Disease control of Cineraria

powdery mildew

harm

Cineraria is most susceptible to powdery mildew, a widespread fungal disease. White sticky substances appear on the front of the infected leaves, which curl and deform, and die and fall early.

Prevention and treatment methods

1. The simplest prevention method is to ensure sufficient light and timely ventilation.

2. If the disease has already occurred, in the early stage, it is necessary to use 1000 times of 70% thiophanate methyl solution or 2000 times diluted 50% mancozeb solution. You can also use 2000 times of 25% triadimefon wettable powder for spraying to control the disease.

3. At the same time, cut off the diseased leaves and destroy them, and separate the diseased plants from the healthy plants to avoid mutual infection and aggravate the spread of the disease.

Root and stem rot

harm

In winter, the moisture in the soil of the cineraria pot is often difficult to dry up. Poor drainage, insufficient indoor light, excessively humid air and other adverse factors will cause root rot and stem rot. It manifests as blackening and rotting of roots and stems.

Prevention and treatment methods

1. First, after watering, pay attention to ventilation and humidity reduction and increase light.

2. For newly infected cineraria, cut off the diseased part, apply sulfur powder, replace with loose culture soil and replant.

Verticillium wilt

harm

The disease is mainly caused by viral pathogens. The affected plants have strong tillering ability, the expansion of the inflorescence is suppressed, the flowers turn green, and they develop abnormally, and occasionally the flowers grow too long. The virus is usually spread by leafhoppers.

Prevention and treatment methods

1. Potassium fertilizer can be appropriately applied during the growth period to enhance the disease resistance of the plant and reduce the chance of virus infection;

2. Spraying 0.5% potassium permanganate aqueous solution for disinfection can play a preventive role;

3. If a plant is found to be infected with a virus, the diseased plant should be removed immediately and burned to prevent the spread.