The Importance of Choosing the Best Fungicide for Powdery Mildew Treatment

Powdery Mildew is a common fungus that attacks a wide variety of plants; it is easily recognizable and virtually no plants are immune to it.

Signs and Symptoms

Powdery MildewPowdery Mildew appears as light gray or white powdery splotches on infected plants. While initially there are few visible spores, the fungus can quickly spread and coat leaves, stems, buds and fruit.

In fruit and vegetable-producing plants, Powdery Mildew will weaken the taste and quality of the produce. It can also stunt plant growth and distort the shape of buds, blooms and fruit. If left untreated, it can cause leaves to turn yellow and drop prematurely. It will eventually kill the infected plants.

Some plants are more susceptible to Powdery Mildew than others. Lilacs, crab apples, roses, grapes, squash and cucumber are particularly frequent targets of the fungal disease. However, it seems to be everywhere.

Powdery Mildew fungi overwinter in plant debris and start producing spores in the spring. The spores are then spread by wind, insects and splashing water. Eventually, they land on plants and under the right circumstances grow and spread.

Conditions that encourage the growth and spread of powdery mildew include humidity, dampness, poor air circulation and crowded planting.

Powdery Mildew Treatment and Management

Powdery Mildew infection is often possible to prevent. It is essential to choose healthy plants, especially resistant cultivars if possible. If disease-resistant varieties of desired crops aren’t available, it’s recommended susceptible plants not be grown in shady areas.

Maintaining good air circulation by first spacing plants properly and then thinning and pruning regularly will also help stave off the conditions Powdery Mildew thrive under.

Should plants be stricken with the disease, there are several steps involved in Powdery Mildew treatment. First, remove and destroy all infected plant parts. After doing so, sanitize garden tools to prevent them from carrying the spores elsewhere.

In addition, while treating Powdery Mildew, do not water from above or fertilize infected plants. The fungus thrives in damp conditions and flourishes on young, succulent plants. Consequently, these actions provide an ideal environment for disease.

Powdery Mildew Fungicide

Application of an environmentally friendly Powdery Mildew fungicide such as OxiDate is also effective in disease prevention and control. It can be applied as a soil drench, pre-planting dip or surface disinfectant.

While there are many fungicides available, OxiDate is especially popular due to it’s rapid effectiveness in treating Powdery Mildew. Because the spores can spread so quickly, a product that works quickly is important.


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