Beware of high-temperature and high-humidity diseases of flowers

In March and April, flower production in northern China is generally still in greenhouse facilities, but at this time enterprises have gradually reduced the temperature in the facilities, but the humidity is still very high, prone to the outbreak of fungal diseases such as gray mildew and downy mildew.

Dong Yuguang, technical manager of plant protection at Syngenta, told reporters that the production of potted flowers such as Phalaenopsis, Cymbidium and Anthurium in northern greenhouses requires high humidity and is prone to fungal diseases.

Although companies can avoid infection by cutting off pedicels, he thinks the best way is to ventilate and dehumidify in time when the weather is good, or to use drugs such as chlorothalonil for protective sterilization. If it is found that some plants have been infected with the disease, chemical reagents containing nitriles such as Huiyou should be used to control the disease.

In addition to the above diseases may occur in southern flower production, flower seedlings are easy to grow because of high temperature and humidity, and stems are often affected by some soil-borne diseases, such as quenching, blight and other diseases.

To prevent these diseases, you can directly sprinkle the potion containing fungicides during the first watering, or mix the matrix or soil with fungicides during sowing.