Broad spectrum bactericidal microbial fungicide pyraclostrobin
What is pyraclostrobin (175013-18-0)?
Microbial fungicide pyraclostrobin CAS: 175013-18-0, is a methoxyacrylate broad-spectrum fungicide, mainly used to control various diseases caused by fungi on crops.
Microbial fungicide pyraclostrobin, the chemical name is N-[2-[[1-(4-chlorophenyl)pyrazol-3-yl]oxymethyl]phenyl]-N-methoxycarbamate Methyl ester, the chemical formula is C19H18ClN3O4. Pyraclostrobin is a methoxyacrylate fungicide, which inhibits mitochondrial respiration, eventually leading to cell death, and has the functions of protection, treatment, and leaf penetration. It is mainly used to control various diseases caused by fungi on crops, and pyraclostrobin has good control effects on wheat powdery mildew and head blight. In addition to the direct effect on pathogenic bacteria, pyraclostrobin can also induce the physiological phenomena of many crops, especially grains, such as increasing the absorption of nitrogen, thereby promoting the rapid growth of crops and increasing crop yield, so as to achieve the purpose of high yield of crops.
Its mechanism of action is to inhibit the respiration of mitochondria by preventing electron transfer in the process of cytochrome synthesis, which eventually leads to cell death.
The physical and chemical properties of pyraclostrobin (175013-18-0)
Appearance: The pure product of pyraclostrobin is white to light beige odorless crystals.
Melting point 63.7~65.2℃
Vapor pressure (20- 25°C): 2.6×10-8Pa
Solubility (20°C, g/100mL): water (distilled water) 0.00019, n-heptane 0.37, methanol 10, acetonitrile ≥ 50, toluene, dichloromethane ≥ 57, acetone, ethyl acetate ≥ 65. n-octanol 2.4, DMF; 43; n-octanol/water partition coefficient: logPow4.18 (pH6.5)
Original drug content: 95%
The effective content of the preparation is 250g/L (23.6%WAV). Appearance is dark yellow. liquid with naphthalene odor
Stability: The photolysis half-life of the pure product in aqueous solution is 0.06d (1.44h); the preparation is stored at room temperature: stable for 2 years at 20 degrees Celsius
Chemical name: methyl N-f2-[1-(4-chlorobenzene)-1H-pyrazol-3-yloxymethyl]phenyl-N-methoxycarbamate
Mechanism of action of pyraclostrobin (175013-18-0)
The microbial fungicide pyraclostrobin is a mitochondrial respiration inhibitor, which inhibits mitochondrial respiration by preventing electron transfer between cytochrome b and C1, so that mitochondria cannot produce and provide energy (ATP) required for normal cell metabolism, eventually leads to cell death.
The microbial fungicide pyraclostrobin has a strong ability to inhibit the germination of pathogenic spores, and has significant antibacterial activity against almost all fungi (Ascomycetes, Basidiomycetes, Oomycetes and Deuteromycetes) plant pathogenic bacteria, and It has protective and therapeutic effects, and has good penetration and systemic effects. It can be used in stem and leaf spray, water surface application, and seed treatment. Also highly selective. It is safe for crops, people, animals and beneficial organisms, and basically has no pollution to the environment. Finally, its conduction activity in plants is strong, which can improve crop physiological functions and enhance crop stress resistance.
Pyraclostrobin (175013-18-0) mode of action
The microbial fungicide pyraclostrobin exerts its medicinal effect by inhibiting spore germination and mycelium growth, and has the functions of protection, treatment, eradication, penetration, strong systemic absorption and resistance to rain erosion.
The microbial fungicide pyraclostrobin can be quickly absorbed by crops, and is mainly retained by the waxy layer of leaves, and can also be transmitted to the back of leaves through leaf osmosis, thereby preventing and controlling diseases on both sides of leaves. Pyraclostrobin has little transport and fumigation effects on the top and base of leaves, but has strong conduction activity in plants.
