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| | Powdery Mildew on Vegetables Management Guidelines--UC IPM |
 | | A wide variety of vegetable crops are affected by powdery mildews, including artichoke, beans, beets, carrot, cucumber, eggplant, lettuce, melons, parsnips, peas, peppers, pumpkins, radicchio, radishes, squash, tomatillo, tomatoes, and turnips (Table 1). |
 | | Powdery mildew first appears as white, powdery spots that may form on both surfaces of leaves, on shoots, and sometimes on flowers and fruit. |
 | | An exception is one of the powdery mildews that affects artichokes, onions, peppers, and tomatoes: it produces yellow patches on leaves but little powdery growth. |
| www.ipm.ucdavis.edu /PMG/PESTNOTES/pn7406.html (1452 words) |
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