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The rose leafhopper is a dangerous pest of roses, apple trees and many fruit and berry crops. It gnaws through the surface of leaves and sucks out plant juices. Bacterial, fungal and viral infections can penetrate through these wounds, and complete death of the bush is possible. Therefore, experienced gardeners recommend not only treating affected plants, but also carrying out preventive work every year.
Description of the rose leafhopper with photo
The rose leafhopper (Edwardsiana Rosae) is a small insect from the order Homoptera. Distributed everywhere in nature. More than 20 thousand species are known. Jumping pests have several rows of denticles on their hind tibiae. The color is varied - white, red, green, brown, brown, turquoise and others. There can be all kinds of drawings on the surface, patterns with spots, lines and dots.
Adult leafhoppers have small or medium-sized bodies - 2-4 mm in length. The heads are short, articulated with the prothorax. On it there are two large eyes of a typical facet type. Between them there are three more eyes of a simple structure.The leafhopper that lives on roses has short antennae with three segments and a well-developed mouth.
The front and middle legs are flexible, the hind legs are intended only for jumping. Cicadas also fly well, moving from rose to rose - their flight is reminiscent of the flight of whiteflies and butterflies. The wings are transparent, with the front wings being longer than the hind wings.
Cicadas are active in hot and dry weather, but prefer to hide in cloudy and cool weather.
Reproduction
The pest is represented by males and females. The latter lay eggs from the end of August to the first days of November. They form small clusters in wheatgrass, reeds, reeds, rosehip and rose stems. The eggs overwinter, and when the weather warms, they hatch into larvae.
During reproduction, the leafhopper on roses undergoes incomplete metamorphosis. It can produce 3-6 generations per season, depending on the climatic conditions of the area. The main stages are:
- Imago - at this stage the insect has a narrow, slender body, reaches a length of 3.5 mm and a width of 0.7 mm. The eyes are dark, the wings are pale yellow or greenish. There are two pairs of wings, as well as a proboscis-shaped sucking mouthpart.
- The eggs are white, transparent, and overwinter in the bark, at the base of the buds, closer to the top of the rose bush.
- The eggs hatch into larvae - this happens from late April to early May. Development takes about a month.
- Next, a new generation of adult leafhoppers appears—the adult stage. Pests spread to roses, apple trees and other crops, after which the development cycle repeats.
What harm do they cause?
The leafhopper harms not only roses, but also other crops, mainly fruits and berries:
- pear;
- cherry plum;
- cherry;
- peach;
- Apple tree;
- strawberries;
- cherries;
- almond.
Cicadas feed on the plant juices of rose leaves. The harm is quite noticeable and is associated with three main points:
- Damage to leaves, which can lead to plant death.
- Transfer of fungal spores and other dangerous infectious agents.
- Damage to young shoots of roses.
In the first case, the leafhoppers penetrate the underside of the leaves, pierce the surface tissues with their mouths and suck out the juices. At the same time, the insect releases saliva, which contains poison. It attacks new tissue, causing foliage to die.
In the second case, the damage caused by the leafhopper is due to the fact that it makes numerous holes on the surface of the leaves, into which pathogenic bacteria and fungi penetrate. The situation may be aggravated by the fact that gray rot, powdery mildew and other infections become more active due to the rainy summer.
Pests gnaw small holes on the surface of leaves
Cicadas attack young shoots of roses. They lay eggs directly under the bark, where they overwinter. As soon as the larvae emerge from them, they immediately begin to feed on plant juices and weaken the rose.
Signs of defeat
The cicada can be seen with the naked eye because the insect is quite large and the infestation is usually numerous. At the same time, there are a number of additional signs by which the appearance of a pest can be determined:
- small yellow-white dots appear on the surface;
- gradually they increase in size and merge;
- the foliage turns yellow and falls off over time;
- the bush looks underdeveloped;
- flowering is not so abundant;
- if the damage is severe, the rose may die.
Reasons for appearance
Pests are ubiquitous, so it is impossible to completely protect against their occurrence. Often the reasons for the appearance are the following factors:
- hot weather;
- lack of rain and temperature changes;
- close proximity to rose hips;
- lack of preventive treatments for roses using insecticides and folk remedies.
Measures to combat leafhoppers on roses
There are several ways to destroy the pest. The main thing is to treat roses against leafhoppers. The most effective means are chemicals (special insecticides). As an additional measure, homemade solutions are also used, which are quite easy to prepare yourself.
Preparations for leafhoppers on roses
The most effective way to destroy the pest is to use preparations for the roseate leafhopper. Experienced gardeners recommend using the following insecticides:
- "Calypso";
- "Aktara";
- "Fufanon";
- "Bazudin."
You can also use other products that contain permethrin, malathion, or diazinon.
"Aktara" is one of the best drugs for exterminating pests
Folk remedies for leafhoppers on roses
You can also spray roses against rose leafhopper using folk remedies. They give a good effect at the early stage of the invasion; they are also used for preventive treatments. The most popular recipes include the following:
- Tar soap - 300 g per 10 liters of warm water.The solution is thoroughly mixed, cooled to room temperature and processing begins. The recommended regimen is up to three times a week, the main period is May and June.
- Infusion of 250 g of onion (with peels) or garlic cloves. Infuse for 24 hours in 1 liter of water at room temperature. Then dilute 50 times – i.e. This amount is enough for five buckets and roses are treated for thrips up to four times per season. In this case, an interval of seven days must be observed.
- Chamomile - prepare an infusion in a ratio of 1:3. Add 40 g of laundry or tar soap shavings to it. The components are thoroughly dissolved and treatments are carried out several times a season with an interval of one week.
- If horse sorrel grows nearby, take the roots, chop them, measure out 200 g and pour 10 liters of water at room temperature. After this, leave for two hours, filter, add 40 g of laundry soap shavings and begin processing.
Prevention
Getting rid of leafhoppers on roses is not so easy. Therefore, it is recommended to carefully follow basic preventive measures. Experienced summer residents advise adhering to the following rules:
- Avoid close proximity of rose hips to roses - best by a few meters.
- In autumn, the soil needs to be carefully dug up both in the inter-rows and in the trunk circles of roses.
- Carefully weed and loosen the surface layer of soil.
- Periodically inspect roses and carry out treatments against leafhoppers (especially in dry and hot weather). And if the bush is severely affected by the pest, then it is better to dig it up and burn it or place it in quarantine until it is completely cured.
- Plants need to be fed moderately; it is especially important not to overuse nitrogen products.Otherwise, the rose will begin to gain green mass, and it is the leaves and young shoots that serve as food for the leafhopper.
Every spring, the bushes are treated with preparations to prevent
These include Tagore, Fitoverm, Danadim, Ditox and Akarin.
Conclusion
The roseate leafhopper is quite prolific and unpretentious. If it appears on one bush, it is possible that it will affect the entire garden. Therefore, it is important to learn how to identify the signs of its invasion, as well as carry out preventive treatments annually using insecticides and folk remedies.
