How to treat wheat stripe rust? Wheat stripe rust is a major epidemic disease with high airflow, and it has the characteristics of sudden strongness, fast spreading speed, difficult monitoring and heavy damage. The disease mainly occurs on the leaves, followed by leaf sheaths, stems, ears, husks and awns. Wheat small series with everyone to learn about wheat stripe rust disease control technology.
Chemical dressing
Mix the seed dressing with fungicide and insecticide, first mix the insecticide, then mix the fungicide. The commonly used insecticide is 50% phoxim emulsifiable concentrate, which is 0.2% seed dressing, which can effectively control wheat underground pests. Commonly used fungicides are triazolone wettable powder, 0.01% to 0.03% by weight of dry seeds (active ingredient), or 70% of methyl thiophanate-methyl WP 100g, or 12.5% ​​of Tetrolol wettability. Powder 60~80g, mixed with 50kg of wheat, can effectively prevent wheat stripe rust and leaf rust, and can also cure powdery mildew, smut and total erosion. The efficacy of spring wheat can be maintained for about 60 days; after winter wheat seed dressing, the incidence of wheat seedlings before winter is small, and can continue until the second year of disease epidemic.
2. Spraying points
The prevention and control of wheat stripe rust should be based on the monitoring of field disease, focusing on the prevention and control of the three key periods of winter spotting, jointing stage and booting stage, and the occurrence of the disease center before and after the jointing stage of wheat. Immediately use 15% triazodone wettable powder 100g per 667m2, spray 60~80kg of water, then it is about March, the temperature is lower, and the effective period can reach 15d after application. It is also possible to dilute 500-700 times solution with 80% sensible zinc wettable powder, or 15~30 g of 12.5% ​​special spectrum alcohol, and spray 50 kg of water. During the booting stage of wheat, due to the temperature rise, the effective period after application is 10~15d, the effective period is 5~7d, and when the diseased leaf rate is about 5%, the spraying is started to control the local bacterial source, except for the use of 15% triadimefon. At the wet powder, 20% rust emulsified milk 400 times solution or 25% propiconazole (enemy detachment) emulsifiable concentrate 30~35mL (active ingredient 5~8g) can be used to spray 40~45kg of water. For the discovery of the key field of the strip rust central disease group, it is necessary to take "drug reconnaissance and find a little control" to timely control the disease center. For the 667m2 of the disease center, 15% triazolone wettable powder 75~100g or 20% propiconazole emulsifiable oil 120~180mL was used for picking, and the surrounding fields were sprayed and treated at the same time. In the later stage of wheat production, 500g of potassium dihydrogen phosphate per 667m2 is sprayed on 50kg of water to prevent premature senescence of leaves and reduce stripe rust.
3. Unified prevention
At present, the prevention and control of wheat stripe rust should be combined with wheat scab, powdery mildew, sheath blight and wheat midge. According to the types of major pests and diseases that occur locally, adapt to local conditions, prescribe the right medicine, and adopt local control measures.
Wheat scab: The key period for the control of scab is from wheat spike to early flowering. Pharmaceutics can be used with 25% cylamella suspension 150g, 667m225% prochloraz emulsifiable concentrate 15g, 667m250% carbendazim WP 100g or 667m270% thiophanate-methyl WP 100g per 667m2 After the spray on the wheat ears, evenly spray. If it rains within 3 to 6 hours after application, it should be replenished in time after rain. In case of cloudy weather, it should be applied before the rain. If it is not applied before the rain, it should be repaired when the rain stops and the wheat ears are slightly dry.
Wheat powdery mildew: 25% triazolone wettable powder 28~37g per 667m2, 40% myclobutanil wettable powder 4~6g per 667m2, 30~40kg water, evenly sprayed.
Wheat sheath blight: 5% Jinggangmycin water 150~170mL per 667m2, 30% difenoconazole/propiconazole EC 13~26mL per 667m2. For water 30~40kg, the base of the stem is sprayed.
Wheat aphid: Disperse granules with 25% thiamethoxam water per 667m2, or 4g of 70% imidacloprid water dispersible granules, or 16~20g of pyridone, spray evenly on water, interval 7~10d, depending on the insect condition Spray even 1 or 3 times.
The above is the prevention and control technology of wheat stripe rust, I hope that these contents can help farmers who need it!
Kids Walkie Talkie,Kids' Walkie Talkies,Hd 2.0 Kids Camera,Mini Walkie Talkie
Shenzhen Zuomi Technology Co., Ltd. , https://www.zuomicamera.com