Two ways to control apple tree rot in early spring: clearing the garden and scraping spots

Every spring, many apple growers will encounter two situations, one is the trunk and main branches of the apple tree, some bark is reddish brown, water stains, slightly raised, round to oblong disease spots, and the bark is soft, easy to tear, hand pressure depression, the flow of yellow-brown juice, with a strong smell of wine.

The other is that it mainly occurs on the branches of 2-5-year-old apple trees, the edge of the spot is clear, neither raised nor waterlogged, the infected branches will dry up quickly, and in the later stage, there are many small black spots on the surface of the spot. Seriously, it will cause the weakness of the tree, the death of the main branch, and even the death of the tree and destruction of the garden.

These conditions are commonly known as rotten skin disease, and the rotten disease of smelly skin disease is causing trouble. therefore, the majority of fruit farmers must take comprehensive measures to prevent and control apple tree rot in early spring.

Apple tree

First, do a good job in clearing the garden in early spring

For orchards that do not clear the orchard before winter, they should promptly clean the fallen leaves, weeds, paper bags, and pick fruit; trim the fruit trees, cut off the branches and tips of diseases and insect pests, scrape off the thick, old and warped skin of the apple trunk, remove the branches and leaves on the branches, and concentrate them out of the orchard to bury or burn them, so as to block the invading door of rot disease.

Second, curettage and treatment of disease spots in time

When the temperature rises in early spring, rot germs begin to breed and spread. Fruit growers should check carefully. If apple trees with rot are found, they should immediately scrape their spots and apply medicine to sterilize them to prevent relapse. When scraping and treating plaque, be sure to scrape off 1 cm of good tissue to make the wound set up stubble, so as to facilitate wound healing. Immediately after scraping, smear Lvbao Dan, Shiduqing, stone sulfur mixture or more than 20% concentrated salt water, but also thoroughly pick up the diseased skin and debris. For the seriously diseased orchards, 45% of the water agent of Nanning can be sprayed before the apple trees germinate.