Vegetables
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VegetablesDowny mildew threatens vegetablesDowny mildew threatens vegetables
• Downy mildew, caused by the fungus Pseudoperonospora cubensis, is found annually on squash, cucumbers, pumpkins, and muskmelons grown in all areas.• Although downy mildew of all cucurbits is caused by the same species, strains of P. cubensis exist. For example, it is not uncommon to see squash, cantaloupe, and cucumber severely diseased by downy mildew, whereas watermelons, nearby, show no signs of the disease.
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