Eat more fruits for good health, I believe that everyone usually prefers to eat fruit, not only because of good health, but also because of the delicious fruit. Do you need to use fungicides in the fruit growing process? So how do you know the fungicides? What is the role of fungicides?
Classification and effect of fruit tree fungicides
1. The protective agent is applied to the surface of the plant before the pathogen has reached the host plant or has not invaded the host to prevent the spores from germinating or killing the spores that are germinating, so as to protect the plants from the germs. Such as Bordeaux mixture, Desen zinc, antibacterial, etc., generally non-water-soluble, able to withstand weather and erosion and longer lasting protection.
2. After the eradication of the plant, the surface of the plant is killed on the surface of the plant, but most of the bacteria are still on the surface of the host. For example, the powdery mildew is controlled by sulfur. Scavengers are mostly used during crop dormancy. If the tree is used in winter, the whitening agent or high concentration of stone sulphur is used to kill the overwintering bacteria. Some eradication agents can also be used in agricultural tools and soil disinfection to kill the bacteria, nematodes, such as formalin.
3. The systemic bactericidal agent can penetrate into the inside of the tissue through the plant epidermis, and it can diffuse or produce metabolites along with the transduction in the plant rest to protect the plants from the pathogens or to treat diseases such as wilting and benzene. Teto, Tobuzin, etc. These agents are resistant to rain and are effective against deep pathogens, but are also susceptible to pathogen resistance.
4. Antibiotic fungicides use metabolites of some fungi to kill or inhibit other fungi. Also known as biological agents, such as quercetin, cerulein and so on.
According to the classification of the above fungicides, in the process of fruit tree cultivation and management, we must analyze various diseases on the fruit trees, carefully select various fungicides according to the purpose of prevention and control, time of prevention and treatment, and seasons to achieve fruit tree disease agents. The purpose of prevention and control.
Fruit tree fungicide classification and its role, fruit tree commonly used fungicide
Fruit tree commonly used fungicide
1, fluorosilazole
Fluorosilazole is a triazole fungicide and is widely used to control black spot disease, powdery mildew, leaf spot, rust, anthracnose, black spot, black pox, and blight of various fruit trees and vegetables. , spot blotch, brown spot disease and other diseases. Silazol and prochloraz are new fungicides with fluorine-containing atoms, higher bactericidal activity, unique mechanism of action, and less resistance. With systemic absorption, protection, treatment, eradication.
2, stone sulfur mixture
Stone sulphur mixture is an inorganic sulfur preparation which can sterilize and kill insects and kill cockroaches. It can prevent and cure various diseases and insect pests such as powdery mildew, rust, brown rot, brown spot, black spot and red spider and scale insects. . Protection, prevention and treatment of diseases, moderate toxicity to humans and animals.
3, chlorothalonil
Efficient, broad-spectrum fungicide with protection. It is mainly used for the prevention and control of rust, anthracnose, powdery mildew and downy mildew on fruit trees and vegetables.
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