Latest Disease Prevention and Control Methods and Techniques for Pyrostegia venusta
I. Main Diseases
The main disease of Pyrostegia venusta is damping-off, which mainly occurs in spring when there is a lot of rain. Whether it is seedlings or mature plants of Pyrostegia venusta, they will be affected. The main manifestation is that dark brown lesions appear on the affected areas, and in severe cases, large areas may even die in patches.
II. Prevention and Control Methods
1. Be sure to select plants that have not been affected by disease for transplanting. In addition, the soil must be disinfected and free of pathogens. After planting, fully decomposed fertilizer must be applied. Never use fresh farmyard manure.
2. For plants affected by disease, remove and burn them promptly. This can prevent transmission to other plants.
3. Soil disinfection is the key point. It is recommended to use 50 ml of formaldehyde mixed with 6 kg of water per sq m of soil for disinfection, or pentachloronitrobenzene and fine sandy soil can be mixed in proportion and then spread on the seedbed for growing Pyrostegia venusta. Either method can prevent disease occurrence at the source.
4. In spring, spray 70% thiophanate-methyl 1000-fold solution or 75% chlorothalonil 1000-fold solution every 10 days. Of course, they can be used alternately, and the disease prevention and control effect will be better.
III. Precautions
Although it is important, pest control at the same time cannot be ignored. It has many pests, which have a relatively large impact on its growth. In severe cases, they can cause the entire Pyrostegia venusta plant to die, so pest occurrence must also be prevented and controlled. Everyone must pay attention to this point.
Finally, I would like to remind everyone that although we all know Pyrostegia venusta can be used as medicine, do not use it indiscriminately on your own. It must be used under the guidance of a doctor. Of course, this is just an aside. Well, that is all for today's content. I hope everyone has gained something from it.