What are the effects of applying fungicides? Understanding the main functions of fungicides in one article
What are the effects of applying fungicides? What are the differences? We ask knowledgeable readers to help explain. The effects of applying fungicides can be classified according to the effect of the agent on disease control, and are broadly divided into three categories: protective, eradicant, and curative. Zhongdiwang has compiled the effects of the above three categories of fungicides, listed below for...
What are the effects of applying fungicides? What are the differences? We ask knowledgeable readers to help explainThe effects of applying fungicides can be classified according to the effect of the agent on disease control, and are broadly divided into three categories: protective, eradicant, and curative. Zhongdiwang has compiled the effects of the above three categories of fungicides, listed below for readers' reference.
1. Effects of protective fungicides:
This type of fungicide can protect parts not yet infected by pathogens from infection. It must be sprayed before the crop comes into contact with the pathogen or before disease occurs to be effective, such as copper preparations (Bordeaux mixture), sulfur preparations (lime sulfur mixture), etc.
2. Effects of eradicant fungicides:
This type of agent can directly kill pathogens before they invade and treat application sites that have already been infected. It is often used for disinfection and is rarely applied directly to plants. For example, formalin is used to disinfect infected seeds, potassium permanganate, etc. Triadimefon also has an eradicant effect on wheat stripe rust and powdery mildew when used properly.
3. Effects of curative fungicides:
Also called systemic fungicides. After being absorbed and translocated by the plant, this type of fungicide can prevent the development and spread of pathogens in various parts of the plant. Such as carbendazim, thiophanate-methyl, kasugamycin, etc.
Precautions for using fungicides:
When applying fungicides, the right remedy must be chosen for the disease. When selecting an agent, first diagnose the crop disease and know what the main disease is. Only in this way can the right remedy be chosen. Because different categories of fungicides have different properties, characteristics, and pharmacological effects, their control effects on various diseases differ. Not all fungicides have a control effect on every disease, and they are not a "cure-all".
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