How to get rid of diseases and pests of carrots?
A rich and healthy harvest largely depends on the quality of land cultivation, the cultivation of beds, and the correct collection of vegetables. Among other things, the protection of crops from various pests and diseases plays a significant role. Carrots, like other garden plants, are prone to ailments and often suffer from insect attacks. Therefore, it is recommended to approach its cultivation with all severity. We will talk about the most common diseases, insects and measures to combat them in our article.
Diseases
Often, carrots are affected by putrefactive processes that occur due to a high level of moisture in the soil and frequent temperature changes. There are several types of fungal diseases.
- Dry rot (phoma). Most often, this fungus manifests itself at the final stage of growing carrots. It is characterized by dark brown elongated spots that form on the leaves. As the plant grows, the root crop becomes infected. Dry rot is dangerous even after harvest. Its appearance is typical for warm storages, where the room temperature reaches +5°C. If you do not notice in time, then the root crops can completely become unusable.
- White rot. This type of fungus appears due to non-compliance with the rules of storage, excessive soil moisture or the settlement of beds with weeds. It happens that infection occurs when the soil is fertilized with manure.The first signs of white rot are a slippery coating on root crops, while the vegetables themselves lose their elasticity and become softened.
- Gray rot. This fungus often appears in root storage areas. The disease manifests itself in the softening of carrots, spots of gray wet plaque appear on it over time.
- Felt rot (rhizoctoniosis). This fungus can appear at any time during the growth of carrots and even after harvesting vegetables from the beds. It is easily recognizable by brownish dents with a “felt” brown coating. The fungus can penetrate to the core of the carrot, as a result of which the vegetable completely rots in a short time. The rotting process is accelerated in conditions of high humidity and frequent temperature changes.
- Black rot (alternariosis). A fungus of this species can also appear at any stage of root ripening. In young crops, the stems first turn black, and over time, the leaves begin to curl, turn yellow and eventually completely dry out.
Petioles lose their strength. Pustules form on the root crop. It is worth noting that black rot can be transmitted in two ways: through soil and seeds.
- Wet rot (bacteriosis). Another of the most common fungi that probably every gardener has come across. With the disease, the first symptoms - yellow spots - appear on the lower leaves of plants. As the leaves grow, they darken, but the yellowish outlines still remain noticeable. On the green "tops" of carrots, yellowish or whitish dots form. The stems are covered with brown spots or stripes. Ulcers or depressed brown spots appear on root crops. With a massive defeat of the beds, a characteristic purulent smell will appear.
Important! Bacteriosis cannot be cured, all infected plants should be removed immediately. Wet rot can only be fought with preventive methods: keeping carrot seeds in hot water and treating with a special agent.
- Brown spotting. The fungus of this species affects mainly the tops. On young shoots it appears as stripes of a dark brown hue. On the grown leaves, light spots are first visible, which then turn brown. The purulent process can be provoked by the humidity of the soil and air. As a result, the death of leaves and inhibition of the growth of root crops.
- Cercosporosis. Like many other purulent processes, it is provoked by a high level of humidity. The first stage of the disease is characterized by the appearance of brown formations with a light center and dark edges. Over time, the formations grow, while the edges of the leaves lose their elasticity, curl and die. Cercosporosis also affects root crops. Carrots of an infected bush grow poorly, become wrinkled.
- Powdery mildew. Often, the fungus settles on plants that have a lack of nutrition or those that are grown in conditions of high temperatures. Infected stems lose strength and elasticity. A progressive disease leads to the death of the leaves.
Root deformation
This is a serious problem for beginner gardeners. There may be several reasons:
- Densely sown seeds. You can solve the problem by the usual thinning, which must be carried out after the appearance of the first leaves on the shoots. Otherwise, the root crop will be limited in growth, and the curvature of the root crops will begin. Of course, from this its taste properties are not lost, but it is almost impossible to clean a vegetable for cooking.
- Insufficiently deep plowing of the soil. In this case, the root crop simply does not have enough strength to break into the unplowed soil, and deformation will begin.
Harmful insects
Huge damage is caused by pests that eat leaves and roots of carrots. In our latitudes, the following types of insects are considered the most harmful.
- Carrot fly. It is the most common garden pest. Its small body, shimmering with a metallic sheen, is easy to notice against the background of the leaves. The larvae have time to appear immediately after the first leaves hatch.
The carrot fly does not just eat up the root crop, but makes deep minks in it. In addition, carrots begin to taste bitter, become tough and tasteless. The affected areas begin to rot and it is categorically not recommended to use such carrots.
- Carrot leaflet. This insect has a small light green body (up to 2 mm in length) with transparent wings, reddish eyes and long thread-like whiskers. It feeds on carrot juice, as a result, the growth of the root crop slows down, its taste changes. Infection of a culture is easy to determine by the appearance of the leaves: if they are twisted and “terry” like parsley, then the plant suffers from psyllids.
