits of Gibberellic Acid
- Overcoming dormancy. Treatment with high concentrations of GA3 is effective in overcoming dormancy and causing rapid germination of seed. Concentrations of about 2 ppm can cause tubers to sprout earlier.
- Premature flowering. If a plant is sufficiently developed, premature flowering may be induced by direct application of GA3 to young plants. This action is not sustained and treatment may have to be repeated. Formation of male flowers is generally promoted by concentrations of 10 to 200 ppm., female flowers by concentrations of 200 to 300 ppm. Concentrations of more than 600 ppm markedly suppresses initiation of both male and female flowers.
- Increased fruit set. When there is difficulty with fruit set because of incomplete pollination, GA3 may be effectively used to increase fruit set. The resulting fruit maybe partially or entirely seedless. GA3 has increased the total yield in greenhouse tomato crops both as a result of increased fruit set and more rapid growth of the fruit.
- Pollination within self-incompatible clones and between closely related species may sometimes be forced by the application of GA3 and cytokinin to the blooms at the time of hand pollination.
- Increased growth. GA3 applied near the terminal bud of trees may increase the rate of growth by stimulating more or less constant growth during the season. In a field experiment, the GA3 was applied as a 1% paste in a band around the terminal bud of trees. Treatment was repeated three times during the summer. Walnut tee growth was 8.5 ft. for treated trees, 1.5 ft. for untreated trees.
- Frost protection. Spraying fruit trees at full-blossom or when the blossoms begin to wither can offset the detrimental effects of frost.
- Root formation. GA3 inhibits the formation of roots in cuttings.