As one of the important methoxy acrylate fungicides, pyraclostrobin has been widely used since its introduction into the market, with a wide spectrum of bacteria, high target bacteria, strong immunity, improved crop stress resistance, promotion of crop growth, anti-aging, etc. The function of this type of fungicide can be verified and approved by most users.

The reason why pyraclostrobin has received industry attention is fundamentally its excellent application performance. But the best medicine, if it doesn't work, it is a waste!

Today, I have sorted out the use of pyraclostrobin:

1. Which is better for pyraclostrobin, emulsifiable concentrate, suspending agent and powder?

In general, each has its own differences.

(1) powder

It will be dispersed during processing and use, which will cause environmental pollution, which is a common problem of powder.

(2) emulsifiable concentrate

Originally used toluene, xylene, but generally do not advocate the registration of emulsifiable oil, began to use microemulsion, water emulsion, or replace with vegetable oil, is a relatively backward dosage form, but some products must be made into emulsifiable concentrate.

(3) Suspending agent

The suspending agent is more advanced, the process is stricter, the processing cost is high, but the state is not stable, and stratification may occur in a long time.

2. What is the relationship between pyraclostrobin, azoxystrobin and ether oxystrobin?

Ethoxystrobin, azoxystrobin, pyraclostrobin is called the three brothers in the fungicide, they are all methoxy acrylates, methoxy acrylate fungicides are natural methoxy acrylates Antibiotics are a new class of fungicides developed for lead compounds.

There are many common features in agricultural applications:

(1) Unique mechanism of action. They are mitochondrial respiratory inhibitors of pathogenic fungi and are effective against strains that have developed resistance to sterol inhibitors such as triazoles, phenylamides, dicarboxamides, benzimidazoles.

(2) A broad spectrum of sterilization. It shows excellent activity against almost all fungi (Ascomycetes, Basidiomycetes, Oomycetes and Deuteromycetes), such as powdery mildew, leaf blight, red spot, and net blotchosis in wheat. , black shank, rice blast, sheath blight, as well as downy mildew, blight and other activities have a very good activity, the prevention and control of disease is even more important.

(3) It has protective and therapeutic effects and has good osmotic effect. It can be used in the methods of stem and leaf spray, water surface application and seed treatment.

(4) It is highly selective. It is safe for crops, people, animals and beneficial organisms, and has no pollution to the environment.

the difference:

(1) Azoxystrobin has a broad spectrum of bactericidal activity and is effective against most pathogenic bacteria in ascomycetes, basidiomycetes, deuteromycetes and oomycetes.

(2) The bactericidal spectrum of the oxystrobin is not as broad as that of azoxystrobin, but has special effects on powdery mildew.

(3) Pyraclostrobin has the strongest antibacterial activity, and has strong ability to inhibit the spore germination of pathogens, and has significant antibacterial activity against plant pathogens such as ascomycetes, basidiomycetes, deuteroms and oomycetes. It has potential therapeutic activity and can be used to control a variety of crop fungal diseases. Pyraclostrobin has strong conductive activity in plants, which can improve crop physiology and enhance crop stress resistance.

All three compounds have the function of protection, treatment and eradication. The difference is that the ethereal ester is less mobile than the other two, the pyraclostrobin is higher than the first two, and the azoxystrobin is more permeable.

3, pyraclostrobin all cure rickets?

Pyraclostrobin can be used in various crops such as wheat, peanuts, rice, vegetables, fruit trees, tobacco, tea trees, ornamental plants, and lawns.

Control various diseases such as leaf blight, rust, powdery mildew, downy mildew, blight, anthracnose, scab, brown spot, and blight caused by ascomycetes, basidiomycetes, deuteromycetes and oomycetes.

Good for cucumber powdery mildew, downy mildew, banana scab, leaf spot, grape downy mildew, anthracnose, powdery mildew, early blight of tomato and potato, late blight, powdery mildew and leaf blight Control effect.

Usage and dosage of pyraclostrobin on various crops (pyrazole ester 20% wettable powder as an example)

4. How much water is added?

(1) How many pounds of water does 100g take? You can hit 300 pounds of water.

(2) Can a bucket of water be used for 20 grams? If it is used in wheat, rice, etc., it is generally no problem, but it can be used on sensitive crops, such as strawberries, so it may cause phytotoxicity. Water 10g ~ 15g is a safer dosage.

5, cereal crops

Pyraclostrobin has a broad spectrum of bactericidal activity against cereal crop diseases.

(1) It has outstanding control effects on the diseases of the leaves and ears of cereals, and the effect of increasing yield is remarkable. The single-agent therapeutic test can effectively control wheat leaf blight, and the simultaneous treatment of wheat blight can also be observed.

