Latest Precautions for Spring Orchard Cleaning in Apple Orchards
As spring temperatures rise, the season for all things to revive has arrived again, and spring orchard cleaning in apple orchards can eliminate overwintering sources of pests and diseases, reduce pests and diseases, while also maintaining tree nutrition and promoting flower bud differentiation. However, orchard cleaning also requires attention to method. Below, let's take a look with the editor at the precautions for spring orchard cleaning in apple orchards.
1. Clean the orchard
After winter, the orchard ground is covered with broken branches, fallen leaves, and diseased and pest-damaged fruit, and some pathogens and insect eggs lurk in them. If left to develop, when the suitable period arrives, they will reproduce and develop, causing the plants to become diseased again, with great harm. Therefore, the first step is to clean the orchard, gathering broken branches, fallen leaves, diseased and pest-damaged fruit, discarded fruit bags, and debris, and burning or deeply burying them in a centralized manner. This can not only eliminate hidden pests and diseases but also supplement nutrients for the plants and help the trees recover their vigor.
2. Prune diseased and pest-damaged branches
In addition to cleaning the ground, there are still many diseased and damaged branches on the trees, which will also continue to harm the plants. Therefore, these diseased and pest-damaged branches should be pruned off in time and taken out of the orchard to be burned. This can prevent the recurrence of apple rot disease, dry rot disease, powdery mildew, and anthracnose, and is greatly beneficial for controlling insect pests.
3. Bark scraping
Bark scraping means scraping off diseased bark or necrotic tissue, and at the same time digging out pests in the cracks of the bark. The timing of bark scraping must be well controlled, and it should not be too early or too late; it is best when the sap is flowing. If done too early, the wounds will be difficult to heal, causing the tree to lose more water; if done too late, it will induce rot disease, and by then the pests have already begun to spread. Rot scars must be completely scraped off, and diseased tumors must also be completely scraped off, without leaving any diseased tumor. After bark scraping, attention should be paid to applying a wound healing agent, so as to avoid water loss from the tree, prevent pathogen invasion, and promote wound healing.
4. Spray pesticide for orchard cleaning
After doing the previous work well, the last step is spraying pesticide for orchard cleaning. A total of two sprays are required. The first is to spray lime sulfur mixture once when the flower buds have just sprouted. This is because the main component of lime sulfur mixture is calcium polysulfide, which can kill pests and mites; in addition, lime sulfur mixture is a strongly alkaline agent and can play a sterilizing role; at the same time, it can also form a protective film that can suffocate pests and diseases to death, and has a relatively good control effect in preventing pests and diseases. The second is at the flowering stage, spraying once with 2000 times Lorsban plus 5000 times Fuxing, which can further prevent and control pests and diseases.
The above is an introduction to the precautions for spring orchard cleaning in apple orchards. We hope it can help you. To learn more related knowledge, please stay tuned to us.