Difenoconazole is a highly efficient, safe, low-toxic, broad-spectrum fungicide that can be absorbed by plants and has strong penetration. It is also a hot product among fungicides.
Difenoconazole, also known as difenoconazole, is a new, efficient and safe triazole fungicide developed by Ciba-Geigy (now Syngenta). Its trade names include: Dividend, Gardner, Score, Sun-Dif, Shigao, Sigao, Kingshigao, Shisheng, Beidi, Dongtai Baker, etc. Has protective, therapeutic, eradication and systemic activities. It is safe for crops. When used for seed coating, it has no adverse effects on seedlings, and the seedlings emerge quickly and uniformly.
The original drug of difenoconazole has low toxicity, with an acute oral LD50 of 1,453 mg/kg in rats and an LD50 of >1,000 mg/kg in mice. However, difenoconazole is toxic to fish, and the LC50 (96 h) for rainbow trout is 1.1 mg/L.
Difenoconazole is a sterol demethylation inhibitor, inhibiting the biosynthesis of cell wall sterols and preventing the growth of fungi. It has a broad bactericidal spectrum, and both seed treatment and foliar spraying can improve crop yield and quality.
Difenoconazole can be widely used in fruit trees, vegetables, wheat, potatoes, beans, melons and other crops to effectively prevent and control scab, black pox, white rot, spotted leaf disease, powdery mildew, brown spot, Rust, stripe rust, scab, etc. For the subphylum Ascomycota, the subphylum Basidiomycota includes Alternaria, Ascospora, Cercospora, Colletotrichum, Spheromyces, Phytophthora, Cylindrospora, Septoria, It has long-lasting protective and therapeutic activity against deuteromycetes, including Powdery mildew, Pucciniaceae, and some species-borne pathogens. It also has long-lasting protective and therapeutic activity against sugar beet brown spot, wheat blight, leaf blight, and rust. It has good therapeutic effects on mildew caused by several pathogenic bacteria, such as apple scab, powdery mildew, grape powdery mildew, potato early blight, peanut leaf spot, net spot, etc.
2. Product name
Shigao, bifenconazole, etc.
3. Main dosage forms
10%, 20%, 37% water dispersible granules, 10%, 20% microemulsion, 5%, 10%, 20% water emulsion, 3%, 30g/L suspended seed coating agent, 25%, 250g/ Liter of emulsifiable concentrate, 3%, 10%, 30% suspending agent, 10%, 12% wettable powder. 3. Toxicity: Low toxicity (toxic to fish and aquatic life).
4. Mode of action
Difenoconazole water-dispersible granules are beige to brown fine particles. Difenoconazole has a strong inhibitory effect on the spore formation of plant pathogenic bacteria and can inhibit the maturation of conidia, thereby controlling the further development of the disease. The mode of action of difenoconazole is to inhibit the biosynthesis of ergosterol by interfering with the C14 demethylation of pathogenic bacterial cells, thereby causing sterol to remain in the cell membrane, damaging the physiological function of the membrane, and leading to the death of the fungus.
Difenoconazole bactericidal spectrum
Product Features
① Systemic conduction, broad bactericidal spectrum. Difenoconazole is a triazole fungicide. It is an efficient, safe, low-toxic, broad-spectrum fungicide that can be absorbed by plants and has strong penetration. After application, 2 Within hours, it is absorbed by crops and has the characteristics of upward conduction, which can protect the new young leaves, flowers and fruits from the damage of pathogens. It can treat multiple diseases with one medicine and has good control effect on a variety of fungal diseases. It can effectively prevent and treat vegetable scab, leaf spot, powdery mildew and rust, and has both preventive and therapeutic effects.
② Resistant to rain erosion and long-lasting efficacy. The pesticide adhered to the leaf surface is resistant to rain erosion and has very little volatilization from the leaves. It exhibits long-lasting bactericidal activity even under high temperature conditions and is 3 to 4 days longer than ordinary fungicides.
③ Advanced dosage form, crop safety. Water-dispersible granules are composed of active ingredients, dispersants, wetting agents, disintegrants, defoaming agents, adhesives, anti-caking agents and other additives, and are granulated through micronization, spray drying and other processes. It can be quickly disintegrated and dispersed when put into water to form a highly suspended dispersion system with no dust impact and is safe for users and the environment. Contains no organic solvents and is safe for recommended crops.
④ Good mixability: Difenoconazole can be mixed with propiconazole, azoxystrobin and other fungicide ingredients to produce compound fungicides.
How to use
Difenoconazole has good control effects on many higher fungal diseases. Mainly used to prevent and control diseases such as powdery mildew, scab, and leaf mold.
To prevent and control potato early blight, spray 50 to 80 grams of 10% difenoconazole water-dispersible granules per acre, which lasts for 7 to 14 days.
To prevent and control leaf spot, rust, anthracnose, and powdery mildew on legumes such as beans and cowpeas, use 50 to 80 grams of 10% difenoconazole water-dispersible granules per acre, with a duration of 7 to 14 days, to prevent and control anthracnose. It is best to mix it with mancozeb or chlorothalonil.
To prevent and control pepper anthracnose, tomato leaf mold, leaf spot, powdery mildew, and early blight, start spraying when the lesions first appear, once every 10 days, and spray 2 to 4 times in a row. Generally, 60 to 80 grams of 10% difenoconazole water-dispersible granules, or 18 to 22 grams of 37% difenoconazole water-dispersible granules, or 250 g/L difenoconazole emulsifiable concentrate or 25% emulsifiable concentrate are used. 25~30ml, spray on 60~75kg of water.
