Diseases and pests of dill and their control with photo

Dill is an unpretentious crop and does not require special growing conditions. At the same time, there is a risk of damage to the plant by rot and dangerous insects. To prevent crop reduction, you should learn more about dill diseases and how to deal with them.

Why does dill turn yellow, blush, turn gray?

When growing dill, gardeners often face the fact that the greens begin to change color. Having wondered what to do when the dill turns yellow, you need to find out the exact reason. Color change can occur due to improper watering - greens do not accept excess moisture or, conversely, dry soil.It can also be caused by an uneven landing. It is recommended to leave a distance of about 2 cm between shoots so that the root systems do not intertwine with each other. In the case of a dense planting, the first shoots should be removed immediately to maintain spatial isolation.

The reasons why dill blushes most often lie in the increased acidity of the soil, when phosphorus in the soil content becomes insoluble. Under such conditions, the roots of the seedlings do not receive nutrients and the leaves turn red.

When green leaves turn gray, the likely problem is a viral disease. In this case, it is better to immediately destroy the affected specimens in order to prevent the spread of the disease. One of the visible symptoms, in addition to graying of the leaves, is the formation of soft rot at the very base.

Diseases of dill

Each disease characteristic of dill has individual symptoms, causes and consequences. A significant part of the diseases can be detected during an external inspection of the crop.

Peronosporosis

The risk of developing downy mildew in plants is highest with constant wet weather and temperatures around 20 degrees. The disease affects the upper part of the seedlings and, when the infection spreads, the surface of the leaves becomes yellow or brown. A visible white coating appears on the reverse side of the foliage. Over time, the sprouts completely dry out and die.

The cause of peronosporosis is a large amount of weeds and the remains of an unharvested crop in the soil. There is also a possibility of spreading the infection through the seeds. To prevent peronosporosis, it is necessary to periodically visually inspect the beds and remove weeds in a timely manner.

Powdery mildew

Powdery mildew disease, common to many vegetable crops, can also affect any variety of dill. In closed ground, the pathogen occurs in greenhouses where there are weeds, and in open ground conditions, powdery mildew occurs due to moist air. A feature of the disease is a white coating, similar to a web, consisting of the mycelium of a pest fungus. At first, only foliage turns white under the film, after which spots appear on the stems of the plant. The consequences of powdery mildew disease include the loss of aromatic and taste characteristics.

Phomosis

Phomosis disease is characterized by blackening of dill. The manifestation of infection can be detected on early shoots or in the second half of the summer period on rooted bushes. The infection affects all tissues and progresses on the affected plant for no more than 2 weeks.Spores of the pest fungus are spread by wind, through insects or parts of dead seedlings remaining in the ground. The main danger of phomosis is that the affected seedlings themselves become a source of infection.

Verticillium wilt

The causative agent of verticillium wilt is a fungus that affects the vessels of the plant. In the presence of a disease, withering bushes lose the opportunity to receive water and nutrition, since the vascular system is blocked. The primary symptoms of wilting appear in early summer, and the peak of development occurs during the period of active flowering and seed formation. The source of verticillium wilt can be contaminated soil or the use of poorly rotted manure as a fertilizer.

Cercospora

In a number of characteristics, cercosporosis is similar to phomosis and serves as a prerequisite for its development.Cercosporosis infection affects all aerial parts of dill, after which black spots form at the sites of fungus introduction. As the spores mature, a plaque forms on the spots, due to which the plants die. The cause of the disease is infected seeds and an abundance of weeds in the beds.

Black leg

When growing crops in a greenhouse or hotbed, the likelihood of black leg disease increases Due to a fungal infection in the seeds, the process of root collar rotting begins. The development of infection leads to blackening of the stems and further drying. The disease may progress before the foliage begins to open. In conditions of excessive moisture, the disease can destroy more than half of the crops.

Fusarium wilt

Fusariosis manifests itself in a change in the color of dill and subsequent wilting. The causative agents of infection live in the soil and enter the tissues with insufficient loosening of the earth. Risk factors for the development of the disease include excessive moisture and high soil temperature.

Pests

Incorrect care, unfavorable soil conditions and certain climatic conditions can lead to damage to the crop by dangerous insects. Pests lead to the death of plants and reduced yields.

Umbrella Blinds

Inconspicuous insects that eat buds and immature seeds and leave cobwebs on leaves. Significant harm is done only with large-scale crops.

Striped bug or Italian bug

A bright red bug that releases a caustic secret when threatened. The insect sucks the juice from the seeds, causing the seedlings to grow puny or die.

Aphid (lat. Aphidoidea)

A common pest affecting all crops. Small green bugs, remaining on the dill, suck the juice from the stems and leaves, leading to exhaustion.

Carrot blotch

The insect causes deformation of the leaves and leads to drying out. The psyllid can release toxic substances that negatively affect the taste of dill.

Dill Moth

Moth larvae cobweb plants and eat leaves. One generation of insects develops per season.

Carrot fly

The pest occurs when the rules of crop rotation are violated. Carrot flies eat through the stems, which causes rot and eventually wilts the plant.

Caterpillar

Several varieties of caterpillars can infect dill. Pests gnaw on foliage and stems, reducing crop yields.

Prevention and treatment of diseases

To prevent crop diseases, it is important to sow only he althy seeds and carry out disinfection before planting. For sowing, ventilated and brightly lit areas with fertile soil should be selected. If the disease has struck dill, even with the creation of suitable conditions, it will be necessary to fight with the use of specialized fertilizers.

Feeding from yellowing and drying of dill

Constant feeding of crops with potash and phosphorus fertilizers will help save the crop from disease and drying. In the case of using compost or manure, in which harmful components may remain, they should be replaced with dressings created by the factory method.

Why dill tastes bitter

Infection or insect infestation of dill can affect flavor. Often the disruption of plant growth makes the taste bitter.

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