1、 Treatment of rusty spots

1. Brown spot: when it is infected with brown spot, there will be rust spots on its leaves. At the beginning, it will be small yellow spots, and later it will expand and become round spots. If this is the case, it is necessary to spray Bordeaux liquid at the early stage of the disease, and then spray mancozeb or tuxetine again half a month later

2. Anthrax: its leaves have rust spots and may also be infected with anthrax. This disease is mostly due to long-term exposure to high temperature and humidity. In the early stage of onset, there will be purple brown round spots and small black spots on the leaves. This disease should be prevented and controlled in advance. We should spray mancozeb from July to August, and completely remove weeds, dead branches and leaves in winter. If you have been infected with this disease, spray carbendazim on both sides of the leaves. Use it once every 10 days, and it will be effective three times

2、 Dry first aid

Its dry leaves are caused by many reasons, such as poor ventilation, improper watering and fertilization, soil discomfort and so on. If this situation is found, the management environment should be changed as soon as possible, ventilation should be strengthened, and the methods of watering and fertilization should be changed. If the soil is not suitable, change the soil as soon as possible. We should also cut off the dried leaves and spray carbendazim to disinfect them. We should spray it once a day, which can be improved in about a week. After new leaves grow, provide an environment conducive to growth and promote it to recover faster