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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...

   That’s powdery mildew, a fungus that affects a wide range of fruits, vegetables and flowers, coating their leaves, stems, blossoms and, in severe cases, entire plants. It isn’t pretty.

4. Insecticidal soap - Wikipedia

   en.wikipedia.org/wiki/Insecticidal_soap

   Among green peach aphids that are in contact with a 2% soap solution, around 95% of the adults and 98% of nymphs die within 48 hours. [15] At 0.75% concentration, the mortality rates are reduced to 75% and 90%, respectively. Since 2011, insecticidal soap has also been approved in the United States for use against powdery mildew.

5. Bordeaux mixture - Wikipedia

   en.wikipedia.org/wiki/Bordeaux_mixture

   It is used in vineyards, fruit-farms, vegetable-farms and gardens to prevent infestations of downy mildew, powdery mildew and other fungi. It is sprayed on plants as a preventive treatment; its mode of action is ineffective after a fungus has become established. It was invented in the Bordeaux region of France in the late 19th century

6. 7 Organic Pesticides You Can Make at Home To Protect Your ...

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7. Lime sulfur - Wikipedia

   en.wikipedia.org/wiki/Lime_sulfur

   Lime sulfur is believed to be the earliest synthetic chemical used as a pesticide, being used in the 1840s in France to control grape vine powdery mildew Uncinula necator, which had been introduced from the USA in 1845 and reduced wine production by 80%. [citation needed] In 1886 it was first used in California to control San Jose scale ...