Even in the case of severe disease, pyraclostrobin can effectively prevent leaf rust and stripe rust from harming barley and wheat, and can also cure leaf blight and reticulosis of barley. Pyraclostrobin can also be effective. Control other cereal diseases such as wheat leaf blight, snow rot and white spot and barley moire.

(2) Make a package on the wheat, a small amount of 10g is not small? If it is a compound, it is not small, it is a little small when used alone. If you use it for the first time, you can use 10-20 grams of an acre. If you use it for the second time, it is recommended to add something.

6, bean crops

(1) Pyraclostrobin has a good control effect on the main diseases of beans such as bean leaf spot, rust and anthracnose.

(2) Pyraclostrobin can effectively control peanut brown spot, black spot, snake eye disease, rust and scab. In addition, it has a good control effect on peanut white diarrhea.

7, the use and dosage of grapes

(1) How to use it? For example, to prevent and treat downy mildew, powdery mildew, gray mold, brown spot, brown sugar, etc., you can add pyraclostrobin to the first leaf of the grape. Used alone, prevention and leaves will turn green.

(2) How much is the amount of grapes? 30 kg of water on the grapes is normally used alone, 10 g to 15 g; if it is compounded, 10 g of water is used; 100 g of pyrazole is used, 300 kg of water is used for watering. If you mix it, see what disease you are fighting, such as: grape downy mildew, you can use it with acesulfame or enoylmorpholine.

Pyraclostrobin has good control effects on tomato and potato diseases such as early blight, late blight, powdery mildew and leaf blight.

8. How to use citrus?

It is used before the high-risk period of the disease, for example, it has a good preventive effect on common anthracnose, sand skin and scab.

The results show that pyraclostrobin has a good control effect on citrus scab, resin disease and black rot. It can also improve the quality of citrus if it is used interchangeably with other chemicals.

9. How to use pyraclostrobin suspension in pear trees?

One mu of land can be used 20~30g, evenly sprayed with water 60 kg to prevent pear tree scab, and it can also be compounded with fungicide such as difenoconazole.

10. How is Apple used?

Mainly control fungal diseases, such as powdery mildew, early defoliation, leaf spot and so on. However, it should be noted that it is sensitive to some varieties of Gala.

11. What is the amount of mango in Hainan?

Basically 10g / pot, if it is a combination of a pot of 30 kg of water 10g is enough, you can use 10-15g per pot of water.

12, how to use on red dates?

On the red jujube to prevent flowering coal pollution, late anthrax, the first time 2000 times singles, the second time with tebuconazole or difenoconazole (coal contamination plus mites).

13, how to use strawberries?

What should I pay attention to when pyraclostrobin is used in strawberry protection? What diseases are mainly prevented? Does the strawberry flowering period have a long effect on flowers and bees?

A broad-spectrum fungicide, mainly for prevention, mainly for preventing white powder, downy mildew, leaf spots, etc. In the early stage, it is prevented by pyrazole when there is no disease, and it can be used when it is used later. For example, downy mildew can be combined with dimethomorph, carbendazim or the like.

Experiments have shown that bees are safe for flowering bees below 25 ml of a pot of water, but care should be taken to avoid application at high temperatures and low temperatures. Otherwise, there is a phytotoxicity that cannot be mixed with copper preparations.

14. What kind of condition can pyrazoloside be able to control against chives?

Pyraclostrobin has a good preventive effect on fungal diseases such as powdery mildew.

15, how to use watermelon?

It can be used in the early stage to prevent the persimmon, the anthracnose and the blight in the middle and late stages. According to your local situation, you can use it once or twice in the early prevention. When the treatment is later, you can replenish it to treat downy mildew. , disease, etc.

16, how to use cucumber?

It is very effective on cucumber, preventing downy mildew, powdery mildew, anthracnose, spotted diseases, increasing chlorophyll content, increasing photosynthesis, reducing plant respiration and improving crop stress resistance.

Note: When to use

(1) The timing of the use of this type of fungicide is generally advanced, to prevent disease as a protective agent, or to take advantage of the drug at the beginning of the disease, such as before sowing, after emergence, or when planting.

(2) Pyraclostrobin is known for its efficacy and long-lasting effect, and it is still slightly insufficient compared with other targeted fungicides. It is recommended to use it with other fungicides or with a compounding agent.

(3) The action site of pyraclostrobin is relatively simple, so the resistance starts relatively fast. It is generally necessary to control the number of uses during use to avoid accelerated resistance.

