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- Plucking and destroying affected leaves helps in reducing Downy Mildew in watermelon crop.
- Plant seeds of disease-resistant varieties.
- Crop rotation and sanitation reduces the severity of the disease.
- Drench with thiophenate methyl 70% WP at the rate of 300 gm/acre.
- Spray Metalaxyl 8%+Mancozeb 64% WP at the rate of 500 gm/acre.
- Spray pseudomonas fluorescens @ 500 gram/acre.
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- Water-soaked lesions appear under the surface of leaf lamina.
- Angular spots appear on the upper surface similar to water-soaked lesions.
- Lesions appear first on the older leaves and progressive on the younger leaves.
- As the lesions expand, they may remain yellow or become dry and brown.
- Affected vines do not bear fruits properly.
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