How To Treat Cabbage, The Leaves Of Which Are In Holes? Why Did The Holes Appear And What Kind Of Pest Is It? What Should Be Done With Seedlings? Folk Remedies And Chemicals

2024 Author: Beatrice Philips | [email protected]. Last modified: 2024-01-18 12:09

Cabbage is one of the most popular crops grown by gardeners on their plots. This vegetable is used in many dishes of Russian cuisine, pickled, boiled, stewed and fresh. But before you can crunch a lot of cabbage leaves, you need to grow and harvest a healthy crop. Often, when growing heads of cabbage, gardeners face the problem of spoiling vegetables. This is mainly due to the defeat of pests and infection with diseases. Insects leave different-sized holes on cabbage leaves and are able to destroy plantings in a short time. Given that they are prone to active reproduction, you need to act as soon as riddled cabbage leaves are found.

Reasons for the appearance

Insects that have settled in the beds not only damage the appearance of cabbage heads, but also prevent the vegetable from developing normally. Cabbage affected by pests resembles a leaky sieve . First, several holes appear on the outer leaves. It is during this period that you need to move on to active actions so that a small nuisance does not become a big problem. If the moment is missed, soon the whole head of cabbage will acquire an "openwork" design of the leaves. Different types of pests can start on cabbage, which can be recognized by traces. Given the state of the garden and the weather conditions, there is a chance to guess who exactly operates in the garden. During rains, with high humidity and wet soil, the bet is on slugs, and in a dry, sultry season, the suspicion falls on caterpillars and other small insects in the spoilage of cabbage. It is necessary to carefully examine the topsoil and the surface of the leaves from both sides. A magnifying glass can be used if necessary. Determining the type of pest will help you choose the most effective method for saving cabbage.

If holes of unequal size have formed on the leaves, this indicates a lesion by leaf-eating or sap-sucking insect species . Parasites pierce or gnaw through the flesh of the leaf plates, leaving traces of their stay on them.

The activity of insects often leads to infection of the culture in the future. It is possible that cabbage will die from a virus, fungus or bacterial infection.

Several types of insects often sin against seedlings.

Slugs

They are indicated by specific traces of mucus appearing on the surface of the leaves. In the dry state, the traces acquire a silvery hue, which is difficult to miss, even standing over the cabbage, erect in full growth. Another characteristic sign of cabbage damage by such a pest is the appearance of large holes throughout the leaf area.

Puncture sites form an excellent environment for plant infection with fungal and viral bacteria, which provoke wilting of leaves and the death of the entire head of cabbage. Therefore, slugs are considered especially dangerous for garden cruciferous crops.

Caterpillars

As food, cabbage seedlings are very attracted to butterfly larvae. Scoops, whites and cabbages eat leaves to the "skeleton". More adult individuals "perforate" the heads of cabbage, making moves for themselves. Well-visible caterpillars, the appearance of which differs depending on age, are considered young individuals of the cabbage butterfly . Initially, it is a light green color with dark warts all over the body, and later the color becomes richer, and yellowness appears.

Young individuals, spreading through the culture, eat the pulp along the edges of the lower part of the leaf with appetite, leaving a sticky mark on their surface . Older individuals prefer the upper parts of fresh leaves. They treat themselves to them until they reach the stump. As a result, only fleshy veins remain from cabbage leaves. Caterpillars develop in a favorable environment for this.

At high temperatures and extremely low humidity, these pests do not appear on the sites.

Cabbage scoop

Adults of this insect species are not as dangerous as their previous generation - gray-brown caterpillars. They actively devour cabbage leaves. It is natural for one female to lay 600-700 eggs within 10-14 days, of which voracious caterpillars appear just two weeks later. Just a few clutches - and young plants will become a sieve, and there will be nothing to save.

Cruciferous bugs

Small bugs (up to 1 cm) with a characteristic variegated black and red pattern on their backs. They also actively harm the cabbage crop by sucking the vegetable juice out of it. With the help of a thin proboscis, the bugs pierce the flesh of the leaf, after which a tiny hole with a yellow edging appears in this place . By these signs, you can determine that the plant is infected with cruciferous bugs.

Cruciferous fleas

The size of the flea body does not exceed 3 mm in length. But they are also dangerous. The backs of small garden "dirty tricks" are painted black (gray), and the hind legs are equipped with a jumping apparatus. Bouncing insects feed forces with the sap of the leaves. After being attacked by cruciferous flea beetles, cabbage leaves are literally all in holes . Their larvae are also considered dangerous, which move along the stems to the root area, eating tender processes on the sides. The flea actively eats the leaves and shoots of fresh seedlings, directly scraping them, and from the matured larvae, damage is caused to the root system of a young cabbage seedling.

With a massive attack of small reptiles, tender heads of cabbage simply die in 3 days.

