What to do if lucky bamboo leaves have spots

one. reason:

The cause of this phenomenon is most likely infection by pathogenic bacteria. The disease is usually transmitted through wounds, and it will become more severe in a humid environment. In Guangdong, the highest incidence rate occurs from May to September, because the temperature is relatively high during this period, and the humidity in the air is also very high. In addition, there are typhoons and showers in the summer, which cause wounds and allow the disease to spread quickly.

two. sign:

The disease initially manifests itself as brown spots with yellow edges on the leaves. After being infected by the bacteria, its markings will become nearly circular, the middle of the leaves will appear gray, and the edges of the leaves will be dark brown. If the environment is too humid, black particles will grow on the spots on its leaves.

three. Prevention and treatment:

1. If you are growing several bamboos and their leaves are lush, it is best to grow them separately and not too densely. Place them in a well-ventilated area with bright, diffuse light.

2. In the early stage of the disease, you can choose to use 3000 times diluted with 42% of carbendazim powder, or 1000 times diluted with 88% of hydrated mycobacterium, or 800 times diluted with 25% of copper chelate. Spray these medicines on the diseased leaves two or three times a week.

3. If the disease is already serious, cut off the leaves that have been infected with the bacteria.