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2. Powdery mildew - Wikipedia

   en.wikipedia.org/wiki/Powdery_mildew

   Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of ascomycete fungi in the order Erysiphales . Powdery mildew is one of the easier plant diseases to identify, as the signs of the causal pathogen are quite distinctive.

3. Why you should take steps if you see a grayish powder ... - AOL

   www.aol.com/news/why-steps-see-grayish-powder...

   Powdery mildew usually appears in spring or early summer. Although it thrives in warm, humid conditions, it is also found in cooler climates. Easy, non-chemical practices can go a long way toward ...

4. Ampelomyces quisqualis - Wikipedia

   en.wikipedia.org/wiki/Ampelomyces_quisqualis

   Ampelomyces quisqualis is a mycoparasite of powdery mildews. It overwinters or survives in the absence of a suitable host as pycnidia. Raindrops cause conidia to be expelled from ripe pycnidia and these may splash onto nearby powdery mildew. Infection is favoured by humid conditions and temperatures in the range 20 to 30 °C (68 to 86 °F) and ...

5. Plant disease - Wikipedia

   en.wikipedia.org/wiki/Plant_disease

   Powdery mildew, a biotrophic Ascomycete fungus. Most phytopathogenic fungi are Ascomycetes or Basidiomycetes. They reproduce both sexually and asexually via the production of spores and other structures. Spores may be spread long distances by air or water, or they may be soil borne.

6. Erysiphe cruciferarum - Wikipedia

   en.wikipedia.org/wiki/Erysiphe_cruciferarum

   The powdery mildew initially appears as white, powdery spots formed on leaf surfaces, shoots, and sometimes flowers or fruits. Over time, the spots spread over a larger area of leaves and stems. Eventually, leaves infected with powdery mildew may turn yellow in color and proceed to die or fall off.

7. Erysiphales - Wikipedia

   en.wikipedia.org/wiki/Erysiphales

   In most powdery mildews only the epidermal cells are attacked. The external mycelium gives rise to short, erect conidiophores, each of which bears a single row of barrel-shaped spores, the youngest being at the base (the affected parts become thus covered with a forest of conidiophores assuming a white powdery appearance). The ripe spores ...

8. Erysiphe graminis f.sp. tritici - Wikipedia

   en.wikipedia.org/wiki/Erysiphe_graminis_f.sp...

   Erysiphe graminis f.sp. tritici is a plant pathogen that causes a fungal infection known as powdery mildew. It is most common in grains, and it can be identified by the characteristic white spots on leaves and stems that appear to be made of powder. Powdery mildew is one of the most widespread and easily recognizable plant diseases.

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