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Download Common Vegetable Diseases
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Common Vegetable Diseases Powdery Mildew • Most commonly found on peas and cucurbits (squash, melons, cucumbers). • Caused by high humidity, shady locations, crowded planting. foliage, spray plants with fungicide such as Serenade PRIOR to seeing mildew. Blossom End Rot • Blossom end rot effects tomatoes, peppers, squash, zucchini and watermelons. • Begins as a water-soaked spot near the blossom end of the fruit. spreads and turns dark brown and cracks. by inconsistent watering; create a rigid schedule! Water in am at same time, water in pm at same time. Mulch plants to conserve moisture. • Can also be caused occasionally by calcium deficiency; Off The Vine granular tomato food is a great source of calcium. Early Blight of Tomatoes • A common fungal disease that causes spots on tomato foliage. • Typically affects older leaves closest to the ground and then moves upwards causing newer growth to die, eventually affecting the whole plant. • Avoid wetting the foliage when watering, remove lower leaves. • Do not compost plants as the spores overwinter. 780-467-7557 g reenla n dga rden.com [email protected] Late Blight • Attacks all the above ground parts of the tomato. • Most often occurs during consistently cool, rainy weather. • Spores spread by wind. POTATO SCAB • Tan/dark brown scabs on tubers. Is only aesthetic— tubers are edible! •Most severe in warm, quick drying soils, and at a high pH soil range (alkaline). •Plant certified stock. Rotate potato crops every 3-4 years. • Ensure consistent moisture as tubers are forming • Ammend soil with sulphur or Aluminum Sulphate (to lower soil pH). For more information on pests and diseases, please visit the What’s Bugging section of our website. 780-467-7557 g reenla ndga rden.com [email protected]