Tips For Treating Diseases Of Onion
A wet growing season is a bad news for onion crops. Many diseases, most of the fungal, invade the garden and spoil the onions in times of hot and humid weather. Read on to learn more about onion diseases and their control.
Onion Diseases and Their Control
It is difficult to differentiate between the many diseases that affect onion plants. Even specialists often rely on laboratory tests to obtain a definitive diagnosis. Fortunately, you don't need to know exactly what disease has infected your plants to act.
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Onion diseases arise during hot, humid weather and most have similar symptoms, including leaf and bulb blemishes and lesions, areas that appear waterlogged, foliage darkening, and drooping. There is no method to treat onion diseases and the damage cannot be reversed. The best course of action is to focus on next year's harvest so it doesn't happen again.
Here are some growing tips to help prevent the introduction of disease into your onion crop:
- Put the onion in rotation for three to four years. You can grow other crops in the area for years to come, but avoid members of the onion family, such as garlic and chives, as well as ornamental alliums.
- Avoid fertilizing with nitrogen after the middle of the season. Nitrogen fertilizer slows down bulb development and gives diseases more time to infest your crop.
- Dispose of waste and other organic waste immediately. The fungi hibernate in the debris left in the garden, and that includes onion plant matter that you plow into the ground. Good sanitation helps keep disease pathogens out of the yard.
- Be careful when using a grow tool around onions. Cuts in bulbs and foliage create an entry point for disease spores.
- Buy seeds, plants, and sets from a reputable garden center. Whenever possible, buy material certified as disease-free.
- Disease spores can also invade onions after harvest. Spread the onions out on a table or canvas to dry after harvest. Make sure air circulates freely around you.
- Take out and discard the infected bulbs. Disease spores can be spread by wind and water splashes on the plant. Spores also travel from plant to plant on your hands, clothing, and tools.
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Source: Hoss Tools
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Last update on 2024-12-06 / Affiliate links / Images from Amazon Product Advertising API
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