- Carrot aphid. Aphids like to settle on the back side of the leaves, feeding on their juices. Over time, the leaves curl, stop growing, which undoubtedly reduces the yield of the crop. Aphids come with and without wings, and it is easy to recognize them by their green abdomen, black chest and head.
- Carrot moth. It is a bright butterfly with dark brown and grayish-pink wings. Adult butterflies lay eggs, from which caterpillars are obtained around mid-July. Caterpillars actively secrete a cobweb, which entangle umbrellas and inflorescences of plants.This leads to damage, rotting and death of the leaves.
- Gall nematode. Another insect that causes irreparable harm to the root crop. These light worms live in the soil and feed on the pulp of the root crop. They settle on the very root, after which it can not be eaten.
- Medvedka. A large insect with a compacted shell and strong front jaws. His place of residence is the soil, where he actively harms the stems and roots of the plant. The beds, in which the bear likes to arrange underground passages, also suffer from it.
- Wireworm. Another active worm pest is the larva of the click beetle. Gnawing a vegetable, arranging small moves in it. A huge minus of root damage by wireworms is the rapid process of rotting vegetables.
- Naked slug. Another common pest, a fan of wet beds and compost heaps. Both young and mature individuals are dangerous. They gnaw holes in leaves and root crops, they can destroy even seeds that have not yet sprouted. They are easy to find in the ground, under rotted leaves or under rocks.
- Winter owls. Brown caterpillars can be a big problem for the crop. They do not disdain leaves and their petioles, and especially love the pulp of a vegetable. As a result of their raids, carrots dry out and die, and the root crop itself becomes tasteless.
Funds
Despite the variety of diseases and insects, today there are many means that can save carrot beds in the shortest possible time. A wide range of chemicals is on sale, here are just a few of the most popular.
- "Corado". Differs in long action, destroys a carrot midge and its larvae. Sun and rain resistant. An ampoule of the solution is diluted in a bucket of water and the beds are sprayed.
It is recommended to evenly treat carrot leaves with the substance, avoiding contact with neighboring crops. It is not recommended to spray against the wind. The drug is dangerous for bees and fish, therefore, if there are ponds or an apiary nearby, it is recommended to limit the use of the solution.
- "Actellik". This drug is referred to as insectoacaricides, it helps to get rid of not only insects, but also ticks. Widely used for gardening and gardening. It differs in that it is able to eliminate insects living even in hard-to-reach places. It is recommended to spray carrots only 2 times per season.
- "Decis". This drug is effective in the fight against midges, ants, bedbugs, cockroaches and even mice. It affects the nervous system of insects and begins to act within an hour after spraying. The granules should be diluted according to the manufacturer's recommended standards, mixing thoroughly before application.
- "Bazudin". A remedy for wireworms, bears and other insects that live in the soil. Presented as a granular powder, 1 sachet is enough to spray 20 square meters. m. It has a strong paralytic effect on insects.
- "Falcon". A preparation for the fight against powdery mildew and other fungal diseases. It has a triple action: curative, preventive and guiding. It is harmless to other garden crops, bees and the entire environment.
How to fight?
It is better to start the fight against fungus and insects even before sowing. Experienced gardeners prefer to use more practical methods. For example, you can mulch the beds with freshly cut grass or a mixture of grasses with sawdust. Mulching will not only protect against unwanted insects, but also retain moisture in the ground, which is especially important in dry summers.
Well help and folk remedies. Periodically, you can treat the beds with a decoction of tomato tops, infusion on orange peels, or sprinkle them with tobacco dust. It will not be superfluous to water the carrot rows with an infusion of herbs: chamomile, burdock, yarrow.
In the fight against slugs, you can use a 10% solution of kitchen salt. Some gardeners arrange a real hunt for slugs, luring them with sweet compote or jam in small plastic containers. During the night, several large individuals run into such a container at once.
Near the carrot beds, you can plant dill, tagetis, onions - they will scare away the carrot midge. In the fight against the fungus, drugs based on fungicides are used - Quadris, Trichodermin, Gliocladin.
Prevention
It is better to take care of the harvest in advance. It is important not only to grow healthy carrots, but also to take care of their proper storage. A few preventive measures will help protect carrots from insect attacks and various diseases.
- It is necessary to carry out timely treatment of crops with insecticide solutions.
- For carrot beds, it is best to use organic fertilizers. Minerals contain sugars and amino acids that attract pests.
- During weeding, carefully inspect the leaves for defects and damage.
- It is better to dig up carrots in dry, calm weather, without overexposure in direct sunlight. The leaves are cut off, leaving a small "tail" at the root.
- All harvested tops and diseased root crops are burned.
- Basements and cellars are regularly disinfected for winter storage of vegetables. For this, the premises are dried and fumigated with sulfur, the walls are whitewashed with slaked lime.
- It is better to store carrots in a dry form, sprinkled with sand or pollinated with chalk.
- Planting carrots in the same place for several years in a row is not recommended.
- After harvesting, the soil must be dug up.
Ways to control pests of carrots are shown in the following video.