Butterfly flower disease and insect pest control methods

Common diseases

Bacterial soft rot

symptom

It is mainly caused by bacteria of the genus Eurippina, which leads to the rot of the tissues or organs of the butterfly flower, mainly harming the plant's organs, tubers, stem base, etc. The damage is serious during the outbreak period. Soft rot caused by bacteria usually produces indole due to the decomposition of protein glue by miscellaneous bacteria, which leads to a foul odor.

Prevention and treatment methods

1. Disinfection of seedlings

2. The cultivation pots and utensils must be disinfected.

3. The cultivation method should be appropriate.

4. Use medication for prevention. You can choose agricultural antibacterial drugs such as streptomycin, chloramphenicol, etc., and the concentration does not need to be very high.

Leaf blight

symptom

July to October every year is the peak period of butterfly flower leaf blight. The disease occurs more seriously on the leaves of the plant. The leaf blight will overwinter on the diseased leaves of the butterfly flower. When the temperature is suitable the following year, it will spread to the butterfly flower through wind and rain and infect it.

Prevention and treatment methods

1. In autumn, remove the diseased leaves thoroughly and concentrate them to prevent them from harming the butterfly flowers next year.

2. Strengthen the cultivation and management of butterfly flowers and control the occurrence of diseases.

3. In areas where the disease is more serious during the growing season, spraying can be carried out every ten days. Continuous spraying several times can effectively prevent and control the disease.

Common pests

Pests

Often caused by feeding by larvae of the armyworm, snails and slugs. Generally, it will harm the roots of butterfly flowers from June to August every year, and the undecomposed organic fertilizer will often induce the adult insects to lay eggs.

Prevention and treatment methods

It can be controlled by spraying 1000 times diluted 40% oxydemeton-methyl emulsifiable concentrate. Or use 3% lime water for spraying in the evening.