Because Watson blooms after the rainy season, whether in the South or the north of China, the air humidity is very high after the rainy season, which is the most unfavorable for the growth of Watson.
In case of powdery mildew, spray carbendazim or Triadimefon once. Carbendazim or Triadimefon can not only eliminate powdery mildew, but also prevent powdery mildew. When the air humidity is high, there is no disease, you can spray some.
House raised Watson is often not as good as the light condition of wild Watson, and the ventilation effect will be slightly deficient. At this time, the plant is closed, which is prone to whitefly damage.
Only 1000 times of 10% imidacloprid wettable powder or 1500 times of 25% chlorpyrifos wettable powder, once every 5-7 days, twice in a row, can be used for control.