Cabbage fly

Gray winged pests appear on cabbage plantings in spring. Their larvae pose a threat not only to the plant itself, but also to its rhizome. Cabbage flies are subdivided into spring and summer flies. The first ones appear en masse in late April - early May, the second ones fill the site from mid-June, when the temperature on the street is stable within +18 degrees.

Cabbage aphid

Despite its tiny size, this insect makes holes in cabbage leaves no less than other parasites. Aphids not only suck out all the juices from young leaves, but also attract ants to the site, which entails a decrease in the yield of vegetable crops.

It is possible to find a small insect only after a careful examination of the heads of cabbage, since due to its miniature size, a greenish body with a grayish waxy bloom helps whole colonies to perfectly camouflage on leaves.

What to use?

There are several ways to deal with insects that perforate cabbage. Some of them can scare away pests, while others are aimed at exterminating them . The vegetable grower will have to decide on a suitable method of influence, evaluating it according to the advantages, disadvantages specifically for his situation.

Chemicals

If the seedlings have moderate lesions, you can treat the beds with biological preparations. These new generation insecticides are safe for humans. It is unusual for them to accumulate in plants. At the same time, they do not act as quickly as the chemical agents that are used in critical situations, when there is a large-scale pest infestation. The instructions for biological products always indicate the allowable period between the processing of the vegetable crop and the harvest. You can try to deal with pests in the garden using Fitoverm, Lepidocid, Biostop or Bitoxibacillin.

If the cabbage has leaky leaves as a result of severe insect damage, then you will have to fight with radical methods. Here you can not do without fast-acting drugs based on chemicals.

White cabbage, Peking cabbage or other types of cabbage will have to be sprayed with insecticides several times. Because the larvae of the insect pests hatch gradually. To prevent the re-development of parasite colonization.

When working with chemicals, personal protective equipment is indispensable. Chemical treatment should be carried out according to the instructions. It provides all the necessary information regarding the dosage and consumption rates of the pest control solution. Manufacturers also indicate how long it will take to re-spray the affected cabbage.

Such chemical agents as "Decis Profi", "Aktara", "Fox", "Karate", "Pochin", "Ivermek", "Fufanon", "Dimilin", "Diazinon", "Lepidocid" can quickly help in this struggle., "Ratibor"

The most effective remedy for slugs is Thunderstorm . The drug can be purchased at a very budgetary price in many garden stores. The advantage of "Thunderstorm" is not only in cost, but also in the fact that the composition is fatal exclusively for slugs. It is recognized as safe for birds and animals.

To combat caterpillars, it is recommended to use Triflyurex, Butizan, Slender or Decis extra poison . All this will have a fast-acting powerful effect on the destruction of large colonies of this species of insects.

Actellik, diluted in an amount of 20 ml per 10 liters of water, helps well against cruciferous flea beetles . With such a solution, it is necessary to process the sheet surface. The same can be done with Aktara or Bankol. The proportions will be similar to those indicated for Actellik.

From butterflies, which are in the habit of making holes in cabbage, the same "Actellik" will help, or you can use a solution of "Karbofos", "Decis", "Diazinon" or "Fox".

From aphids, which often settle on cauliflower, "Tanrek" and "Iskra" help gardeners

It must be remembered that insects get used to substances in the composition of chemicals. Therefore, it is necessary to try products that differ in active ingredients every year.

It should be noted that cabbage accumulates harmful substances, so the use of chemical insecticides is justified only in critical situations. It will be rational to prevent the assassination of pests than to fight them later.

Folk remedies

Most gardeners on their plots prefer to use insect repellents prepared according to folk recipes. These safe methods are effective against various types of parasites that invade cabbage. A variety of products can help protect your cruciferous crops.

Against the cabbage fly

• Decoction of celery stalks . For him, 4 kg of fresh raw materials must be crushed and filled with 10 liters of water. Put water on fire and boil for half an hour, then set aside for a couple of hours to settle. After 2 hours, strain the cooled broth and dilute with 2 liters of water.
• Naphthalene with the addition of sand and ash . One part of naphthalene must be mixed with 5 parts of sand and ash. Sprinkle the prepared mixture on the soil around the cabbage, distributing a dose of 30 g for each bush.

Against slugs and snails

• Mustard with ammonia . Add 2 tbsp for 1 liter of water. l. ammonia and 15 g of mustard powder. For shellfish, it is better to spray cabbage in the late evening.
• Hot peppers . Grind the main raw materials in an amount of 100 g in any way and pour 1000 ml of water. Soak peppers in water for 2 days. Then strain the pepper solution and dilute in proportion to 0.5 cups of 10 liters of water. To better cover the foliage with a solution, it is recommended to add a little soap solution to the water.
• Soda etchant . This recipe involves adding 20 g of laundry soap to 10 liters of water with 3 tbsp. l. soda ash. The components must be mixed until dissolved. Cabbage plantings are sprayed in the morning so that the product can dry completely until the evening.
• Separate half of the watermelon from the pulp . Make 3-4 holes 1-3 cm from the edge of the peel. In the evening, put the leaky watermelon rind upside down on the site. In the morning, several dozen slugs will gather under it, which will be easy to collect.
• Another way to get rid of shellfish without poisoning - arrange an obstacle course for them from broken shell rock, chips or brick chips.

