What are the precautions in the use of plant derived fungicides?

As a broad-spectrum protective agent, fungicides have been widely used in forestry pest control in recent years, especially for seed and soil disinfection. The fungicide has the advantages of quick action and large-scale prevention and control of serious diseases in a short time. However, in use, reasonable dosage and scientific and timely pesticide application methods have always been one of the concerns of forestry technicians.

There are three types of fungicides commonly used in forestry: inorganic fungicides, organic fungicides and agricultural fungicides. Bordeaux mixture and lime-sulphur mixture is an inorganic biocide; There are many types of organic fungicides, such as zinc, carbendazim, thiophanate-methyl, phenylpropionamide, dexamethasone, dexamethasone, pentachloronitrobenzene, formaldehyde, etc.; Agricultural antibiotics have the advantages of high efficiency, no pollution to the environment, and safety for humans and animals. They are mostly systemic, with ** and protective effects.

Commonly used are oxytetracycline, streptomycin, etc. Protective action is to protect the forest from pathogens by applying pesticides when they infect the forest. Many fungicides use this method to control plant diseases.

Fungicides with protective effect are needed to form effective coverage on the surface of forest trees, with strong adhesion and long duration of effect. Bordeaux liquid is an excellent protectant, a sky-blue colloidal suspension. The bactericidal spectrum is broad, and the main component of Bordeaux liquid used for sterilization is basic copper sulfate.

Only by converting insoluble water-soluble basic copper sulfate into soluble copper can it play a bactericidal and antibacterial role. It is more effective to spray the Bordeaux mixture in good weather conditions. <>

Forest disease is the process of forest trees and hormones fighting against each other under the influence of external conditions, resulting in the disease of forest trees. The basic conditions that influence the occurrence of forest diseases are pathogens, susceptible tree species and environmental conditions. When using fungicides to comprehensively manage forests, we must adhere to the principles of safety, economy and effectiveness, and adopt scientific, timely and appropriate dosing methods.

Only by using good drugs and controlling the number of pests and diseases below the economic threshold can we achieve the protection of human and animal health and increase the production effect. <>

Pay attention to protect your eyes, pay attention to your lifestyle, pay attention to the damage to crops, pay attention to the degree of spraying, and pay attention to the way of spraying.

When using, we must pay attention to the reasonable dosage, and choose the right insecticide according to different crops, and then we also need to pay attention to the distance of spraying, and at the same time, we should dilute it with water in advance, and we must do a good job of personal protection, and we must wear protective clothing.

When using, we must pay attention to the selection of quantity, and we should also pay attention to the problem of proportion, and we should also pay attention to avoid direct contact in the process of spraying, otherwise it will be corrosive and harmful, so we should wear protective clothing, and we should avoid rainy weather or windy weather when spraying.

Pay attention to the variety of matching, but also pay attention to the way of application, you can use spray, pay attention to the secondary dilution, but also pay attention to the right medicine, and so on.

1. Prevent the development of antimicrobial resistance. 2. Corresponding countermeasures should be taken according to the law of disease transmission. 3. Symptomatic selection of diseases that need to be prevented and treated by crops.

4. Determine the prevention and control period according to the life cycle and epidemic law of pathogenic bacteria, 5. Do not deliberately pursue efficient, systemic and broad-spectrum fungicides. 6. It is necessary to thoroughly implement the principle of giving priority to prevention, with the emphasis on prevention. 7. The disease prevention effect is not only a problem of the drug itself, but also the quality of the use technology, which also directly affects the correct play of the drug effect.

When using the concentration liquid spray, it is often necessary to prepare or dilute the agent with water to the appropriate concentration, too high concentration will cause pesticide damage and waste, and too low concentration will be ineffective.

I think it should be used according to the dosage on the fungicide instructions, which is the safest.

Summary. The so-called selective herbicides are safe for crops because they can kill weeds within the recommended range of use and dosage, and the vast majority of herbicides fall into this category. Biocidal herbicides are crops and weeds, as long as they are green plants, there are few types of such herbicides, and the most widely used are glyphosate and paraquat.

Generally speaking, there are no herbicides that can kill weeds but are absolutely safe for crops.

Speak. Hello, herbal fungicides are generally not suitable for woody plants.

Herbicides can be divided into two types: selective herbicides and biocidal herbicides.

The so-called selective herbicides are safe for crops because they can kill hail dead weeds within the recommended use method and dosage range, and most herbicides belong to this category. The herbicides are the crops and weeds, as long as the plants are green, the cracker sails can be killed, there are few types of such herbicides, and the most widely used are glyphosate and paraquat. Generally speaking, there are no herbicides that can kill weeds but are absolutely safe for crops.

I'm asking about fungicides, not herbicides.

Germicide? That's fine.

This applies to both.

The composition of plant-based fungicides is similar.

It is whether the fungicide of wheat can be used on trees.

The effect is not the same.

Wheat fungicide.

Let's fight against scab.

I can hit the tree. The effect is the same.

It is the use of gibberella medicine on the tree to prevent and control rot disease.

OK. Hmmm, okay.

Wheat scab medicine is used on the tree.