Toxicity of pyraclostrobin (175013-18-0)
Acute oral LD5 000mg/kg of microbial fungicide pyraclostrobin original drug in rats. Acute percutaneous LD2 000mg/kg. Acute inhalation of LCso (4h) 0.3lmg/L; no irritation to rabbit eyes and skin: skin sensitization test on guinea pigs showed no sensitization: subchronic feeding test on rats for 3 months Maximum ineffective dose: male rats It was 9.2mg/kg/d, and that of female rats was 12.9mg/kg/d; three mutagenic tests: Ames test, mouse bone marrow cell micronucleus test, and germ cell chromosomal aberration test were all negative. No mutagenic effect: no teratogenicity in rat teratogenicity test: 2-year chronic feeding test on rats The maximum ineffective dose: 3.4mg/kg/d for male rats, 4.6mg/kg/d for female rats kg/d; Carcinogenicity tests in rats and mice showed no carcinogenicity. Acute oral LD of 25% pyraclostrobin EC in rats: 500mg/kg for males. Female is 260mg/kg. Acute percutaneous LD4000mg/kg, acute inhalation LC503.51mg/kg; irritating to rabbit eyes and skin: skin sensitization test on guinea pigs showed no sensitization. Both pyraclostrobin technical and 25% emulsifiable concentrate were moderately toxic. The toxicity is slightly higher than that of the domestic synthetic preparation 38% oxazifastrobin.
Safety of pyraclostrobin (175013-18-0)
Pyraclostrobin EC for fish LCso (96h): rainbow trout 0.01mg/L, bluegill sunfish 0.031 6mg, L, carp 0.031 6mg/L; Daphnia LCso (48h) 15.71zg/ L; North American quail LD2 000mg/kg, wild duck LD5 000mg/kg: bee LDso (48h): oral 73.105txg/bee, contact 1001xg/bee; earthworm LCso565.9mg/kg dry soil. The preparation is highly toxic to fish. Low toxicity to birds, bees and earthworms. Indicate on the product label that the medical device must not be washed in ponds and other water sources and water bodies. The pesticide residue shall not be poured into water sources and water bodies.
Application of pyraclostrobin (175013-18-0)
Microbial fungicide pyraclostrobin is a new broad-spectrum fungicide
The mechanism of action of the microbial fungicide pyraclostrobin: it is an inhibitor of mitochondrial respiration. That is, by preventing electron transfer during cytochrome synthesis. It has the functions of protection, treatment and leaf penetration. The results of field efficacy tests of pyraclostrobin EC show that it has good control effects on cucumber powdery mildew, downy mildew, banana scab, leaf spot, and sclerotinia. The dosage for controlling cucumber powdery mildew and downy mildew is 75-150g/hm2 of active ingredients (20-40mL/667m2 for commercial products converted into EC). Dilute with water and spray evenly in the early stage of the disease. General spraying 3 to 4 times. Spray once every 7 days. The concentration of active ingredients to prevent and control banana scab and leaf spot is 83.3-250mg/kg (1000-3000 times the dilution factor), and start spraying at the early stage of the disease. Generally, the medicine is sprayed 3 times, and the medicine is sprayed once every 10 days. The frequency of spraying depends on the condition. It is safe for cucumbers and bananas, and no phytotoxicity has been seen.
Features of pyraclostrobin (175013-18-0)
Microbial fungicide pyraclostrobin belongs to methoxy carbamate, inhibits mitochondrial respiration by preventing electron transfer between cytochrome b and C1 in pathogen cells, and has protective, therapeutic and leaf osmotic conduction functions.
The microbial fungicide pyraclostrobin has the functions of broad bactericidal spectrum, multiple target bacteria, strong immunity, improving crop stress resistance, promoting crop growth, and anti-aging.
1. Unique mechanism of action
Microbial fungicide pyraclostrobin is a mitochondrial respiration inhibitor. After contacting with germs, it inhibits the electron transfer between cytochrome b and c1 to inhibit the mitochondrial respiration of germs, thereby preventing the synthesis of cellular energy ATP and inhibiting the growth of germs.
It mainly acts on the germination process of pathogenic spores, and can also inhibit the growth of pathogenic hyphae.
The microbial fungicide pyraclostrobin has no cross-resistance with triazoles, benzamides, dicarboxamides and benzimidazole fungicides, but it has cross-resistance with azoxystrobin and kresoxim- These two agents are used alternately.
2. Diversified modes of action
Microbial fungicide pyraclostrobin has protective and therapeutic effects, and has good penetration and systemic effects, and can be used in stem and leaf spray, seed treatment, etc.
3. Broad bactericidal spectrum
The microbial fungicide pyraclostrobin has a broad bactericidal spectrum and shows good activity against almost all fungal diseases (Ascomycetes, Basidiomycetes, Oomycetes and Deuteromycetes), such as wheat powdery mildew , leaf blight, spot disease, black blight, rice blast, sheath blight, and grape downy mildew on fruits and vegetables, pepper blight, banana scab, cucumber powdery mildew, cucumber downy mildew, Banana leaf spot, apple brown spot, etc. have very good activity.
