What is gibberellic acid?
What is gibberellic acid?
Gibberellic acid is a plant hormone widely used in agriculture and horticulture to promote plant growth and development. It was first discovered during rice cultivation due to its remarkable effect on plant growth.
In practice, gibberellic acid has been shown to have significant yield-enhancing effects on crops such as cotton, grapes and vegetables. It can be used to promote seed germination, plant growth and early flowering, and the methods of use include application, seed dressing, root dipping and spraying. However, when too much gibberellic acid is applied, the plant may develop yellow and slender branches, i.e. the phenomenon of losing green and growing in vain, which in turn affects the yield.
Mechanism of action of gibberellic acid
Gibberellic acid affects the overall growth of the plant by regulating the balance of growth hormones in the plant and promoting cell division and elongation. It breaks the dormancy period of seeds, improves germination rate and accelerates plant growth.
Effects of gibberellic acids on plant growth
Gibberellic acid is an important plant hormone and antagonist of growth inhibitors such as polyphenols and chlormequat chloride, and has a variety of physiological effects, including:
Promoting stem elongation growth: it significantly promotes the growth of plant stems, especially effective in dwarf mutant varieties. It acts primarily on pre-existing internode elongation rather than promoting an increase in the number of nodes and is not inhibited by supra-optimal concentrations.
Induction of flowering: It can replace the length of sunshine and low temperature to induce flowering of certain plants, and it can significantly promote the opening of flowers of plants whose flower buds have been differentiated.
Breaking dormancy: It can make dormant potato germinate quickly, and can also replace light and low temperature to break the dormancy of seeds that need light and low temperature to germinate.
Promote male flower differentiation: for dioecious plants with the same flowers, the proportion of male flowers increases after treatment with gibberellic acid; for female plants of dioecious plants, male flowers will also be produced after treatment.
Other physiological effects: It can enhance the mobilizing effect of growth hormone on nutrients, promote fruit-sitting and unisexual fruiting in certain plants, and delay leaf senescence. It can also promote cell division and differentiation.
How to use gibberellic acid?
Dosage of Gerythromycin
The dosage of gibberellic acid needs to be determined according to the specific crop and application. Usually, the dosage range of gibberellic acid is between 10-100 ppm, but the exact dosage needs to be adjusted according to the experimental results and specific needs.
Mixing method of gibberellic acid
Erythromycin is usually sold in powder form and needs to be dissolved in water for use. When mixing, the gibberellic acid powder should be dissolved in a small amount of alcohol before adding an appropriate amount of water to ensure a homogeneous solution.
Application of gibberellic acid in different crops
Application in grapes
In grape growing, gibberellic acid is used after flowering and when the fruit begins to expand and can be used to increase the size and quality of the fruit.
Application in apples
The use of gibberellic acids in apple trees can promote fruit development and increase yield. It is most effective when applied after flowering.
Application in Rice
Erythromycin in rice can promote seed germination and seedling growth and increase yield. Care should be taken to control the dosage when using it to avoid overdose leading to adverse consequences.
Application in sugarcane
In sugarcane cultivation, gibberellic acid can promote the elongation of stem nodes and improve the accumulation of sugar, thus increasing the yield and quality.
Application in marijuana
Gibberellic acid in marijuana cultivation promotes seed germination and plant growth, increasing yield and quality. Use requires attention to legality and compliance.
gibberellic acid in Seed Treatment
Seed germination
The use of gibberellic acid in seed germination can significantly improve germination rates, especially for some seeds that have difficulty germinating.
Seed treatment method
Soaking seeds in a gibberellic acid solution for a period of time, followed by conventional planting, can improve germination rates and seedling growth.
Potential side effects and precautions of gibberellic acid
When using gibberellic acid, you need to pay attention to the dosage and application method to avoid overdose that leads to abnormal plant growth. Also, direct contact with skin and eyes should be avoided and protective gear should be worn when using.
Erythromycin Storage and Shelf Life
Erythromycin needs to be stored away from heat and direct sunlight, and can usually be kept for about a year. A well-mixed gibberellic acid solution is recommended to be used up within a short period of time to ensure effectiveness.
Conclusion
As an effective plant growth hormone, gibberellic acid is widely used in agriculture and horticulture. Through the rational use of gibberellic acid, the yield and quality of crops can be significantly improved. However, attention should be paid to the dosage and method of use to avoid unnecessary risks.
Frequently Asked Questions (FAQs)
Is gibberellic acid effective on all plants?
Erythromycin is effective on most plants, but the exact effect varies depending on the plant species and growing environment.
How do I know if gibberellic acids have failed?
If the plant does not show the expected growth response after application, it is possible that the gibberellic acid has failed or the dosage is not appropriate.
Can gibberellic acid be mixed with other fertilizers?
Yes, but you need to make sure that there is no chemical reaction between Erythromycin and the fertilizer that can affect the effect.
Is Erythromycin harmful to human body?
Direct contact with Erythromycin is harmful to human body, you need to pay attention to the protection when using, avoid accidental ingestion or contact with skin.
What is the best time to use Erythromycin?
The best time to use Erythromycin varies from crop to crop, usually it is most effective when used during the critical period of growth.