How to deal with a cabbage fly and its larvae
Content
Methods of dealing with cabbage fly include scaring butterflies, the destruction of larvae. To combat the pest use chemicals, folk remedies. Cabbage fly parasitizes the entire warm season, its most destructive presence for cabbage in early summer,when the cabbages are just starting to start.
The appearance of the pest
The spring cabbage fly appears in late May, early June from wintered pupae. Dull gray-brown butterfly with a variety of patterns on the upper wings. Imago feeds on plant nectar, so cabbage is not harmful by its presence. Its main task is to lay eggs, and this is what the insect does. short life - 20 days.
Spring fly under favorable conditions: moisture, heat, multiplies up to 4 times per season. There is also a summer cabbage fly, which is born in the beginning of July, during the summer time give life new generation only once. The pest in the pupal stage hibernates. A photo of a cabbage fly is presented below.
Worm-like legless larvae yellow, white are born from eggs after 10 days. Initially, they gnaw through the skin of the root, are embedded in the root system. Rarely caterpillars damage stems, leaves.
On a note!
It is possible to determine the presence of pests by weak growth of seedlings, poor formation of heads. With a strong infection, the plant dies. If the larvae are few, the cabbage grows, but does not have a presentation.
Choosing the right method
Fighting with a cabbage fly and its larvae is allowed folk remedies or store preparations. However, you must consider the variety of cabbage, the growing season.
- For early varieties to apply the poison should not be.
- Processing of medium grades is allowed in the seedling planting phase, then folk remedies are used.
- In late cabbage it is possible to use insecticides, but the last treatment of the plant should be carried out no later than 25 days before harvesting.
Chemical products allow you to get quick results in a matter of days, while the use of folk remedies requires systematic repetition. It is necessary to spray or water the culture regularly every 3-5 days. The effectiveness of the procedure is evidenced by the rapid growth of the plant, the setting of the heads of heads without deformation. Otherwise, the fight must continue.
On a note!
Folk remedies are allowed to use at any stage of the growing season of the plant, a combination of several recipes is allowed. The effect of the chemical drug is maintained when watering up to 60 days, spraying - 30 days. It is necessary to carry out the procedure in dry weather in the morning or in the evening.
Folk remedies
You can get rid of cabbage flies insect repellent substances. Scaring away butterflies will allow you to avoid contamination of the culture, will not allow the laying of eggs.
- Tobacco. Powder sprinkled beds, cabbage leaves. For spraying prepare the solution. Tobacco is poured with water, left for a day, they add soap, salt. Either day cigarette butts insist, process the plant, water the soil.
- Ammonia. The struggle with liquid ammonia additionally strengthens the seedlings, stimulates the development of the root system, makes the culture resistant to the attack of pests. Use the solution for spraying the plants, watering the soil. In the first case, the solution should be less concentrated - 10 ml of ammonia per 10 liters of water. In the second - 60 ml of alcohol in a bucket of water.
- Cinnamon. It has a strong, persistent odor that scares away not only cabbage flies, but also other pests. Powder sprinkled beds, laid out under the seedlings of cinnamon sticks or sprayed with cabbage solution. Cinnamon is poured into the water, laundry soap is added.
On a note!
If you need to get rid of the larvae that damage the roots, use wood ash. Sprinkle the beds, pour water abundantly.Either the solution is prepared initially - the ashes are added to the water and thoroughly stirred. Poured directly under the seedlings or formed heads.
Algorithm proper cultivation of culture
The development of cabbage flies occurs almost all summer, the insect is constantly changing, changing lifestyles. To finally get rid of the pest on the beds, to prevent re-infection, you need to follow certain rules:
- To plant seedlings in the beds where garlic and onions grew last year.
- The plant is recommended to initially soak for a few minutes in a chamois of mullein, clay, water, Hexochlorane. 150 g of the drug is diluted with 10 liters of liquid.
- It is better to plant cabbage earlier, so that before the appearance of persistent heat the culture has had time to get stronger, to resist the attack of the fly caterpillars.
- The use of wax paper as mulch resists the penetration of the larvae to the roots, which ensures the healthy formation of the vegetable and the active growth of the plant.
- If the mulch is not used, periodically loosen the soil in the beds with cabbage. In the process, lay eggs, which are on the surface.
- 3 days after planting, the plant needs to be treated with a scaring solution. They use ammonia, lime, naphthalene, camphor, tobacco.
- For the development of additional roots of the plant need to spud.
- After harvesting, remove all residues of vegetable, burn, dig up the soil.
If the larvae during the growing season of the culture had time to gain a foothold in the roots, it is recommended to use chemicals, taking into account the time of ripening of the vegetable. This method is effective, but requires compliance with certain rules.
Professional tools
To scare away and destroy a cabbage fly, the plant is sprayed with a weak solution of Hexochlorane or 5% DDT. 100 ml of product are used for 10 l of water.
Chlorophos is used against settled larvae. A proven insecticidal drug helps to cope with the pest almost a day, protects the plant from re-attack for about 2 months. It is made in the form of powder, emulsion, paste. For 10 liters of water consumes 15-20 g of the drug. A solution in the amount of 1 l is enough for high-quality watering of 5 bushes. Similarly used emulsion Thiophos.
During the laying period it is recommended to treat the soil with Bazudin. At 100 square meters. m. consumed 10 g of funds. In the greenhouse, seedlings before planting in open ground is recommended to pour Aktar solution. For 10 liters of cold water is 3 g of insecticidal drug.
Cabbage fly can constantly migrate from one garden to another, so methods of prevention must always be remembered. Near cabbage beds, it is recommended to plant onions, garlic, calendula, marigolds, peppermint, spruce and pine branches around the perimeter of the plot. Or, during irrigation, add a few drops of citronella, lavender, and mint essential oil to the water. You can get rid of pests in the spring chicken droppings, using it as a fertilizer.