This material scatters around the beds, and soft-bodied pests will no longer be able to get to the coveted greenery.

Against cruciferous fleas and bedbugs

• Fir oil . The pronounced aroma of fir in irrigation water (15 drops per bucket) will scare away small pests from planting.
• Birch tar . First, it must be mixed with liquid soap (1 tsp. Tar + 1 tsp. Soapy mass) and dissolved in 1 liter of slightly warmed water. Spray in the morning.
• Dandelion infusion . Rinse flowers with leaves together with roots and grind in a meat grinder or blender. 500 g of mass per 10 liters of water with the addition of 1 tsp. liquid soap. Use this mixture to process the leaves in the morning or in the evening.
• Valerian against attacking insects . Dissolve one bottle in 3 liters of water. It is advisable to process cabbage in cloudy weather.
• Anti-flea soap . 300 g of laundry soap is crushed (maybe not into small shavings) and dissolved in warm water with a volume of 10 liters. You can use 400 ml of liquid soap for quick action during preparation. You will have to “soap” the leaves in the morning.

From cabbage flea

Garlic infusion . You will need 3 heads of raw materials, potato or tomato tops. Finely chop the components or twist in a meat grinder. Pour the resulting mixture with a bucket of water and leave to infuse for 2-3 days. Strain the finished infusion, add 50 g of shavings of laundry soap, mix thoroughly. When the soap has dissolved, spray all the leaves.

You will need to repeat the procedure twice a week until the pests are completely gone.

Against caterpillars of cabbage scoop and whiteworm

• Wormwood broth . 500 g of raw materials pour 5 liters of boiling water and put on a small fire. Cook for 30 minutes, and then leave for 24 hours under the lid. Strain the concentrate and dilute 1: 1 with water. In the finished product, dilute 100 ml of liquid soap and process the cabbage.
• White color signals to white butterflies that the masonry site is already occupied by a competitor . On branches or sticks, you need to fix white disposable cups or pieces of polyethylene from white bags. White flags are placed in the spaces between plants.
• Sweet revenge . Dissolve 200 g of sugar in 10 liters of water. This will attract ants to the site, which feed on caterpillars and do not disdain slugs.
• Beer traps will bring good results . Pour the malt-flavored liquid into a flat container and place on the garden bed.
• Ash infusion with tar shampoo . Add 2 tbsp for 10 liters of water. ash and 1 tbsp. l. shampoo. Insist for a day.
• Infusion on crushed tobacco leaves . Pour 200 g of dry leaves into a 10 l saucepan with hot water. After 3 hours, strain the solution, add liquid soap to it and start processing the cabbage.
• Soda with flour . Mix them in equal amounts and sprinkle on the seedlings.
• Pepper with ash and tobacco dust also suitable for dry cultivation of cabbage leaves and soil under bushes.

From butterflies

• Young shoots should be covered with a non-woven cloth on top, restricting access to cabbage for pests. Once the leaves have hardened, the material can be removed.
• Intoxicating treat. Place jars of fermented jam, compote or kvass near the crops. Insects will flock to eat, after which they must be immediately removed from the site.

Prevention measures

Pests attack areas in early spring, spoil the decorative appearance of young shoots, which do not set well in difficult conditions. Insects hibernate in the upper layer of the soil, and when they wake up, they begin to eat weeds . When agronomists transfer seedlings to the garden, young plants are also used as food for parasites. The best defense against an attack on the garden of intruders will be prevention.

As soon as the seedlings move to the garden bed, it is worth covering the plantings with a cloth or fine mesh . If this is not possible, it is worth spraying the seedlings with a solution of soap and ash. Ash is also sprinkled on the ground around each plant. This will protect the vegetables from cruciferous flea infestations. Will scare away pests and the spicy smell of some herbs. A good neighborhood for fresh cabbage can be: marigolds, calendula and fennel. In addition, cabbage beds can be placed close to tomatoes, basil, mint or onions.

And also such measures will be effective:

• do not plant cabbage every year in the same garden;
• weed the soil often, so nests with dug holes of insects will not be strengthened in the upper layer of the soil;
• water the seedlings moderately;
• plant seedlings early - in this case, the head of cabbage will be tied up before the pests become active;
• destroy all weeds on the site.

It is advisable to inspect plants more often for the appearance of pests. Insects are not always easy to spot, but if the leaves are covered with holes, it is important to immediately begin exterminating intruders. It is unacceptable to hesitate, otherwise all the landings will soon be destroyed. Insect populations are increasing at a rapid rate.

Even with folk remedies, you can cope with defeats at the initial stage. When they prove to be ineffective, it's time to start implementing the recommendations for the use of biological or chemical insecticides.