Plants will produce some hormones to promote their own growth and development during their growth. Of course, if they want to grow better, they need some external hormones. Gibberellin is an indispensable plant growth regulator in plant growth. Gibberellin can swell plants and increase yield. Let's see what gibberellin does.

First, the role of gibberellin:

Gibberellin is a plant hormone, which regulates growth and affects various development processes, including promoting stem elongation, germination, seed dormancy, flowering, gender expression and inhibiting the senescence of leaves and fruits. Gibberellic acid is obtained from the metabolites of Gibberella, which is white and insoluble in water. It can stimulate the growth of some plants and make them bear seedless fruits.

? Gibberellin has different effects on plants, such as potatoes, tomatoes, rice, wheat, cotton, soybeans, tobacco and fruit trees. To promote their growth, germination, flowering and fruiting; It can stimulate fruit growth, improve seed setting rate, and has obvious yield-increasing effect on rice, cotton, vegetables and melons.

Second, the details of gibberellin use:

1. Spraying gibberellin should be carried out in the weather where the daily average temperature is above 23℃, because when the temperature is low, flowers and fruits will not develop and gibberellin will not work.

2. When spraying, the fine mist should be sprayed quickly, and the liquid medicine should be sprayed evenly on the flowers. Excessive concentration will lead to overgrowth, whitening, even death or deformity of plants.

3. It can't be mixed with alkaline substances, but it can be mixed with acidic and neutral fertilizers and pesticides, and the yield increase effect is better when mixed with urea.

4. Gibberellic acid should be used when plants grow healthily and the nutrient supply is sufficient, and it cannot replace fertilizer.