4. Good mixability
The microbial fungicide pyraclostrobin can be used in combination with various fungicides such as difenoconazole, dicyanoanthraquinone, disenlian, flusilazole, and dimethomorph.
Advantages of pyraclostrobin (175013-18-0)
1. Bactericidal broad spectrum
The microbial fungicide pyraclostrobin shows good activity against almost all fungal diseases, such as wheat powdery mildew, leaf blight, red spot, net spot, scab, rice blast, Sheath blight, downy mildew, blight, etc. have very good activity, and are more important for the prevention and control of blight.
2. Combination of prevention and treatment
Microbial fungicide pyraclostrobin has protective and therapeutic effects, and has good penetration and systemic effects. It can be used in stem and leaf spray, water surface application, and seed treatment.
3. Good mixability
The microbial fungicide pyraclostrobin is compounded with a variety of agents, and the effect of compounding with difenoconazole, disenlian, dimetholine, etc. is good, and it also has a synergistic effect.
4. Plant health care, stress resistance and yield increase
Microbial fungicide pyraclostrobin increases the activity of nitrate (nitrification) reductase, thereby increasing the absorption of nitrogen during the rapid growth stage of crops. At the same time, it can reduce the biosynthesis of ethylene, thereby delaying the senescence of crops.
5. Highly selective
The microbial fungicide pyraclostrobin is safe for crops, humans, animals and beneficial organisms, and basically has no pollution to the environment.
Control objects and characteristics of pyraclostrobin (175013-18-0)
1. Broad-spectrum sterilization: broad-spectrum pyraclostrobin can be used for wheat, peanuts, rice, vegetables, fruit trees, tobacco, tea trees, ornamental plants, lawns and other crops. Control various diseases such as leaf blight, rust, powdery mildew, downy mildew, blight, anthracnose, scab, brown spot, blight and other diseases caused by ascomycetes, basidiomycetes, deuteromycetes and oomycetes. It has good effects on cucumber powdery mildew, downy mildew, banana scab, leaf spot, grape downy mildew, anthracnose, powdery mildew, early blight, late blight, powdery mildew and leaf blight of tomato and potato. Control effect.
2. Combination of prevention and treatment: It has protective and therapeutic effects, and has good penetration and systemic effects. It can be used in stem and leaf spray, water surface application, and seed treatment.
3. Plant health care: In addition to the direct effect on pathogenic bacteria, pyraclostrobin can induce physiological changes in many crops, especially grains. For example, it can enhance the activity of nitrate (nitrifying) reductase, thereby improving crop production. Nitrogen uptake during the rapid growth phase. At the same time, it can reduce the biosynthesis of ethylene, thereby delaying the senescence of crops. When crops are attacked by viruses, it can accelerate the formation of resistance proteins, which is the same as the synthesis of anti-reverse proteins by the crop's own salicylic acid synthesis. Even in the absence of disease in plants, pyraclostrobin can increase crop yield by controlling secondary disease and reducing stress from abiotic factors.
Application technology of pyraclostrobin (175013-18-0)
Microbial fungicide pyraclostrobin is a new broad-spectrum fungicide.
1. To control grape powdery mildew, downy mildew, black rot, brown blight, branch blight, etc., use 100 g/hm2, spray 5-7 times, and the interval between spraying is 12-14 days.
2. To prevent loquat angular spot disease, spray 1000-3000 times liquid of 25% EC, spray once every 10-15 days, and spray 2-3 times continuously.
3. To prevent and control citrus scab, resinous disease, black rot, etc., 50 g/hm2 can be applied 2-3 times, and the interval between applications is 34-58 days, which has a good control effect. If used alternately with other agents, it can also improve the quality of citrus.
4. To prevent and control lawn brown spot, tea tree anthracnose, and du fruit tree anthracnose, 25% EC can be sprayed at 125-250 mg/kg. To prevent and control lawn diseases such as blight, blight, downy mildew, snow rot, etc., 250-560 g/hm2 can be used, spraying 3-5 times with an interval of 14 days.
5. Prevention and treatment of Cymbidium, Phalaenopsis, pineapple and other diseases, carnation, Cymbidium, Phalaenopsis and other root rot, crabapple, Chlorophytum, pineapple and other anthracnose, leaf spot, rose, carnation and other rust, rose, For lilies, tulips, carnations and other wilts, use a concentration of 1500-3000 times, that is, add 10-20ml of 25% Kairun EC to each backpack manual sprayer water, and spray evenly and meticulously.
