Powdery mildew is a cryptogamic disease well known to gardeners. Also called powdery mildew, it occurs when there is a significant difference in temperature and humidity between day and night. Once settled on the leaves of the fruit tree, it can be very heavy. It is therefore better to take precautions before taking possession of your plants. Find out how to prevent and treat powdery mildew.
Powdery Mildew Symptoms
This fungus usually affects roses, melons, courgettes, apple trees, etc. They are therefore mainly the most common plants. Powdery mildew is recognized when the foliage of the plants begins to show a kind of whitish, slightly floral thatch. Also plant stems and flowers are sometimes affected by this white felt. Over time, you will see the leaves warp and curl while looking swollen.
Powdery Mildew Treatments and Control
Preventive measures can be taken to prevent the spread of this disease. A good distance between the plants is essential for this. Wet leaves usually cause the appearance of powdery mildew. A good cleaning around the various plantations will remove the excess moisture. Also avoid watering the leaves of young plants and even more mature plants. And in hot weather it is better not to water the leaves. In addition, immediately remove the affected parts of the plant so that the disease does not spread to the rest of your crops.
Sulfur treatment can eliminate the fungus and can be a preventative solution, but it’s not the best for the environment. For this, sulfur must be diluted in water, which is found in powder form. Be sure to follow the dosages on the packaging. On the other hand, it is necessary to act quickly and treat the plants well as soon as the symptoms appear. Indeed, beyond a spread of more than 10% to 15% of the fungus, the treatment then becomes totally ineffective.