MySheen

What medicine is used for pear rust?

Published: 2024-11-08 Author: mysheen
Last Updated: 2024/11/08, Pear rust, also known as red spot disease, is not only a serious impact on the development and growth of pear trees, but also one of the common diseases of pear trees. What kind of medicine should be used if the pear tree has rust? What medicine does pear rust use? You can spray 20% trimethoprim EC 1000 times in the early stage of pear rust to add high-tech.

Pear rust, also known as red spot disease, is not only a serious impact on the development and growth of pear trees, but also one of the common diseases of pear trees. What kind of medicine should be used if the pear tree has rust?

What medicine does pear rust use?

In the initial stage of pear rust, 20% trimethoprim EC can be sprayed 1000 times, and 20% flusilazolide 1000 times, 12.5% uniconazole 3000 times, 10% flusilazole 1200-1500 times can be sprayed to prevent and cure pear rust, pay attention to do not spray during flowering to avoid drug damage.

What is the incidence rule of pear rust?

1. Variety factor

There are great differences in resistance to pear rust among different pear varieties.

two。 Leaf age

The pathogen could not infect the leaves after growing for more than 3 weeks.

3. Alternate host

If there is no alternate host, the pathogen will not be able to complete its life cycle and the disease will not occur. The cultivation area of the transferred host is wide and the quantity is large, which creates conditions for the occurrence of pear rust.

4. Climate

The disease is easy to be prevalent if there is more rainfall and heavy rainfall from the beginning of April to the first and middle of May. The pathogen overwintered with perennial mycelia on the branches and leaves of juniper, and formed basidiospores in the next spring, which spread to pear trees by wind and rain. After germination, they were infected directly from epidermis or stomata.

 
0