Phalaenopsis common diseases and prevention, common diseases and medication

1. Anthrax

Phalaenopsis is infected with anthracnose mostly because the environment provided is too humid and the ventilation is too poor. Once infected, small spots will appear on the leaves, which will gradually expand and become black-brown or yellow-brown spots. Once discovered, timely treatment is required, more ventilation is provided, fertilizer and water management is strengthened, the growth environment is improved, and disease resistance is enhanced. In addition, you need to spray medicine. You can use mancozeb. Apply it once a week and spray it two or three times to be effective.

2. Botrytis cinerea

If the plant's environment temperature is too low and too humid during management, it is easy to be infected with gray mold, and the flowers are easily damaged when the disease occurs. In the early stage, there are water-like spots on the flowers and sepals. In the later stage, the spots will expand and become circular patches. In severe cases, the flowers will fall off. After discovering it, ventilate it more and let it get more sunlight. Also cut off diseased flowers to avoid infection. In the later stage, you need to spray cyproconazole once every ten days, and it will be effective after two or three times.

3. Soft rot

This disease often occurs in a high temperature and humid environment, harming the leaves of the plant. There will be transparent spots on the leaves, and the leaves will rot later. The harm is serious and contagious, so they need to be treated as soon as possible. The moisture should be controlled and pesticides should be sprayed for treatment. You can use either thiophanate-methyl or polyoxin, spray it once every ten days, and two or three times can control the disease.

4. Brown spot disease

Brown spot disease also occurs in seasons of high temperature and high humidity. When the disease occurs, there will be brown irregular spots on the leaves, which will cause great harm to seedlings. In severe cases, the leaves of old plants will also turn yellow and dry up. When treating the disease, you should also spray polyoxin once every ten days. Spraying two or three times can control the disease.