6. Grape black pox, powdery mildew, and anthracnose are most likely to spread under high temperature and high humidity conditions. The method of combining prevention and treatment should be adopted, that is, spray once before the onset, and keep an interval of 7-10 days. As the disease develops, spray 2-3 times again according to the weather conditions, which can effectively prevent the occurrence of various grape diseases. Use a concentration of 1500-3000 times, that is, add 10-20ml of 25% Kairun emulsifiable oil to each backpack manual sprayer water, and spray evenly and meticulously.
7. To prevent and control various lawn diseases such as Pythium blight, summer leaf spot, coin spot, sickle wilt, powdery mildew, etc., the use concentration is 1500-3000 times, that is, add 10-20 ml of water to each backpack manual sprayer 25% Kairun cream.
8. It has an impact on silkworms, and it should be strictly prevented from drifting when used in areas with mulberry fields nearby. When used on pear trees, avoid application as far as possible to prevent phytotoxicity during the initial flowering period and about 20 days after falling. the
What should be paid attention to when using pyraclostrobin (175013-18-0)
1. The microbial fungicide pyraclostrobin must be used in advance, and it should be used as a protective agent to prevent diseases, or it can be used at the early stage of disease occurrence before sowing, after emergence or when planting to give full play to the advantages of the agent.
2. Microbial fungicide pyraclostrobin is known for its preventive effect and long-lasting effect. Compared with other targeted fungicides, the quick-acting fungicide is still slightly insufficient. It is best to use it in conjunction with other fungicides or compound agents.
3. The microbial fungicide pyraclostrobin has a relatively single action site, so the resistance develops relatively quickly. Be sure to control the number of uses when using it, so as not to accelerate the generation of resistance.
4. The strong permeability allows pyraclostrobin to be well compatible with the surface of leaves, greatly improving the preventive effect and duration, but attention should be paid to the occurrence of phytotoxicity. Especially in the nursery stage of crop seedlings, where the crops grow vigorously and the conditions are high temperature and high humidity, there is a certain risk of phytotoxicity when the concentration of pyraclostrobin is too high.
Compound of pyraclostrobin (175013-18-0)
1: 60% pyraclostrobin·Dysenlian water dispersible granules (5% pyraclostrobin + 55% dysenlian), this formula has multiple functions of prevention, treatment and protection, wide range of disease prevention and safe to use. Mainly used to control: downy mildew, blight, anthracnose of cucumber, downy mildew, blight rot, anthracnose of melon, anthracnose, blight rot of watermelon, late blight of tomato, blight of pepper, downy mildew, Anthracnose, downy mildew of cruciferous vegetables, late blight of potatoes, leaf spot of vegetable peanuts, etc. Generally, 50-80 grams of 60% water-dispersible granules are used per mu, and sprayed on 45-75 kg of water, which can quickly control the damage and spread of diseases.
Two: 40% pyraclostrobin · tebuconazole suspension concentrate (10% pyraclostrobin + 30% tebuconazole), this formula has the functions of protection, treatment and eradication. Strong adhesion, long duration, and resistance to rain erosion. The mechanism of action of the two is different. After mixing, they can effectively prevent leaf spot, anthracnose, ring spot, rust, anthracnose leaf blight, brown spot, rice blast, sheath blight, leaf spot, powdery mildew, scab , Scab, Blight, Banana Black Star, Leaf Spot and other diseases. Use 8-10 ml of 40% triazole ether tebuconazole suspending agent per mu, or make 3000 times liquid for fruit trees, mix with 30 kg of water and spray evenly, which can quickly control the damage of the above diseases.
Three: 30% benzopyrazole ester suspension concentrate (20% difenoconazole + 10% pyraclostrobin), this formula has the functions of protection, treatment and leaf penetration. Good quick-acting and long-lasting effect. It can fully replace conventional products such as mancozeb, chlorothalonil, mancozeb mancozeb, and mancozeb cream urea. It can effectively control early blight, anthracnose, powdery mildew, downy mildew, blight, blight, sclerotinia, scab, gummosis, scab, brown spot, leaf spot, stem blight and other diseases. Use 20-30 ml of 30% benzyl pyrazole ester suspending agent per mu, mix with 30-50 kg of water and spray evenly, which can quickly prevent and control the spread of the above diseases.
Pyraclostrobin (175013-18-0) compound medicine according to the purpose of use
1. Seed treatment when killing insects and fungi
Azole ether · wilt · thiamethoxam, pyrazole · thiazole · thiazox, pyrazolate · fine armor cream · emamectin, pyrazolate · fludioxonil · thiamethoxam, pyraclostrobin · clothianidin, pyraclostrobin Azolate, thiamethoxam, Zhongshengsu, etc.
