In recent years, the incidence of wheat powdery mildew has been increasing in our province, especially in most of the regions in 2015. The functional wheat leaves in severely affected areas have died earlier. This is the most serious year in the past 20 years. This year, wheat powdery mildew in our province has seen a high incidence of disease and susceptible varieties. According to the meteorological department's forecast, the temperature in our province is high in April and the process rainfall is high. The temperature and humidity in the field is suitable for the expansion and spread of wheat powdery mildew. It is expected this year. Wheat powdery mildew will reach the prevalence level.
The provincial plant protection and phytosanitary station recently released the "Trends and Prevention Opinions of Wheat Powdery Mildew", and it is expected that as the temperature rises and the degree of deterrence in the fields increases, wheat powdery mildew will enter the peak of disease in the middle to late April. Will cause heavier losses.
The "Opinions" suggest that all localities should attach great importance to the prevention and control of wheat powdery mildew, strengthen propaganda and technical guidance, and organize prevention and treatment in a timely manner to ensure that the loss of disease damage is kept to a minimum.
In terms of prevention and control methods, experts recommended that farmers' friends take the initiative to prevent and treat drug use during the initial stage of powdery mildew. Grasp in wheat booting to flowering stage, when the diseased plant rate reaches 15%-20% or the diseased leaf rate reaches 5%-10%, spraying control, early-onset recurrence area must be in the wheat ear stage pest prevention and control before the overall war alone One-time targeted prevention and control was carried out to reduce the number of illnesses; the recurrence area was re-administered once every 7-10 days after the first prevention and control, or in conjunction with the head blast prevention and control.
Pharmacopoeia may use triadimefon, carbazole, tebuconazole, propiconazole, myclobutanil, epoxiconazole and other agents. It is necessary to use sufficient amount of drugs and water to improve the effect of pest control.
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