A bulb bed will yield a rich harvest if you properly care for it, protect the vegetable from diseases and pests.
Alternaria
Alternaria of onions is a fungal disease. The first symptoms appear as white spots on the bulb feathers. The spotting develops, changing color from whitish to brownish-purple. Fungal spores spread quickly, so alternaria can kill the crop.
To protect onions, first of all, you need to comply with phytosanitary standards: crop rotation, weed control, clearing the bed of plant debris. But if infection has occurred, fungicide treatment is carried out with appropriate preparations or copper sulfate (20 g) with the addition of shavings of laundry soap (200 g) per 10 liters of water.
Supporters of chemical-free methods of control use the biological product Trichodermin. It is used as a preventive measure, spraying onions in April and May.
Downy mildew (or peronosporosis) affects the surface of the leaves, persists in the seeds and husks. In a diseased plant, the leaves are affected by oily greenish-yellowish spots. When the spots spread, the onion feathers die, and the bulb stops growing.
Decorating every corner of the garden: 10 shade-tolerant ornamental shrubs
Natural remedies are used to protect against downy mildew.
Spraying with ash infusion is carried out after 3 weeks. To do this, soak half a bucket of wood ash in 8–9 liters of water and let it sit.5 tips to protect onions from diseases
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5 tips to protect onions from diseases
The onion bed will produce a rich harvest if you properly care for it and protect the vegetable from diseases and pests.
