Common diseases and insect pests of kiwifruit and their control methods

Kiwifruit is a kind of fruit with fresh and tender texture, sweet and sour taste and unique flavor. It has high nutritional value and is rich in a variety of vitamins, amino acids and trace elements. And many fruit growers will encounter a lot of diseases and insect pests in planting, resulting in poor quality of kiwifruit, good often lead to reduced production, the following pro-agricultural network to bring you common kiwifruit diseases and insect pests and control methods.

1. Root rot

Root rot harms the roots of the plant, so it is generally difficult to detect, but through some external symptoms of the plant, it can be found that the leaves turn yellow or fall off in the early stage of the disease. With the development of the disease, there are yellow-brown disease spots on the epidermis of the trunk, the bark becomes soft and falls off, and the internal tissue decays. Digging up the root position, you will find that the whole root system has rotted and is covered with white hyphae and black mycelium, and it is best for the whole plant to wither and die.

Prevention and control methods: the disease generally begins in April, when there are more Rain Water, the soil is prone to stagnant water, bacteria are easy to invade, cyhalothrin water agent can be used for root irrigation and spraying control, generally occurred in the place of root rot is not suitable for replanting within 2-3 years.

2. Brown spot

Brown spot at first harms the leaves, and then, with the spread of the disease, water-like spots appear on the edge of the leaves, which slowly spread and form large irregular spots. If left unchecked, the whole plant will be infected, causing the plant to wilt and the leaves wither and fall off.

Prevention and treatment: at the initial stage of the disease, the diseased leaves or branches will be cut off in time, and then burned, and then treated with Biai medicine. if the disease is more serious, Xiuku can be used for treatment.

3. Grey mold

Botrytis cinerea mainly occurs in flowering and fruiting stage. after infection, flowers change color and rot and fall off. after infecting fruit, the pilose on the surface of fruit turns brown, which can lead to fruit drop seriously. During the onset of the disease, the pathogen attached to the stamens and petals, and took this as a point, gradually spread, forming disease spots.

Prevention and treatment: grey card can be used to prevent and cure the disease at the initial stage, and the flowers and fruits of the disease can be removed to avoid harming other flowers and fruits. When the disease is serious, Cuirun can be used to treat.

4. Root nematode

Root nematode is as harmful to plant roots as root rot, and it is not easy to detect the disease. When the disease occurs, the root of the plant is swollen and forms root nodules, which hinders the growth of the root system and results in poor growth and dwarfing of the plant.

Control methods: root nematodes like to live in acidic soil, so stone flowers or plant ash can be used to adjust soil acidity to reduce the occurrence of root nematodes, and chemical control can be used. Avermectin can be used to irrigate roots to kill root nematodes.

The above are the common diseases and insect pests and control methods of kiwifruit brought by the pro-agricultural network. I hope it can be helpful to you. For more agricultural knowledge, please pay attention to the pro-agricultural network.