How to use and dosage of gibberellic acid

Gibberellic acid is a broad-spectrum plant growth regulator and one of the five common endogenous hormones in plants. Its main function is to promote the growth and development of crops, make them mature earlier, increase yield and improve quality. So what is the usage and dosage of gibberellic acid? Let’s learn more about it below.

Dosage and Usage of Gibberellic Acid

1. Rice

Apply the pesticide once when the mother plant is 20-30% heading and again when the mother plant is 50-60% heading. This can significantly increase the rice fruit setting rate and increase yield.

2. Cotton

Soaking seeds in a 20 mg/L gibberellin solution for 6-8 hours before sowing can reduce the adverse conditions such as low temperature that delay germination or cause seed rot, and promote the germination of cotton seeds .

3. Citrus

After the citrus trees have bloomed, spray the entire tree with 50 grams of gibberellin mixed with 1,000 kilograms of water. Spraying the citrus trees with the same concentration of gibberellin again after 20 days can reduce the physiological fruit drop of the citrus trees.

4. Grapes

About 7-10 days after the grapes bloom, you can use 200-500 mg of gibberellic acid solution to spray the fruit bunches once, which is beneficial to promote the formation of seedless fruits.

5. Mushrooms

When the primordium is formed, the seed body can be enlarged and the yield can be significantly increased by dipping the material block in a 350-400 mg/L gibberellin solution.

6. Chili

Spraying the flowers once during the flowering period with a 20-40 mg/L concentration of gibberellin solution can promote fruit setting and increase yield.

7. Cucumber

When the first true leaf of the all-female cucumber seedlings is fully expanded, spray the seedlings with 1000 mg/L gibberellic acid solution three times within one week to induce the development of male flowers.

The use of gibberellic acid

1. Pay attention to dilution

Gibberellic acid has low water solubility. Before use, dissolve it in a small amount of alcohol or white wine, and then add water to dilute it to the required concentration.

2. Be careful about mixing

Gibberellic acid cannot be mixed with alkaline substances, but can be mixed with acidic and neutral fertilizers and pesticides . The yield-increasing effect is better when mixed with urea.

3. Prepare and use immediately

Gibberellic acid aqueous solution is easy to decompose and should not be stored for a long time. It should be prepared and used immediately.

4. Avoid heating

Gibberellic acid cannot be heated and will lose its efficacy once the temperature exceeds 60 degrees.

5. Strengthen management

Crops will experience a short-term "loss of green" phenomenon after using gibberellins, so fertilizer and water management should be strengthened after using gibberellins.

In general, gibberellic acid has a wide range of uses and has a significant yield-increasing effect on crops such as rice, cotton, vegetables , melons and fruits. The usage and dosage are different for different types of crops, so just be careful to distinguish them.