Usage and matters needing attention of paclobutrazol

Paclobutrazol is a growth regulator often used by many farmers in planting and production. For plants, it is mainly used to regulate plant morphological differentiation, promote lateral bud germination and flower bud formation. Because of its remarkable efficacy, it is loved by many growers. So how to use paclobutrazol? What are the points for attention? The following editor brings you the use of paclobutrazol and matters needing attention, let's have a look!

I. method of use

1. The method of drug application

Paclobutrazol is a broad-spectrum growth retarder, which is very beneficial to the growth of most plants. However, the effect is more obvious for rice, rape, soybeans and other cereals. In the application of rice, usually about 200 grams of paclobutrazol and water per mu were applied one month before heading, mainly by spraying. Rape should be sprayed directly when there are 3-4 leaves, which can effectively enhance the cold and drought resistance of the plant. In addition, it can also be used in flower production, and the main application methods are soaking, soil application and leaf blowtorch.

2. Application time

The application time of paclobutrazol mainly depends on the application time. If it is soil application, it should be carried out before the flower buds sprout in spring, and if it is leaf spraying, it should be carried out when the new shoots are about 10-15 cm in the current year. Then we should also pay attention to control the amount of pesticide application according to the variety, growth, tree age and other factors. Usually the amount of soil application is kept at 0.25g/ square meters, and attention should be paid to controlling the concentration when spraying leaves.

3. Times of application

The persistence of paclobutrazol is very long, and its efficacy can be maintained for about 3-5 years after each administration of paclobutrazol. Therefore, we should strictly control the frequency of pesticide application, if it is soil application, then it should be kept at least once every three years, if the frequency of application is too frequent, it will lead to plant damage. And if it is a leaf spray, then it needs to be done once a year. However, if it is used continuously every year, then the concentration of the solution needs to be reduced every year. At the same time, if it is found that the plant growth is very weak, then stop in time, if necessary, then properly spray some gibberellin to promote growth recovery.

II. Points for attention

When using paclobutrazol, you should pay attention to spraying in the evening on a sunny day when there is no rain. Also pay attention to control the amount of medicine, with sufficient water, uniform application, to avoid leakage spray re-spray. For some plants that sow too late or grow poorly, paclobutrazol should not be used excessively. In addition, as just said, we should focus on controlling the amount of paclobutrazol, do not spray too much, to prevent drug damage, but also affect the growth of plants.

The above is a brief introduction to the use of paclobutrazol and matters needing attention. That's all for today's introduction. This article is for reference only. I hope it can help you all.