2. When seed treatment expands the sterilization spectrum
Pyrazolone Mebendazim, Benzoate Pyrazolate, Pyrazolate Methiazolin Thifur, Pyrazolone Methiafur, Pyrazolate Oligosaccharin Thifur, Pyrazolate Fludioxonil · Nail cream, fenazole ether, fenazole, etc.
3. Enhance the control effect on oomycete diseases
Pyrazole · thiram, pyrazole ether · cyazofamid, pyrazole ether · fine nail cream, polyclonal pyrazole ester, enoyl pyrazole ester, pyrazole ether · cymoxanil, oxone · pyrazole ester, etc.
4. Enhance the control effect on higher fungal diseases
Pyridoxazole pyrazolate, pyrazole ether prochloraz, pyrazole ether flunamide, pyrazole iprodione, pyrazole ether rice blastin, thifur pyrazole ester, pyrazole ether pyrimethrimol, biguanide Pyrazolate, etc.;
1. When preventing bacterial diseases
Azole ether · quinoline copper, azole ether · nonylcopper, pine copper · pyrazole ester, azole ether · thiazole zinc, oligosaccharide · pyrazole ester, etc.;
2. When delaying drug resistance
Azole ether Flusilazole, Benzoate Pyrazolate, Azole ether Tebuconazole, Azole ether Prothiazole, Azole ether Flueconazole, Azole ether Hexaconazole, Tetrafluoropyrazolate, Azole ether Ether Fenazole, Fenazole Ether Propiconazole, etc.;
3. When enhancing the bactericidal effect
Azole ether methionine, azole ether methionine, azole ether carbendazim, azole ether ketamide, azole ether captan, dicyanide pyrazole ester, etc.;
4. When enhancing the protective effect of the drug
Azole ether-Dysenlian, Azole ether-Bimson zinc
The best bactericidal formula of pyraclostrobin (175013-18-0)
1. Pyraclostrobin + Difenoconazole
The microbial fungicide pyraclostrobin is an inhibitor of mitochondrial respiration, inhibits the biosynthesis of cell wall sterols, and has the functions of protection, treatment, and leaf penetration. Pyraclostrobin + difenoconazole has a better control effect on anthracnose. Spray before the occurrence of citrus anthracnose or at the beginning of the disease, and spray until the leaves are dripping with water. Depending on the occurrence of the disease, apply once every 7-10 days, and can be used continuously for 2 times.
2. Pyraclostrobin + Oxaflucondone
Falfazone is highly systemic and lipophilic. After spraying on the leaves of crops, it has the characteristics of easy adhesion and resistance to rain erosion. However, pyraclostrobin acts faster, and can penetrate into the leaves within a few minutes of application. The active ingredients diffuse in the mesophyll tissue, and form a sedimentation film on the leaves, which adheres closely to the waxy layer, which can effectively control The pathogenic spores in the leaves have a preventive effect and a long-lasting effect. Spraying pyraclostrobin + oxaflucondone mixed with water has a good control effect on potato late blight.
3. Pyraclostrobin + Tebuconazole
The mechanism of action of tebuconazole is to inhibit the biosynthesis of ergosterol in pathogenic bacteria. Pyraclostrobin + tebuconazole has a good effect on powdery mildew and scab. Spray evenly at the early stage of wheat powdery mildew and scab, and apply once every 7-10 days.
4. Pyraclostrobin + Disenlian
It has the triple functions of preventing the invasion of germs, preventing the spread of germs and eliminating germs in the body. It can be used to prevent and control various diseases of fruits and vegetables with rapid action, reliable efficacy, long-lasting effect and safety to crops. After use, it can help improve the physiological activity of crops, delay aging, and ensure yield and quality. And it does not contain manganese ions, so it will not cause manganese ion poisoning of crops. Before the onset or at the initial stage of medication, the medication should be applied continuously at intervals of 7-8 days.
5. Pyraclostrobin + Propineb
Propineb is a broad-spectrum, quick-acting protective fungicide. It works by inhibiting the oxidation of pyruvate in pathogenic bacteria. It has special effects on cucumber downy mildew. It can be used in the early stage of cucumber downy mildew to prevent the whole plant Spray, when spraying, spray both the front and back sides of the leaves, and the spray is even.
