and ornamental varieties of honeysuckle, andplants that produce edible fruits, are increasingly subjected to attacks of pests and all sorts of diseases. The earlier opinion that the blue berry shrub does not have natural enemies turned out to be wrong. The spread of culture in various regions of the country has shown that not only humans, but also insects, viruses and fungi are showing interest in shrubs.
If you do not worry about the protection of the crop, the appearance of the plants first deteriorates, and then because of the developing diseases of the honeysuckle and the vital activity of the pests, the yield is seriously affected.
Why does honeysuckle dry during ramulariasis?
Sometimes the drying out of the first separate sections of the leaves, and then of the whole foliage, is a consequence of the activity of the fungi belonging to the Ramularia family. Visually, such traces on the foliage of the affected plant look like patches of yellow-brown or brown with a dark rim.
The shape of the spots can be either round or irregular. And over time, they grow, and the affected area of the honeysuckle disease, like Ramulariosis or spotting, expands. Ripe spores in the form of white powder several times during the growing season are showered from the places where the fungus accumulates and spread on the basal litter and healthy leaves.
The danger of the disease is not only that the crown of honeysuckle dries out and the plant weakens, but also the ability of the spores to hibernate in the middle zone and settle again in spring. Therefore, as security measures:
- carefully remove the affected shoots;
- collect fallen old foliage;
- all plant parts infected with fungus are burned.
Treatment of bushes with fungicides, as well as with copper sulphate, Bordeaux liquid or other preparations containing copper, will help protect the plant from honeysuckle disease of edible fungal origin.
Zekrosporoz - a dangerous disease of honeysuckle
The answer to the question: "Why does the honeysuckle dry?" Often becomes a spot on the leaves, which have a dirty green tint, and then acquire a brown or light gray color and a dark border around the edge. This is an obvious sign of the presence of Cercospora libicola fungi on the plant, causing cercosporosis, an edible disease that is dangerous for honeysuckle.
For healthy plants, spores of the fungus in the form of dark powder fall from the affected litter or already infected bushes.
Measures to combat chalcosporosis are:
- in the collection and burning of fallen leaves and already infected with fungus;
- pruning shrubs in order to prevent them from excessive thickness and better ventilation of the crown;
- regular plant fertilization with mineral fertilizers;
- spraying before opening the buds and after gathering the berries of planting and row-spacing with Bordeaux mixture, cuprozan and fungicides.
Tuberculosis, or drying of the branches
In June, darkening and then withering and drying of the leaves and individual shoots become noticeable. Why does honeysuckle dry in this case? Guilty are the mushrooms that cause tuberculosis infection on the fruiting shrub. Shoots affected by this disease of honeysuckle can be recognized by the characteristic red-brown tubercles, within which spores mature, spreading to healthy branches and hibernating inside the shoots and on fallen diseased leaves.
To prevent the disease:
- cut and necessarily burn the affected stems of fungi;
- in early spring and after flowering is treated with bordeaux liquid shrubs.
Mealy dew of honeysuckle
Mushrooms that cause this disease of edible honeysuckle form a white web-like bloom on the shoots, upper and lower leaf surfaces. The young branches are the first to suffer, but over time the disease spreads to the whole plant. The leaves turn brown, dry up and fall off earlier than expected, similar processes take place on the shoots, where the bark first dries, and then the branches themselves become deformed, the plant withers and weakens noticeably.
It is possible to cope with the fungus that wintering on the crust and thicker plant residues, if the foliage and diseased branches are destroyed, and the shrubs with sulfur-containing preparations are treated at the first signs of honeysuckle disease.
Blackening of the foliage and drying branches of the
If black shoots appear on the shoots and leaves of honeysuckle, which without proper attention from the gardener quickly expand and merge, then in this case it is mono to speak of the activity of fungi. As a result, at first the foliage looks “dirty”, then it begins to wither and falls, and the berries can also affect the vital activity of the causative agent of the honeysuckle disease.
You can cope with the problem:
- timely cutting off dry and damaged shoots;
- collecting and destroying affected foliage;
- in early spring, annually sprinkling plants annually with aha-peak or Bordeaux mixture and repeating the treatment after flowering.
Mottle of leaves
Some types of soil nematodes can spread mottled leaves of honeysuckle, expressed in a change in the natural color of foliage, the appearance of whitish strokes and spots on the leaf plates.
As a rule, treatment with chemicals in front of this honeysuckle disease is impotent, therefore, the affected shoots and individual plants are simply removed.
Reza Mosaic Virus The disease caused by the virus and spread by nematodes is manifested in the fact that the newly rooted honeysuckle seedlings sharply shorten the internodes, and an uncontrolled growth of lateral shoots from the axillary buds begins. Foliage does not develop, plants wither and die.
Measures to combat this disease of honeysuckle include careful selection of planting material, as well as the mandatory destruction of shrubs with signs of disease.
If in winter the shoots of honeysuckle were damaged by frost, they must be cut out in time, otherwise all the same mushrooms will quickly settle and develop on the wound surface, causing the shoots to dry and fall off the leaves.
Common pests of honeysuckle: photo and description
Rosaceae moth is a small, highly pubescent brown butterfly whose caterpillars eat young foliage located on actively growing shoots. Sometimes from the pests of honeysuckle, in the photo, growing points suffer, and the damaged parts of the shrub are combined into a dense, web-covered lump.
The hip-pinch, or rather the caterpillar of this brownish or gray butterfly, penetrating deep into the ovary, eats not only the pulp, but also the seeds. This leads to premature staining of fruits in blue color and their fall, which, with the abundance of pests, can seriously reduce the yield of plants.
honeysuckle aphid is the most frequent, but always unwelcome guest on the honeysuckle bush. During the season, at least two generations of this pest of honeysuckle may appear, the photo of which well reflects the mass character of the lesion.
Harm caused by adult aphids and their larvae is expressed in the weakening of the shrubs due to sucking the juices from the foliage and young shoots.
One of the most effective ways to combat aphids is to treat honeysuckle with an extract of tobacco dust with the addition of a nozzle solution at the rate of 100 grams per 10 liters of water. The fluid layer should cover all foliage and shoots affected by pests. To do this, spraying is carried out in dry weather and the shrub is treated from all sides.
The gooseberry moth is a motley large butterfly laying eggs in the middle of summer, from which caterpillars soon feed on foliage and young.
The willow and acacia insects of the are pests of honeysuckle, as in the photo attached to the shoots and sucking from them the juices. As a result, the plant is very weak. Fruiting fades, and after a while the bush dies.
Sometimes on the leaves of the honeysuckle can be seen winding stripes with dried and pale surface. This is the result of the activity of the larvae that develop from eggs laid in the thickness of the leaf plate by various types of fly-miners.
Making twisting passages in the foliage and feeding on the sap of the plant, as in the photo, the pest of honeysuckle interferes with the photosynthesis process and slows the growth of the shrub.
Treatment of honeysuckle bushes with insecticide chemicals should be carried out in the form of small-drop irrigation and only in dry weather. A day or two after spraying, the effectiveness of the procedure is checked and, if necessary, repeated processing is carried out.
At the same time, one should not forget that the spring application of chemicals for edible honeysuckle is unacceptable; otherwise, toxic preparations cannot get into the ovary. In the autumn, all branches and leaves, including those that have already fallen, must be cut and destroyed.