How to get rid of aphids on cherries?
Summer residents who carefully care for plantings lose sight of aphid clusters on leaves and shoots. At first, they do not see it because of the small lesion (the body of the insect reaches 5–7 mm in length), and then it is too late to take action. Due to the rapid reproduction, the aphid captures new nourishing healthy areas, sucking the juices out of them with a small proboscis. Having dealt with one fruit tree, she chooses a new site for her activities. It is worth considering how to deal with it after all.
Description of the pest
Aphids are an insidious pest that seems harmless at first glance. It belongs to the superfamily of insects from the order Hemiptera. Previously, it was mistakenly attributed to the order of homoptera. Scientists have identified about 4 thousand species of aphids, of which almost 1 thousand are found in Europe. Any aphid, including black one, regales itself with vegetable juices. Unlike ordinary aphids, black ones eat leaves and shoots of cherries. It is a dangerous pest that contributes to the occurrence of diseases in it that cause anomalies in development (galls, gall-like formations).
signs
While other voracious insect pests eat fruits, trunks and leaves, leaving visible traces in their places of residence, the aphid sucks the juice imperceptibly, having chosen the back side of the leaf plate and the tops of young shoots. At first, the traces of her activities are invisible, and therefore summer residents do not sound the alarm.They start processing, noticing that the leaves of the cherry tree have curled up, and the trunk is covered with hordes of ants. They are attracted by a sticky secret - this is honeydew secreted by aphids.
Later, niello develops in the sticky secretions, and since the saliva of the insect contains dangerous microorganisms that quickly penetrate the cells of the cherry, picking up other fungal-type diseases is inevitable. "Tidbits" for cherry aphids are the underside of the leaves, growth points, young shoots, pedicels and buds. In places where black aphids appear, life leaves the tree: because of it, the leaves on the cherry will turn yellow, the buds will stop developing, or the buds will become ugly.
The reasons
There are several reasons for the defeat of cherries by aphids. Gardeners limit their care to watering and fertilizing. They forget to weed the trunk circle, and weeds are the habitual habitat of aphids. Reproducing rapidly, it infects healthy areas on weeds, and then gets to the cherry. The juices that she leaves behind attract ants. They enter into symbiosis with her: with the onset of cold weather, they transfer the larvae deep into the soil, and with the onset of heat, they take them back to succulent weeds and fruit trees.
Agrotechnicians do not lose sight of ants. The more of them, the more infected plants in the garden. During the summer, the insect breeds up to twenty generations of offspring. To prevent this from happening, the trunk circle is kept “clean”. It is necessary to weed out weeds with roots and sow calendula or marigolds near it.
Effects
Beginner gardeners do not see a serious enemy in the pest, but in vain. Each case of connivance is unique, but often it all ends with the following consequences:
- the death of cherries due to the mass distribution of the pest;
- the risk of catching other, more dangerous and untreatable diseases;
- harvesting a smaller crop than in previous years;
- acquisition by fruits of an ugly form;
- the smallness of the fruit;
- rapid infection of other shrubs and garden crops grown on the site.
Control measures
Faced with an insect only once, summer residents make every effort to get rid of it. The following comprehensive measures help in the fight against it:
- weeding weeds near the trunk circle;
- destruction of wild animals;
- the introduction of minerals to restore the immunity of cherries;
- attraction to the site of beneficial insects that feed on aphids;
- struggle with folk remedies;
- the introduction of chemicals, if the lesion is large.
Physical
Noticing small lesions of black cherry aphids, agricultural technicians are advised to start with alternative methods. At the initial stage, trap belts help. They are used to wrap the trunk of a fruit tree. Specialized stores sell special "trapping gels". But for all their effectiveness, they are expensive, quickly consumed and dry out in the summer heat.
Experienced summer residents make homemade belt traps. They take pieces of cotton material or wallpaper, cut them into strips 10–15 centimeters wide. They are wrapped around the trunk, fixing it with twine for strength. Sticky tape from flies is glued on top of them in a spiral. Due to the loss of effectiveness, homemade trap belts are changed 2-3 times per season. Ants stick to the tape tightly. The threat of the spread of honeydew, which is left behind by aphids, is over.
Summer residents are at war with ants. They look for an anthill and destroy it by pouring boiling water from top to bottom.This helps to kill the ants and aphid larvae they carry into the ant nest. Before its destruction and fastening to the trunk of the cherry belt-traps, the near-trunk circle is weeded.
Weeding eliminates the exit path of the pest at the end of processing.
Biological
In the fight against cherry aphids, experienced gardeners do not immediately use "heavy artillery". First, they plant basil, dill, marigolds, cilantro, yarrow, horseradish and other fragrant crops near the cherry. They build houses for birds and fix them securely among the cherry branches. They attract to the site by sowing marigolds, cornflowers, dill ladybugs, which will not resist the temptation and will definitely feast on insects. Washing the barrel with a strong jet of water is effective.
Folk
Not noticing the black aphid in time, biological and physical methods will not help. The cherry will wither. Agricultural technicians recommend cultivation with folk remedies: soap solution, ash-based products, herbal infusions with medicinal action, mixtures based on onions and garlic. It is done until the kidneys open. It is worth considering the most effective folk methods.
- Infusion of garlic. 0.1 kg of garlic is crushed, transferred to a 10-liter bucket and water is poured to the brim. After insisting for 2 days, the product is poured into a spray bottle and distributed over the surface of the branches.