Six, pyraclostrobin + boscalid
Boscalid is a new type of nicotinamide broad-spectrum fungicide, which belongs to the succinate coenzyme Q reductase inhibitor in the mitochondrial respiratory chain. It has a strong inhibitory ability to spore germination and has no cross-resistance with other fungicides. The compound preparation has good control effect on Botrytis cinerea, and it should be used at the early stage of the disease.
Seven, pyraclostrobin + quinoline copper
Copper quinoline is sprayed on the surface of crops to form a tight protective film, which directly kills the pathogenic bacteria in the film and prevents re-infection. When used in combination, it has a good control effect on apple tree ring disease and is safe to apples. The pesticide should be applied after the apple fades, once every 10-16 days, and about 3 times in a row, and the spray should be uniform and thoughtful.
Eight, pyraclostrobin + iprodione
This formula is a mixed preparation of dicarboximides and methoxyacrylates, which has inhibitory effects on all growth stages of pathogenic bacteria. Through the combination of osmotic conduction and contact killing, the quick-acting and long-lasting effects are improved, and can be used for Prevention and control of various diseases of fruit trees and vegetables. When controlling apple tree spot defoliation and brown spot disease, apply pesticides at the early stage of disease occurrence, and pay attention to uniform and thoughtful spraying.
Nine, pyraclostrobin + epoxiconazole
Epoxiconazole is a triazole fungicide, and its mechanism of action is to inhibit the biosynthesis of ergosterol by pathogenic bacteria. It has high activity, strong systemic property and long-lasting effect. When used in combination, it has better control effect on banana leaf spot. The medicine should be applied at the early stage of the disease, and the medicine should be applied continuously at intervals of 7-15 days, and the medicine should be applied up to 3 times per season.
10. Pyraclostrobin + Cyazofamid
It is a broad-spectrum compound fungicide with a long-lasting effect, resistant to rain erosion, and has certain systemic, protective and therapeutic effects. It can be used to treat stems and leaves, and has a good control effect on grape downy mildew. It can be sprayed evenly in the early stage of the disease.
Precautions for mixed use of pyraclostrobin (175013-18-0)
1. Be careful not to mix the microbial fungicide pyraclostrobin with alkaline fungicides, emulsifiable concentrates, and silicones. When mixed with other agents, attention should be paid to the concentration and tests should be done.
2. The microbial fungicide pyraclostrobin should be mixed with foliar fertilizer. First dissolve the foliar fertilizer, and then pour pyraclostrobin. Under normal circumstances, pyraclostrobin plus potassium dihydrogen phosphate, plus trace elements, the effect will be very good.
3. The microbial fungicide pyraclostrobin itself has high penetration, so it is not recommended to add silicone.
4. The microbial fungicide pyraclostrobin can be used in combination with brassin, but it is best to mix them after secondary dilution.
5. The microbial fungicide pyraclostrobin is not recommended to be mixed with strong oxidizing pesticides, such as potassium permanganate, hydrogen peroxide, peracetic acid, and chlorine bromine.
The mechanism of action of the microbial fungicide pyraclostrobin is to exert its drug effect by inhibiting the germination of spores and the growth of hyphae, that is, to kill pathogenic bacteria before the disease occurs. Therefore, the advantages of the drug can be brought into full play by using the drug before the disease occurs or at the initial stage.
Microbial fungicide pyraclostrobin is known for its preventive effect and long-lasting effect. Compared with other targeted fungicides, the quick-acting fungicide is still slightly insufficient. It is best to use it with other fungicides or use a compound agent.
The microbial fungicide pyraclostrobin has a relatively single action site, so resistance develops relatively quickly. Be sure to control the number of uses when using it, so as not to accelerate the generation of resistance.
When mixed with pesticides such as emulsifiable concentrate, organosilicon, and organophosphorus, due to mutual enhancement of permeability, the risk of phytotoxicity is increased, and improper mixing will cause burns to young fruits. Especially in the nursery stage of crop seedlings, where the crops grow vigorously and the conditions are high temperature and high humidity, there is a certain risk of phytotoxicity if the concentration of pyraclostrobin is too high.
When mixing, pay attention to the order of putting in. If there is foliar fertilizer, the foliar fertilizer must be dissolved first to prevent the foliar fertilizer particles of EC from wrapping and affecting the dissolution effect, and then pour pyraclostrobin and other products.
Do not mix pyraclostrobin with strong oxidizing pesticides such as potassium permanganate, hydrogen peroxide, peracetic acid, and chlorine bromine.
Microbial fungicide pyraclostrobin (175013-18-0) price
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