Physicochemical Properties and Formulation Forms of Gibberellic Acid GA3
Gibberellic Acid (GA3) is a plant hormone that promotes stem and leaf growth, reduces the shedding of cotton buds and bolls, increases barley yields, and improves fruit set rates for crops such as grapes, citrus, and pears.
I. Physicochemical Properties of Gibberellic Acid:
Description: White crystalline powder. Melting point: 233–235°C (decomposition). Soluble in alcohols, acetone, ethyl acetate, sodium bicarbonate solution, and pH 6.2 phosphate buffer; sparingly soluble in water and diethyl ether. Aqueous solutions are acidic and unstable (prone to losing efficacy). Decomposes easily in the presence of alkalis. Turns deep red upon contact with sulfuric acid.
Production Method: Gibberellic Acid can be mass-produced via fermentation. *Gibberella fujikuroi* (a type of *Fusarium* fungus) is cultured in a medium containing wheat bran, sucrose, and inorganic salts; the fungus produces Gibberellic Acid as a metabolic byproduct. The fermentation broth undergoes solvent extraction and concentration to yield Gibberellic Acid crystals.
Uses: Gibberellic Acid (GA3) is a plant growth hormone that promotes stem and leaf growth, induces early bolting and flowering, stimulates the germination of seeds, tubers, and root tubers, and encourages fruit growth, increasing fruit set rates or inducing the formation of seedless fruit. It increases yields for crops such as potatoes, tomatoes, rice, wheat, cotton, soybeans, peas, tobacco, and fruit trees.
However, excessive application of Gibberellic Acid (GA3) can cause plants to develop thin, yellow shoots—a condition known as chlorosis or "leggy" growth—which can actually reduce yields. Gibberellic Acid (GA3) is also used in the production of malt from barley. It also promotes insect development.
Production and Handling Precautions:
1. Gibberellic Acid (GA3) is insoluble in water;
2. It is prone to hydrolysis;
3. It is heat-sensitive; low-temperature storage is recommended;
4. It has a short shelf life;
5. It has multiple functions, but different crops exhibit varying levels of sensitivity, requiring specific treatment approaches;
6. Powder formulations offer good stability. II. Gibberellic Acid formulations:
Powders, soluble powders, effervescent formulations, soluble tablets, pastes; aqueous solutions, emulsifiable concentrates, liquid formulations.
I. Physicochemical Properties of Gibberellic Acid:
Description: White crystalline powder. Melting point: 233–235°C (decomposition). Soluble in alcohols, acetone, ethyl acetate, sodium bicarbonate solution, and pH 6.2 phosphate buffer; sparingly soluble in water and diethyl ether. Aqueous solutions are acidic and unstable (prone to losing efficacy). Decomposes easily in the presence of alkalis. Turns deep red upon contact with sulfuric acid.
Production Method: Gibberellic Acid can be mass-produced via fermentation. *Gibberella fujikuroi* (a type of *Fusarium* fungus) is cultured in a medium containing wheat bran, sucrose, and inorganic salts; the fungus produces Gibberellic Acid as a metabolic byproduct. The fermentation broth undergoes solvent extraction and concentration to yield Gibberellic Acid crystals.
Uses: Gibberellic Acid (GA3) is a plant growth hormone that promotes stem and leaf growth, induces early bolting and flowering, stimulates the germination of seeds, tubers, and root tubers, and encourages fruit growth, increasing fruit set rates or inducing the formation of seedless fruit. It increases yields for crops such as potatoes, tomatoes, rice, wheat, cotton, soybeans, peas, tobacco, and fruit trees.
However, excessive application of Gibberellic Acid (GA3) can cause plants to develop thin, yellow shoots—a condition known as chlorosis or "leggy" growth—which can actually reduce yields. Gibberellic Acid (GA3) is also used in the production of malt from barley. It also promotes insect development.
Production and Handling Precautions:
1. Gibberellic Acid (GA3) is insoluble in water;
2. It is prone to hydrolysis;
3. It is heat-sensitive; low-temperature storage is recommended;
4. It has a short shelf life;
5. It has multiple functions, but different crops exhibit varying levels of sensitivity, requiring specific treatment approaches;
6. Powder formulations offer good stability. II. Gibberellic Acid formulations:
Powders, soluble powders, effervescent formulations, soluble tablets, pastes; aqueous solutions, emulsifiable concentrates, liquid formulations.
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