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Diseases and pests of parsley can significantly reduce crop yields. In order to start the treatment of plantings in time, it is first necessary to study the main symptoms.
Parsley diseases and their treatment
Parsley diseases can be divided into two categories:
- fungal – appear most often on poor soil and with insufficient care;
- viral – diseases are carried by insects, and infection can also occur in close proximity to other plants.
Many parsley diseases respond well to treatment in the early stages. In order to start spraying plantings in time, it is necessary to regularly inspect the bushes for rotting of the stem or spots on the leaves.
Mučnistaâ rosa
Photos of leaf parsley disease show that a dry white-gray coating appears on the plant in the first stages. First, the lower plates suffer, then the disease spreads higher. At the same time, the plaque darkens, becomes brownish-brown and thickens, the leaves begin to dry out and fall off.
Powdery mildew infects parsley in hot, dry weather and with an excess of nitrogen in the soil
Powdery mildew spreads rapidly from plant to plant and can cause serious damage to crop yields. When a characteristic plaque appears, the affected bushes must be removed. The remaining plantings are sprayed with Quadris or blue vitriol for prevention purposes.
Rust
Fungal disease is manifested by convex yellow-brown spots on the lower leaves. For the first time, rust symptoms occur in early summer, by autumn the marks darken, capture the entire plant and merge with each other. Parsley begins to dry out and wither.
Rust is especially dangerous because its spores overwinter well in plant debris and can infect new plantings. If a disease is detected, it is necessary to eliminate the affected parsley from the site and treat neighboring bushes with Fundazol. With the onset of autumn, it is important to remove all debris from the beds and loosen the soil to prevent the reappearance of the fungus.
Parsley rust usually develops in damp, but fairly cool weather.
Fomoz
Fungal disease develops on parsley at a temperature of about 15 ° C and high humidity. Leaves gray-brown spots on the veins of the leaves. If you dig up parsley, then on its root crops you can find depressed putrefactive areas.
Parsley infected with phomosis becomes especially attractive to pests
The fight against the fungus in the early stages is carried out with the help of copper sulfate, Bordeaux liquid or Fundazol and Quadris preparations. To prevent the disease, it is recommended to process planting material in a light pink solution of potassium permanganate and follow the rules of crop rotation.
Stolbur
Phytoplasma disease of parsley can be recognized by the reddening of the leaves. First, a dark bright rim appears along the edge, and then the entire plate changes shade. Parsley becomes unfit for food consumption, the emerging seeds cannot be used for crop propagation. Under the influence of stolbur, the plant dries up and eventually dies.
Stolbur especially often infects parsley at the end of summer, and the cicada disease is tolerated.
It is almost impossible to cure plantings affected by phytoplasmosis. The struggle is carried out in a preventive manner – they pickle the seeds, weed out the weeds in the beds and do not allow the bushes to thicken. Since stolbur is carried by insects, it is necessary to protect the plant from pests.
Black rot (alternariosis)
Fungal disease affects parsley roots, which are covered with black spots. In some cases, the disease rises up the stem. The taste of greens noticeably deteriorates, the root system begins to exfoliate, and the bushes die.
Greens affected by alternariosis quickly turn black
Since the disease develops mainly underground, it is very difficult to cure the culture in time. Usually, the affected bushes are simply removed, the remaining plants are sprayed with fungicidal preparations and the intensity of watering is reduced. Alternariosis prevention is the use of high-quality planting material. So that root crops do not suffer from the disease after harvest, they must be stored in a dry, darkened room at a low temperature.
Septoria (white spot)
White spotting can be recognized by small light marks with a dark rim on the leaf plates of the plant. Gradually, they spread throughout the bush, darken and become brownish, the culture eventually dries up.
Septoria usually appears at the end of summer in warm weather, spores of the fungus are carried by wind and rain
Spray parsley in case of illness with systemic fungicides. The best prevention of white spotting is to sow high-quality, disinfected seeds in neutral or slightly alkaline soils. So that the spores of the fungus do not overwinter in plant debris, in the fall, all garbage from the beds is removed and the soil is carefully dug up.
Pied dwarfism
Parsley disease is of viral origin and is spread by harmful insects. The leaves of the plant decrease in size and are deformed, turn pale and turn yellow at the edges.
