1. Symptoms: this disease is most likely to occur in the environment of low temperature and high humidity. The symptom is that the root of wild goose is brown and rotten, and the skin may fall off. The lower leaves of the diseased plant will turn yellow or even fall off, and the whole plant will die in serious cases.
2. Control method: remove the infected plants in time and disinfect the plants. At the same time, fungicides such as fungicides such as oxamycin and rhizobacterin can be used for irrigation or spraying to prevent and control diseases.
1. Symptoms: whitefly is the most common pest in the maintenance of wild geese, which can occur all year round in the greenhouse. When the white planthopper damages the plant, the leaves of the diseased plant will appear white patches. When it is serious, it will cause the whole leaf to lose green or even wither.
2. Control method: weed and defoliation around the plant shall be removed frequently to block the source of insect. When the disease occurs, insecticides such as chlorpyrifos and rapid killing can be used to spray the diseased plants to kill the pests.
1. Symptoms: at the beginning of the disease, there are small brown spots on the leaves. The small spots gradually become larger and finally become one. Later, the whole leaf turned reddish brown and finally fell off and died.
2. Prevention and control method: remove the diseased leaves in time to avoid infecting other leaves. The disease can be treated by spraying the leaves with Bordeaux solution, tobuzin, carbendazim and other drugs. Spray once every 10 days, 2-3 times continuously.
