1. About Difenoconazole
The mechanism of action of Difenoconazole is mainly to inhibit the biosynthesis of ergosterol in pathogenic cells, thereby destroying the structure and function of pathogenic bacterial cell membranes and causing fungal death. It is a relatively safe, highly effective, broad-spectrum, low-toxic, low-dosage fungicide with preventive, therapeutic and protective effects and systemic activity. It is widely used in fruit trees, vegetables, cereals, horticultural crops, etc. to prevent and control black spot, leaf spot, powdery mildew, etc. It is also often used as a seed treatment agent for wheat and corn to prevent and control black smut, etc.
2. Product features
(1) Broad fungicide spectrum. Difenoconazole has good control effects on various diseases caused by pathogens such as ascomycetes, basidiomycetes and imperfect fungi. It also has good therapeutic effects on wheat loose smut, bunt, take-all, powdery mildew, root rot, sheath blight, glumes, leaf blight, rust, beet brown spot, apple black spot, powdery mildew, grape powdery mildew, peanut leaf spot, net spot, potato early blight, cucumber powdery mildew, anthracnose, tomato early blight, grape black pox, citrus scab, etc.
(2) Systemic conductivity. Difenoconazole has a strong penetration effect and a very good systemic effect. It can be absorbed by the roots, stems and leaves. After entering the plant body, it inhibits the biosynthesis of cells and interferes with the normal growth of the pathogen. At the same time, it can quickly conduct upward in the plant body, protecting the new young leaves, flowers and fruits from the harm of the pathogen.
(3) Good compatibility. The main dosage forms of Difenoconazole include 92%, 95%, 97% original drug, 10%, 15%, 20%, 30%, 60% water dispersible granules, 10%, 20%, 25%, 30% microemulsions, 5%, 10%, 20%, 25% water emulsions, 30 g/L suspension seed coating, 25%, 30% emulsifiable concentrates, 10%, 25%, 30%, 40% suspensions, 10%, 30% wettable powders, etc.
Difenoconazole can be mixed with fungicides and insecticides such as propiconazole, azoxystrobin, carbendazim, methyl thiophanate, fludioxonil, kresoxim-methyl, prochloraz, epoxiconazole, metalaxyl-M, hexaconazole, mancozeb, imazalil, cymoxanil hydrochloride, propineb, pyraclostrobin, polyoxins, cyproconazole, jinggangmycin, thiophanate-methyl, thiophanate-methyl, tebuconazole, pyrimidine nucleoside antibiotics, thiram, imidacloprid, bromothionil, thiamethoxam, etc. It can also be used to produce compound fungicides and seed treatment agents. Currently, there are more than 450 registered compound products.
The ones with relatively outstanding effects and wide applications include benzoyl·azoxystrobin, benzoyl·propiconazole, benzoyl·pyraclostrobin, etc., as well as seed treatment agents such as benzoyl·imidacloprid, pyrimidine·pyraclostrobin·benzoyl, phenoxy·pyraclostrobin·thiamethoxam, etc.
(4) Resistant to rain erosion and good safety. It has good safety, and the agent adhered to the leaf surface is resistant to rain erosion. It evaporates very little from the leaves and exhibits a long-lasting fungicide activity even under high temperature conditions, which is 3 to 4 days longer than general fungicides.
Several differences between Difenoconazole and Pyraclostrobin:
Pyraclostrobin is a methoxyacrylate fungicide, and Difenoconazole belongs to the triazole fungicide;
The mode of action of Pyraclostrobin is to inhibit mitochondrial respiration, leading to cell death, thereby achieving the purpose of fungicide, while Difenoconazole inhibits the biosynthesis of ergosterol in pathogenic cells, destroys the structure and function of pathogenic bacterial cell membranes, and leads to fungal death, thereby achieving the purpose of fungicide;
Although both are broad-spectrum fungicides, they still have different focuses on the prevention and control of diseases.
3. Scope of application
(1) Application on fruit trees. Control banana leaf spot and black spot; control apple and pear black spot and ring rot; control apple leaf spot; control citrus, litchi, and grape anthracnose; control citrus scab; control grape black pox and white rot; control pomegranate bark disease, etc.
(2) Application on food crops. Control rice sheath blight and rice false smut; control corn large and small leaf spot; control potato early blight; wheat seed dressing to control wheat smut (including loose smut, bunt, dwarf bunt), wheat root rot, sheath blight, glumes blight, wheat take-all disease, powdery mildew, etc.
(3) Application on vegetables, cash crops and other crops. Control watermelon vine blight and anthracnose; control strawberry powdery mildew, ring rot, leaf spot, black spot, anthracnose, brown spot, and gray mold; control pepper anthracnose, tomato leaf mold, leaf spot, powdery mildew, and early blight; control eggplant brown streak, leaf spot, and powdery mildew; control cucumber and other melon powdery mildew, anthracnose, and vine cutting disease; control beans, cowpeas and other legumes leaf spot, rust, anthracnose, and powdery mildew; control Chinese cabbage and other cruciferous vegetables black spot; control garlic and onion early blight, rust, purple spot, and black spot, control garlic leaf blight; control asparagus stem blight, Panax notoginseng black spot, and tea tree anthracnose.
(4) Usage. From the above content, we have thoroughly discovered that difenoconazole can be used to control a wide range of pests. In addition, there are many products with different dosage forms and different contents. It is difficult to explain the specific methods and dosages for different crops, different stages, and different diseases. You can adjust the dosage according to the recommended dosage on the package. Here are some simple usage principles:
In the early stage of the disease, use a low dosage, and the interval between multiple applications can be appropriately extended;
When the disease is serious, use a high dosage with a short interval;
During the epidemic period when the plants are growing vigorously, the temperature is suitable, the humidity is high, and there is a lot of rain, a high dosage can be used with a short interval, and the number of applications can be increased to ensure the effect of disease prevention and yield increase.
4. Precautions
(1) Difenoconazole should be applied as early as possible, and spraying should be carried out at the early stage of the disease for the best effect.
(2) Difenoconazole should not be mixed with copper preparations. If it is necessary to mix it with copper preparations, the dosage of difenoconazole should be increased by more than 10%, and the amount of water used during spraying must be sufficient.
(3) It is recommended to mix it with other fungicides, such as propiconazole, azoxystrobin, pyraclostrobin, tebuconazole, methyl thiophanate, jinggangmycin, and zhongshengmycin. Mixing can expand the fungicide spectrum and enhance mutual synergy.
(4) Do not use it more than 3 times per crop season. Do not overuse or abuse it. It is a treasure only when used properly.