It is impossible to cure motley dwarfism, but regular weeding of the beds is a good prevention of the virus. For protective purposes, the culture is treated with Bordeaux liquid and insecticides to increase immunity and eliminate insects.
Variegated dwarfism of parsley provokes the degeneration of culture
Jaundice
Another viral disease leads to the fact that the leaves of the culture quickly turn yellow, and the stems are deformed and begin to bulge in different directions. Bushes become like sloppy brooms. The taste and benefits of greens are greatly reduced.
To prevent jaundice, it is recommended to grow varieties resistant to the viral disease.
If symptoms of jaundice appear, the affected parsley must be removed from the garden. Neighboring plants can be sprayed with Bordeaux liquid or blue vitriol – these products do not cure the virus, but protect the bushes prophylactically.
Parsley pests and their control
Parsley in the garden suffers not only from diseases, but also from parasitic insects. Pests begin to feed on the plant from early spring and can completely destroy the crop.
Melon Caviar
The melon aphid is a very small insect with an egg-shaped black or green body. It reproduces in huge colonies and poses a great threat to the culture, since it sucks plant juice from it.
You can get rid of aphids on parsley in the first stages by spraying with soapy water or infusion of onion peel. To prevent the pest, it is recommended to plant the crop in well-ventilated areas and periodically thin out the bushes. Fighting aphids on parsley with chemicals should be done only with severe damage. Insecticides are good at killing pests, but they can also kill beneficial insects.
The melon aphid lays eggs on parsley every two weeks throughout the season.
carrot fly
A small black insect with a reddish head and transparent wings reaches only 5 mm in length. It harms parsley both at the larval stage and in adulthood, feeds on the stems and leaves of the culture. The latter, as a result, are covered with small ulcers and change color to dark purple.
You can get rid of the carrot fly with the help of drugs Aktara, Arrivo and Fitoverm. From folk remedies, onion, garlic and tomato infusions have a good effect.
Carrot fly begins to harm parsley in mid-May
The stem nematode
The nematode, which is a long thread-like worm, appears on parsley in early summer. Under the influence of the pest, thickenings form on the stem of the culture, the shoot is bent and stops growing, and chaotic stripes and spots appear on the leaves.
It is impossible to save bushes affected by the stem nematode, so they are simply destroyed. Healthy plants are treated with HOM to prevent the pest.
The stem nematode is difficult to recognize in the early stages due to the fact that it lives inside the stem
Carrot blotch
The insect does not exceed 2 mm in length, has a yellowish-green body, membranous wings and large red eyes. It feeds on parsley juice and slows down its development, the leaves of the culture curl, and the root hardens, dries and gradually collapses.
Pest control is carried out with the help of Tsimbush and Aktellik preparations. With a weak lesion, plantings can be treated with a home-made soap and tobacco solution. When using chemicals for treatment, spraying should be stopped no later than a month before the collection of greens or fruits.
To protect against carrot flea, parsley should be planted away from conifers and wild carrots.
preventive measures
Some diseases and pests of parsley are difficult to eliminate. Therefore, special attention must be paid to prevention – it greatly facilitates the care of the culture:
- Before planting, plant seeds should be treated with a light pink solution of potassium permanganate. The tool reliably kills microorganisms and fungal spores, and also increases the immunity of parsley.
- When growing a crop, crop rotation must be observed. Parsley should not be planted in the ground after carrots, and it is also not recommended to sow it in one place for two years in a row. It is best to place the culture where cucumbers, tomatoes or berries used to grow.
- Prevention of parsley diseases allows compliance with the correct agricultural technology. Bushes need to be watered only as the soil dries up, so as not to provoke waterlogging of the soil. After adding moisture, the earth is loosened to improve the access of oxygen to the roots.
When growing parsley in a greenhouse, you must follow the same rules of prevention as in open ground. The air temperature in the greenhouse should not exceed 20-23 ° C, plantings must be regularly ventilated to avoid excessive moisture.
Conclusion
Diseases and pests of parsley can seriously impair the nutritional quality of the plant and even completely destroy the crop. When breeding a crop, plantings should be regularly inspected and treatment should be started immediately if suspicious spots, holes or deformations are found on the leaves.
