Description
Powdery mildew is a fungal disease that occurs most commonly on the cool-season grasses such as bluegrasses and fescues. The fungus is usually first seen as isolated wefts of fine, gray-white cobwebby growth on the upper surface of the leaves. This growth rapidly becomes more dense, and may cover the entire leaf, giving it a gray-white appearance. In cases of severe outbreaks, entire sections of lawn may be dull white, rather than green.
Disease Cycle
The pathogen survives the winter months in dead grass leaves from the previous season, as well as in a dormant state in infected grass plants. Fungal spores are spread primarily by wind. The conidia that land on a susceptible plant germinate quickly and the infection process begins within two hours from the time they land on the leaf. Conditions favorable for the development of powdery mildew include poor air circulation; high atmospheric humidity, without free water on leaf-blade surfaces of the leaves; low light intensity and an air temperature of 650 F. The disease is usually more severe on turfgrass growing in shaded areas than in full natural light.
Control Cultural Practices
Various grass varieties differ in their susceptibility to powdery mildew. Marion Kentucky Bluegrass, for example, is more susceptible to the powdery mildew fungus than common Kentucky Bluegrass. However, selection of common Kentucky, solely because of its higher powdery mildew resistance, cannot be justified because of other disease problems and cultural characteristics. When powdery mildew is persistent, consider planting ground covers other than grasses. Changes that improve air movement and reduce grass shading will aid in disease reduction. Avoid high nitrogen fertilizers. Mow grass relatively high in mildewprone areas.
REMEDIES
FOR
POWDERY MILDEW
It is difficult to fight powdery mildew.
But it is not impossible.
To prevent plants from powdery mildew, controlling and getting ridpowdery mildew. You can prepare own special organic liquid mixture forpowdery mildew yourself, both economically and so effective.
To prepare this special organic liquid mixture, You need some ingredients that you can find your country easily, formulation and production process. You need no help and no technıcal support to make this mixture. simple mixing is sufficient.
Below textbook has a formulation and manufacturing process of special organic liquid mixture and methods of application to treat powdery mildew. You can produce special organic liquid mixture for powdery mildew easily and apply to plants safety.
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