Quanfeng paclobutrazol is a high-quality broad-spectrum plant growth regulator, which has the effects of significantly weakening the apical advantage of plants, regulating morphological differentiation, promoting lateral bud germination, promoting flower bud formation, improving flower setting rate, and enhancing stress resistance. It should master the following technical points when using:

1、 Application method of paclobutrazol

The common methods of using paclobutrazol in flower production include soaking (seed ball), soil application, leaf spraying and drying. Among them, soaking, soil application and leaf spraying have good effects, and the efficacy is durable and stable. There are two methods of soil application. One is to plant leaf-viewing and flowering plants in the ground, dig a circular ditch with a depth of about 5 cm around the tree crown, evenly sprinkle it into the ditch, and then irrigate it in time; Second, for indoor potted flowers, water them in time after drilling holes in the potted soil. Leaf spraying is mostly conducted at the early stage of growth. The spraying time and concentration are different for different flowers, soil quality and nutrition management level. The spraying method is the same as the general fertilizer spraying method, but attention should be paid to the uniform spraying of the growth point.

2、 Dosage and concentration of paclobutrazol

It varies due to variety, growth trend, age, soil quality and other factors. The amount of soil application is generally 0.25g per square meter, the concentration of the solution is 800-1500ppm when the leaves are sprayed, the concentration of the root (seed ball) is 70-90mg/L, and the solution is soaked for 5-8 hours. The application amount and concentration of woody flowers can be slightly higher than that of herbaceous flowers. Use orchids with caution.

3、 Application time

Different application methods have different application time. The soil application of paclobutrazol is generally carried out before the spring flower buds sprout (spring flowers); Leaf spray is generally used when the new shoots grow about 10 to 15 cm in the current year. Deciduous flowers and trees can be used some time in advance to ensure timely effect.

4、 Application times

Because paclobutrazol has a lasting effect, the effect can last for 3 to 5 years if it is applied once, so the application times should be strictly controlled. Soil application shall be conducted at most once every three years, and leaf spray shall be conducted once a year. If it is used for consecutive years, the concentration shall be reduced year by year. If you find that the growth is extremely weak, you should stop using it. If necessary, you can spray gibberellin to help restore growth.

5、 Stagnancy period

Since there is a period of time from the application of paclobutrazol to its efficacy - that is, the efficacy of paclobutrazol is sluggish, so it is very easy to mistake it as "ineffective" in production, and then repeat the application, resulting in excessive dosage. Before application; This factor should be fully considered to avoid losses.