How to treat pear rust?

The most effective way to treat pear rust is to completely cut down juniper trees within 5 kilometers of pear orchard. If it is not felled, juniper trees can be sprayed with Baume 3-5 degree sulfur mixture or 40% thiram arsenic solution, and pear trees can be sprayed with 25% triadimefon wettable powder diluted by 65,438+0,000 times, and fallen leaves and dead branches can be burned centrally.

The treatment of pear rust is 1 to remove the host.

How to treat pear rust in breeding process? First of all, it is necessary to clear the host and cut down juniper trees within 5 kilometers of the pear orchard, which is the most effective treatment method for pear rust. For sporadic juniper, it is also necessary to completely cut down and strengthen the management of pear orchards.

2. Transfer to the main engine for spraying.

When Sabina vulgaris is not suitable to be cut down, the host can be sprayed with drugs before the pear tree germinates, that is, when the winter spores are mature. For Sabina vulgaris, spraying drugs to kill spores can control the disease of pear trees, and spraying 3-5 degree sulfur mixture or 40% thiram arsenic solution can control the disease.

3, pear tree spraying

When spraying juniper has no effect, it is necessary to spray chemicals on pear trees to prevent basidiospore infection. The spraying time needs to be 25 days after germination, diluted with 25% triadimefon WP 1000 times or diluted with 65% zineb WP 500 times, once every 10 day, and sprayed continuously for about 3 times.

Step 4 clean the garden thoroughly

After spraying chemicals, the garden needs to be thoroughly cleaned, and the diseased branches, dead fruits and fallen leaves need to be cleaned in time, and they burn together. Pear trees need pruning after falling leaves in autumn, and diseased branches and dead branches need pruning in time to increase the nutritional components of the trees and prevent pests from laying eggs.