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Carrots are actually not very susceptible to diseases. But due to waterlogging and lack of space, various fungal diseases can be triggered. Read here which diseases can spread particularly with carrots.
The 6 most famous carrot diseases
1. Bacterial rot
Putrefaction is particularly common in waterlogging conditions, including bacterial rot.
In the case of bacterial rot, the carrots have sunken areas that are also watery. Over time, these spots turn brown and start to rot. Once there is an infection, the pathogens spread quickly. The rot can spread even when the vegetables are stored.
Infested fruits must be destroyed immediately and never stored. If the infestation is very strong, you should no longer grow carrots for three years.
2. Powdery mildew
Powdery mildew is very common in domestic gardens, so it can also infest carrots.
On the surfaces of the leaves there is a white coating that is reminiscent of flour, hence the name. Little by little vital nutrients are removed from the carrots so that they do not develop well and can consequently die.
The infected plant parts should be removed immediately. Water the plants only in the root area so that the leaves do not get damp. You can combat powdery mildew with home remedies such as a nettle slurry, skimmed milk, a detergent-oil mixture or horsetail broth.
3. Carrot blush
If there is an infestation with the so-called carrot blush, there is no prospect of success in the home garden in terms of control.
It is suspected that the pathogen is transmitted by the yaw aphid, so you should preventively remove Giersch from the garden as much as possible. The leaves turn yellow more and more in the course of the disease, later they turn red and atrophy. It is striking that the leaf veins remain green. Bearded formations occur at the roots. these also wither with time.
4. Carrot blackness
A fungus is also responsible for this disease of the carrots.
You can recognize the carrot blackness by the fact that dark spots with a yellowish border form on the leaves. If the infestation is severe, the leaves will dry up and eventually die. If young plants are affected, the harvest may fail completely. The carrots do not develop properly when the leaves are infected by the fungus.
The carrot blackness cannot be fought directly. However, you can save your carrots from further infestation by immediately destroying infected plants. In addition, you should avoid growing carrots for at least a year, as the fungus can survive in the soil for a long time.
To prevent the blackness of the carrots, it is best to choose resistant varieties and do not plant them too densely. Cultivation in a windy location has also proven itself.
5. Black rot
This fungal infection first affects the root, which turns black. With young seedlings, however, discoloration of the leaf roots can also occur.
The infected plants should be removed immediately. To prevent black rot, make sure that the soil is dry, that there is sufficient planting clearance and that the location in the garden is windy. Nitrogen fertilization can also favor black rot.
To prevent this, no celery or parsley should be planted in the immediate vicinity of the carrots.
6. Purple root slayer
The purple root killer is also a fungal disease, you can recognize it by the thick, purple growths on the carrots. The plant quickly rots and dies. The host plants of this pathogen include, for example, beets, celery, parsley, chicory, asparagus and potatoes.
In the soil, the fungus can survive for several years and lead to new infections. Warm and constantly moist soils as well as strong weed growth favor such an infestation. Infested plants must be destroyed immediately. You can prevent this with optimal crop rotation. The cultivation of the corresponding host plants should be avoided.