Seabuckthorn leaf spot disease prevention and control, what are the seabuckthorn diseases and pests

1. Leaf spot disease prevention and control

Leaf spot is a disease that often occurs in the seedling stage of sea buckthorn. In the early stages of the disease, circular spots will appear on its leaves, which will gradually expand and cause the leaves to dry up and fall off. If you want to prevent and control it, you can mix the fungicide powder with 1000 times water to make a solution, and use it to spray the plants once every 10-15 days. Spraying two or three times in a row will be effective.

2. Common pests and diseases

1. Sea buckthorn wood borer: The larvae of this pest will harm the branches and roots of the plant. They will drill into the trunk to eat, and then slowly move downward, destroying the roots of the plant, causing it to dry up and die. As the most harmful pest, there is currently no good way to prevent and control it. The only thing that can be done is to use black light to lure and kill the adult insects. In addition, the crops should be cut evenly every year during planting to avoid any remaining pests.

2. Red-margined longhorn beetle: This pest is also very harmful. Its larvae will eat branches and trunks, forming tunnels inside the trunks, affecting the looseness of water and nutrients, thus weakening its growth, and in severe cases will cause the tree to wither and die. Generally speaking, red-margined longhorn beetles will only harm older plants with poor growth, as plants with good growth have the ability to protect themselves. If you want to prevent it, you can eliminate the source of insects by pruning.

3. Wilt disease: Wilt disease is a common disease of sea buckthorn. The leaves of diseased seedlings will turn yellow, the stems will dry up, and eventually the entire plant will die. When mature plants become diseased, bumps will appear on the bark, the leaves will fall off, and the branches will die. This disease is usually caused by fungi and too much nitrogen in the soil, so it is necessary to increase the application of phosphorus and potassium fertilizers to inhibit it. In addition, it is necessary to spray with Zineb solution once every 10-15 days, and spray 2-4 times.

4. Rust: Rust mainly harms sea buckthorn seedlings, usually occurring from June to August. Diseased plants will have yellow and dry leaves, the plants will also be stunted, and there will be circular spots on the leaves. This disease is usually prevented. In June, Bordeaux mixture should be sprayed once every 15-20 days. Spraying 2-3 times in a row can reduce the possibility of disease.