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Well known as the n ° 1 enemy of the vine, mildew is indeed a constant threat to the grape harvest but also to certain vegetables from the garden such as tomatoes or potatoes.
Preventive and regular treatment should ensure a good harvest without mildew.
Read also : tomato mildew
Symptoms of late blight
Downy mildew is characterized first by the appearance of a few spots on the leaves to spread slowly to the whole foliage.
- It is a fungal disease that mainly affects Vine, tomatoes and potatoes.
- Brownish spots form in places on the leaves, they eventually turn completely brown and fall off
When does late blight develop?
Downy mildew particularly likes hot, humid conditions and dense foliage that lacks air and light.
- Humidity is the main factor favoring its development.
- Like most fungal attacks, downy mildew will tend to spread more easily after a downpour.
- Spaced and airy plants limit the spread of mildew.
Organic anti mildew treatment
There are very effective organic treatments to fight and treat mildew.
- The Bordeaux mixture is the only effective preventive measure against mildew.
- Regular application in early spring and fall is necessary.
- The treatment is applied throughout the growing cycle.
- Treat at regular intervals, on average every 2 weeks and after it rains.
- In the event of an attack, only complete destruction of the affected parts is effective.
Bicarbonate and mildew:
Baking soda is an excellent treatment for mildew.
- Dilute 1 tablespoon of baking soda in 1 liter of water (ideally rainwater or mineral water which is less hard)
- In dry weather, spray this solution on all the leaves, taking care to reach the tops and bottoms of the leaves.
Other diseases and treatments
- Find the main plant diseases and their treatment
- To read also: the late blight of the tomato
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