Precautions for using plant growth regulators
1. Master the correct use concentration, use method, use site, etc. For example, in the case of gourd, the use of ethephon can promote the early blooming of female flowers on the main vine, but the use period must be 4-6 true leaves, which is easy to use early Drug injury occurs.
2. It is necessary to first test to determine the suitable concentration, and then promote it in a large area. The application effect of plant growth regulators is closely related to the concentration used. If the concentration is too low, the desired effect cannot be produced; if the concentration is too high, it will destroy the normal physiological activities of plants, and even damage plants.
3. Pay attention to the climatic conditions during use: Most of the current methods of use are foliar spraying, and plants can absorb the liquid through the stomata. If the temperature is too low, the leaf surface absorbs slowly; if the temperature is too high, the moisture of the medicinal liquid is easy to evaporate, and it is easy to cause excessive unabsorbed medicinal products to precipitate on the leaf surface, which is harmful to the tissue.
4. The use site and method should be correct: when applying plant growth regulators, the treatment site should be determined according to the application purpose and the principle of efficacy. Such as 2,4-D to prevent falling flowers and fruit, it is necessary to apply the agent on the flowers to inhibit the formation of abscission. If 2,4-D is used to treat young leaves, it will cause damage.
It is undeniable that plant growth regulators have played a good role in regulating vegetable growth, increasing yield and improving quality. Understanding the types and effects of plant growth regulators will help you better use plant growth regulators to solve crop problems.
