Wheat powdery mildew , rust is a high incidence during wheat planting, how to prevent it, the use of spraying pesticides, Xiaobian recommended tebuconazole.
Tebuconazole is a triazole fungicide with similar bactericidal properties to triazolone. Because it is highly systemic, it can be used to treat seeds, kill germs attached to the surface of seeds, and can also be transmitted to the top in crops to kill pathogens in crops; used for foliar spray. It can kill the pathogens on the surface of stems and leaves, and can also conduct upwards in the crops to kill the bacteria in the crops. The sterilization mechanism is mainly to inhibit the biosynthesis of ergosterol of pathogenic bacteria, and can control the genus of powdery mildew, rust fungus and cockroaches. Diseases caused by spores, nucleocapsids and genus. Its biological activity is higher than that of triazolone and triazol, and its performance is low. However, it should be noted that it should not be used at high concentrations. If the dosage exceeds the specified limit, it will affect the emergence of wheat, so it should be used strictly according to the product label or the recommended dosage.
The following is the disease weight of tebuconazole to control crops:
(1) cereal crop diseases, control wheat smut and smut, 100% to 150g or 2% dry powder coating agent per 100kg of seed, 100~150g or 2% dry powder coating agent Or 2% suspension seed coating 100-150 grams or 6% suspension seed coating 30-45 grams, seed dressing or coating. Control wheat sheath blight, every 100 kg of seed, with 2% dry dressing or wet seed dressing 170-200 g or 5% suspension seed dressing 60-80 g or 6% suspension seed coating 50-67 g or 0.2 % suspended seed coating agent 1500 ~ 2000 grams, seed dressing or coating. Control wheat powdery mildew and rust, use 12.5 grams of active ingredients per mu, spray on water.
Control corn smut, every 100 kg of seed, use 2% dry or wet seed dressing or 2% dry powder coating agent 400-600 g or 6% suspension seed coating 100-200 g, seed dressing or bag clothes.
To control sorghum smut, every 100 kg of seed, use 2% dry dressing or wet seed dressing 400-600 g or 6% suspension seed coating 100-150 g, seed dressing or coating.
Seeds treated with tebuconazole require land to be leveled when sowing, and the seeding depth is generally 3 to 5 cm. The emergence may be a little late, but does not affect the future growth.
(2) Fruit tree disease control apple spotted leaf disease, spraying 43% suspending agent 5,000 ~ 7 000 times liquid at the beginning of the disease, spraying once every 10 days, spraying 3 times in the spring shoot period, and spraying 2 times in the autumn shoot period .
In the prevention and treatment of pear scab, the spraying of 43% suspending agent 3 000 ~ 4 000 times at the beginning of the disease, spraying once every 15 days, a total of 4 to 7 times.
Prevention and control of banana leaf spot disease, spraying the fungicide tebuconazole 12.5% ​​water emulsion 800～1 000 times liquid or 25% water emulsion 1 000～1 500 times liquid or 25% milk oil 840～1 250 times in the early stage of leaf disease The liquid was sprayed once every 10 days for a total of 4 sprays.
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