Control methods of diseases and insect pests of Schisandra chinensis

Schisandra chinensis is alias Xuanji, Wumezi and Shanhua. Because of the changeable taste of different parts of its fruit, it is named Schisandra chinensis. It is a traditional Chinese medicine with high medicinal value and has the effect of strengthening the body. Now there are plants all over the country, and there are often diseases and insect pests that harm its growth, affect yield and income, and make growers have a great headache. Let's take a look at the prevention and control methods of its diseases and insect pests.

1. Yellow leaf disease

Yellow leaf disease mainly harms the leaves of the plant, and it is still new leaves, often new leaves will gradually yellowing soon after growing, until the dead tip after the vine, so that the leaves lose normal photosynthesis, greatly affecting the growth of Schisandra chinensis.

Prevention and treatment: in the occurrence of yellow leaf disease, Huangyeling can be diluted 250 times with water before spraying, once every ten days and a half month, the effect is excellent, and it can also be used with methyl topiramate and mancozeb.

2. Leaf blight

Leaf blight is a very common pathogen in the production of Schisandra chinensis. It is a fungal disease, which usually occurs from May to July. When the disease occurs, the leaf tip or edge begins to wither, and gradually spreads to the whole leaf surface. It is best to cause the whole leaf to wither and fall off, and it will also affect the fruit and cause early fruit drop.

Prevention and control methods: after the biological pesticide Jinggangmycin water agent is diluted with water, it can be sprayed every other week, or methyl topiramate and mancozeb can be used for prevention and control.

3. Powdery mildew

Powdery mildew is also a common disease of Schisandra chinensis, which usually occurs in June and occurs together with black spot, with irregular disease spots in the leaves and small white particles in the later stage of the disease.

Prevention and control methods: stone-sulfur mixture or trimethoprim or methyl topiramate can be used to control the disease. If the disease is more serious, it can be controlled by the mixture of mancozeb and mancozeb, and the concentration can be adjusted according to the plant size and severity of the disease.

4. Leaf curlers

The leaf curl does harm to the larvae, mainly to the leaves and to the fruits. After 3 days of hatching, it will gnaw on the leaves and spin the leaves, resulting in the weakening of the photosynthesis of the leaves, the inability to synthesize nutrients effectively, and the poor growth of the plants. In severe cases, it will also cause early fruit drop and affect the yield.

Control methods: trichlorfon can be used to control leaf curlers before three-day-old larvae, while for three-day-old leaf rollers, dimethoate oil should be used to control them.

The above are Schisandra pest control methods, hope to help you, want to know more related knowledge, please pay attention to us.