To prevent and control eggplant brown spot, leaf spot, and powdery mildew, start spraying when the lesions first appear, once every 10 days, and spray 2 to 3 times in a row. Generally, 60 to 80 grams of 10% difenoconazole water-dispersible granules, or 37%18~22g of difenoconazole water-dispersible granules, or 250g/L difenoconazole emulsifiable concentrate or 25% emulsifiable concentrate 25~30ml, spray 60~75kg of water.
To control powdery mildew, anthracnose, and vine cutting disease on cucumbers and other melon vegetables, use 10% difenoconazole water-dispersible granules 1,000 to 1,500 times. The duration of effect is 7 to 14 days. Spray on the leaves before the onset or in the early stages.
To prevent and control watermelon vine blight, use 50-80 grams of 10% difenoconazole water-dispersible granules per acre and spray 60-75 kg of water.
To prevent and control early blight, rust, purple spot, and black spot on garlic and onions, spray 80 grams of 10% difenoconazole water-dispersible granules per acre with 60 to 75 kilograms of water. The effect lasts for 7 to 14 days.
To prevent and control celery leaf spot, start spraying from the early stage of the disease, once every 7 to 10 days, and spray 2 to 4 times in a row. Generally, 40 to 50 grams of 10% difenoconazole water-dispersible granules, or 10 to 13 grams of 37% difenoconazole water-dispersible granules, or 250 g/L difenoconazole emulsifiable concentrate or 25% emulsifiable concentrate are used. 15~20ml, spray on 60~75kg of water.
To prevent and control black spot disease on cruciferous vegetables such as Chinese cabbage, spray pesticides from the early stages of disease onset, once every 10 days, and spray twice in a row. Generally, 40 to 50 grams of 10% difenoconazole water-dispersible granules, or 10 to 13 grams of 37% difenoconazole water-dispersible granules, or 250 g/L difenoconazole emulsifiable concentrate or 25% emulsifiable concentrate are used. 15~20ml, spray on 60~75kg of water.
To prevent and control garlic leaf blight, spray once at the initial stage of the disease. Generally, 40 to 50 grams of 10% difenoconazole water-dispersible granules, or 10 to 13 grams of 37% difenoconazole water-dispersible granules, or 250 g/L difenoconazole emulsifiable concentrate or 25% emulsifiable concentrate are used. 15~20ml, spray on 60~75kg of water.
To prevent and control purple spot disease on green onions and onions, start spraying from the early stage of the disease, once every 10 to 15 days, and spray about 2 times in a row. Generally, 40 to 50 grams of 10% difenoconazole water-dispersible granules, or 10 to 13 grams of 37% difenoconazole water-dispersible granules, or 250 g/L difenoconazole emulsifiable concentrate or 25% emulsifiable concentrate are used. 15~20ml, spray on 60~75kg of water.
To control strawberry powdery mildew, ring spot, leaf spot and black spot, and to treat other diseases, use 10% difenoconazole water-dispersible granules 2000 to 2500 times; to control strawberry anthracnose, brown spot, and concurrent treatment For other diseases, use 10% difenoconazole water-dispersible granules 1,500 to 2,000 times a day; to control strawberry gray mold mainly and also to treat other diseases, use 10% difenoconazole water-dispersible granules 1,000 to 1,500 times. times liquid. The dosage of liquid medicine varies according to the size of the strawberry plants. Generally, 40 to 66 liters of liquid medicine are used per acre. Appropriate period of application and interval of days: during the seedling cultivation period, from June to September, spray twice with an interval of 10 to 14 days; in the field period, before covering with film, spray once with an interval of 10 days; during the flowering and fruiting period, spray in the greenhouse 1 to 2 times, with an interval of 10 to 14 days.
To control large and small leaf spots of corn, spray 80 grams of 10% difenoconazole water-dispersible granules per acre, which lasts for 14 days.
To prevent and control asparagus stem blight, start spraying from the early stage of the disease, once every 10 days, and spray 2 to 4 times, focusing on the base of the plant. Generally, use 37% difenoconazole water-dispersible granules 4000-5000 times liquid, or 250 g/L EC or 25% EC 2500-3000 times liquid, or 10% water-dispersible granules 1000-1500 times liquid spray.
Notes
① It is particularly effective in preventing and controlling newly infected germs. Therefore, timely spraying of difenoconazole after rainfall can eradicate the primary source of bacteria and maximize the bactericidal characteristics of difenoconazole. This will play a very good role in controlling the development of diseases in the later stages of growth.
② It cannot be mixed with copper-containing agents. If it is necessary to mix, the dosage of difenoconazole should be increased by 10%. It can be mixed with most pesticides, fungicides, etc., but a mixing test must be done before application to avoid negative reactions or phytotoxicity. Mixing with “Tianda 2116” can improve the efficacy and reduce the occurrence of phytotoxicity.
③In order to prevent bacteria from developing resistance to difenoconazole, it is recommended that difenoconazole should not be sprayed more than 4 times per growing season. It should be used alternately with other pesticides.
④In the early stage of the disease, use a low dose and a long interval; when the disease is severe, use a high dose and a short interval; during the epidemic period when the plants are growing luxuriantly, the temperature is suitable, the humidity is high, and there is a lot of rain, a high dose can be used, the interval is short, and more medication is used. times to ensure the effect of preventing disease and increasing production. It has no inhibitory effect on the growth of vegetables.
⑤ Toxic to fish, do not pollute water sources. Avoid storage below 10℃ and above 30℃.
⑥ Pay attention to safety protection when using the medicine. If the medicine splashes into the eyes, immediately flush the eyes with water for at least 10 minutes; if swallowed by mistake, immediately send to the hospital for symptomatic treatment. There is no special antidote for this medicine. The remaining chemical liquid and washing wastewater must not pollute fish ponds, pools and water sources.
⑦ The safe interval on watermelons is 7 days, and the maximum number of uses per season is 3 times.
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