(4) The strong permeability makes pyraclostrobin excellent in affinity with the surface of the leaf, greatly improving the prevention effect and the duration of effect, but pay attention to the occurrence of phytotoxicity. Especially in the crop seedling nursery period, the crop growth is strong and the high temperature and high humidity conditions, the use concentration of pyraclostrobin will have a certain risk of phytotoxicity.

(5) It can't be used in the color change period of the crop. For example, mango and tomato are used in the early stage, and the color change is not good after the later use.

Compounding problem

17. I would like to ask if pyraclostrobin is mixed with other medicines. Anything to pay attention to?

Be careful not to mix with alkaline bactericides or silicone. Mix the concentration with other chemicals and do the test.

18, what should be paid attention to the use of pyrazole and foliar fertilizer? And alginic acid?

First: dissolve the foliar fertilizer first, then pour the pyrazole, and then pour the other things.

19, pyraclostrobin + Xinxi + potassium dihydrogen phosphate + slightly better, can be mixed with the production increase package on the market?

To see what specific package, in general, pyraclostrobin plus Xinxi plus potassium dihydrogen phosphate, plus trace elements, the effect will be very good.

20. In order to improve the efficacy, can I add silicone in pyraclostrobin?

Pyraclostrobin itself has a high penetration and it is not recommended to add silicone.

21. Can pyraclostrobin be mixed with brassinomycin?

They can be mixed, but it is best to mix them separately after two dilutions.

22. Can pyraclostrobin be used together with peracetic acid?

Oxidizing pesticides such as potassium permanganate, hydrogen peroxide, peracetic acid, and chlorobromide are not recommended for mixing.

23, pyraclostrobin and triazole fungicides are used together, can the efficacy be improved?

The compound triazole fungicide has a good effect and improves the drug effect. The endogenous conductivity of pyraclostrobin is not strong, but has good permeability.

24, Feifei fight drugs team 30 pounds of water to play 3 acres of land, 20% pyraclostrobin this powder can not be used?

It can be used as a high-efficiency plant protection device, which can be used under normal conditions, but there may be a small problem when mixing other products. When using, pay attention to the mixing sequence and the agent. Do not mix with the copper preparation and the strong oxidizing product. If necessary, do an experiment. If it is sprayed separately, there is no problem.

Other problems such as phytotoxicity

25. Will the powder be easily phytotoxic?

Pyrazole powders generally do not cause phytotoxicity. I would like to tell you how the phytotoxicity is caused. If you have used sensitizer MnZn powder, you should know that this is relatively easy to cause phytotoxicity. Many companies like to use the big bag in order to pursue cheaper. In the use of fruit trees, zinc-manganese-zinc must be in a complex state. If it is not complex, it is easy to release this manganese ion prematurely, and then the powder can not meet the requirements, it is easy to cause phytotoxicity.

Our pyraclostrobin will generally not cause phytotoxicity at reasonable dilution ratios. However, if there is a precedent for the phytotoxicity of pyraclostrobin in the local area, it is recommended to experiment first.

26, and 920 gibberellin mixed will produce phytotoxicity?

Under normal circumstances, there will be no phytotoxicity unless you look at what crop you are on, for example:

On the grapes, mixed with 920 gibberellin may cause phytotoxicity, not because of pyrazole, but because the powder will adsorb the surrounding drugs, causing local concentrations to become medicinal, but this need The actual operation, most of which is caused by the increase in the amount of consumption.

27. If you are a health supplement, can you use it multiple times?

Can not be used multiple times, although there is a health effect, but the use of more times will still produce resistance.

28, how to do, pyraclostrobin can maintain vitality

First of all, you must have a correct understanding of pyraclostrobin. It is a good ingredient, but it is by no means a panacea. It is a good product to put the products in the right place.

As a fungicide, intensive protective agents and immune agents are far more important than intensive therapeutics.

As a function of promoting growth, it is important to strengthen the fruit expansion during the young fruit period than to strengthen the fast fruit expansion period.

As a function of increasing yield and income in field crops, it is important to strengthen the effective ear (pod) ratio and increase the number of kernels.

As a stress-resistant function, strengthening prevention is more important than remediation.

As a crop health function, synergistic use with fertilizer is especially important.

As a methoxy acrylate fungicide, it is better to use less and never use it.

As a promoter, you need to return to the crop and position the market segment.

For example, a single dose of pyrazole can be positioned to improve the quality of fruits and vegetables; and the combination of triazole compounds can be located in the therapeutic treatment of the disease; compounding with protective compounds can be used as a protective agent to promote more, etc. Accurate use, the greater value of pyraclostrobin.

This article URL: pyraclostrobin user manual detailed analysis of 30 hot issues

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