- Infusion of onion peel. For 10 liters of water you will need half a kilogram of onion peel. After 48 hours, the cherries are processed by pouring the infusion after straining into a spray bottle. After 2 weeks, the result is fixed by repeated processing.
- Infusion of elecampane. Water is poured into a 10-liter container, before pouring 1.5 thousand grams of dried or 3-4 kilograms of fresh elecampane into it.After insisting for two days, the infusion is filtered and sprayed over the entire surface of the cherry with a broom.
- Dandelion infusion. 0.3 kg of plucked dandelion leaves are crushed, transferred to a container and poured into 10 liters of warm and heated to +40 degrees water. After insisting for two days and filtering, the insect is destroyed.
- Ash solution. Take three hundred grams of ash and carefully sift, passing through a sieve. It is poured into a saucepan, poured with water, put on fire and boiled for thirty minutes. The solution is brought to a suitable for processing, adding water to 10 liters. Once every ten days, the tree is sprayed with this solution.
- Tobacco infusion. Tobacco is steamed in water for a day. Then they dilute it with water in a ratio of one to three and treat them with cherries.
- soap solution. A piece of laundry soap is ground on a grater, dissolved in 10 liters of warm liquid and the tree is sprayed with the resulting solution.
The funds listed above are effective, but not for long - until the first rain or heavy watering. Because of this, soap or tobacco solutions are treated every 2 weeks.
Chemical
Not all summer residents use homemade products. They buy special preparations, which are divided into several groups.
- Contact. They quickly give results, as they are absorbed into the body of a small insect. It dies, and those individuals that remain produce offspring and re-damage the tree. The means of such an action include "Fufan", "Arrivo", "Karbofos".
- Intestinal. They are distinguished by great efficiency, since they enter the body along with nutritious plant juices. These include "BI-58 New" and "Confidor". There is only one outcome - the death of the pest.
- Systemic. Their validity period is up to 15 days.They work even if the summer resident watered the tree or it rained heavily. They are absorbed into the cells of the plant gradually, turning the juice into poison. The aphids feed on them and die. A striking example is Aktara.
Not all summer residents willingly use the drugs listed above, noticing a pest. They are afraid of the possibility of poisoning, since during processing it can get on other garden crops, and they will eat them. Their fears are unfounded. It is impossible to carry out processing when the cherry blossoms and an ovary appears on it. Otherwise, there is a risk of poisoning with the fruits of the tree when they ripen.
"Fitoverm"
"Fitoverm" is a biological type insecticide that eliminates aphids from the first treatment. To achieve this result, it is carried out in the early morning or evening. Choose a fine, windless day. If it rains after a few hours, the procedure is repeated. For processing, take 4 ml of the drug "Fitoverm" and 2 liters of water. After thorough mixing, the solution is poured into a spray bottle and the lower part of the plant is treated with it, directing the jet from the bottom up, otherwise the treatment will not bring the desired result.
Agricultural technicians advise using Fitoverm no more than four times per season in 7–20 days.
"Aktara"
If in early spring, before the appearance of buds or after flowering, an abundance of aphid lesions on cherries is noticed, it is necessary to treat it with Aktara. He acts quickly. Two grams of the product is diluted in a liter of water, mixed thoroughly, and then another 9 liters of water are added.
Due to the fact that the product is toxic, use it carefully. Put on rubber gloves, a respirator and carefully hide exposed skin behind clothing. "Aktara" retains its effect for twenty days.Exactly so much should pass from the moment of the last disinfection to the collection of fruits, otherwise berry poisoning is possible.
"Confidor"
Experiments show that the drug "Confidor" effectively defeats aphids. He kills her, simultaneously stimulating the leaves to grow. It is used in the southern regions of the Russian Federation without fear, knowing that it acts under the influence of high temperatures. Processing frequency - 1-2 times per season. When preparing, dissolve 2 grams of the product in 10 liters of liquid. If the lesion is large, 4 g of the drug is dissolved in the same amount of water.
Divorced "Confidor" is not stored for more than a day. If necessary, mix it with liquid soap, which guarantees the best adhesion of the agent to the sheet plate.
Insecticides defeat aphids - Iskra, Inta-vir, Karate, diluted according to the instructions.
Proper handling
When decontaminating a tree, observe the following precautions:
- chemicals are applied in the spring after the leaves appear on the fruit tree;
- fruit trees are treated with decoctions and infusions until August; they do not harm beneficial insects, pets and people;
- the tree is processed in the early morning before sunset, otherwise the young foliage on the cherry will burn during processing;
- hands and face are protected from the action of the drug by wearing gloves and a mask; do not leave open areas on the body;
- if a chemical comes into contact with the skin and mucous membranes, they are washed with cool tap water;
- processing is carried out strictly according to the instructions and do not use the drug with an expired shelf life.
Prevention
Fighting a pest is more difficult than protecting a fruit tree from it. In the off-season, the trunks of cherries and trees near it are whitened, the dead bark is removed to a healthy place. Such processing is an obstacle to the reproduction of aphids.A ladybug is attracted to a personal plot by seating nearby spicy herbs that repel hordes of aphids. Anthills are destroyed by pouring boiling water over the passages.
To prevent ants from creeping onto the cherry behind the sticky secret of aphids, “trapping belts” are fixed on its trunk.
Learn how to deal with aphids in the next video.