Diseases of raspberries and struggle with them. Raspberry Care
known to every gardener. This is a prickly shrub, individual shoots which can reach two meters in height. The plant belongs to the Rosaceae family, has small nondescript white flowers, collected in inflorescences.
Berry at the dacha
But the popularity of this plant has brought a sweet fruit, which is a multi-peasant team of bright crimson color. Contrary to popular belief, raspberries are not a berry, but a complex fruit.
The shoots of the usual raspberry produce a crop in the second year, but there are special varieties whose shoots bear fruit from the first season. This plant is called "remontant raspberry". Caring for it does not cause much difficulty, so gardeners often prefer this particular raspberry variety. These varieties have been cultivated for over 200 years. Planting on the site of these plants can significantly extend the raspberry season. Therefore, on garden plots, both types of plants are often found: common raspberries, to get a harvest in summer, and to enjoy the fruits in autumn,A repair raspberry is planted. Plant care, bait and watering are basic requirements for a good harvest.
Use in traditional medicine
It has long been considered raspberries drug. Dried fruit or tasty jam with hot tea was always given for colds, accompanied by fever. In fact, raspberry fruits are rich in organic acids that have a diuretic effect, stimulate digestion well, have a fever-reducing effect, and in addition, they have anti-inflammatory and antiseptic effects.
Traditional medicine even uses the leaves and flowers of this plant for coughs, colitis and skin diseases. But with all its beneficial properties, raspberry itself is completely defenseless against various diseases. So how to be to gardeners on which sites raspberry grows? Fighting diseases and pests is becoming the main task for obtaining an annual harvest. Diseases can not only harm the amount of crop, but also lead to the death of the plant. Therefore, every gardener should take note of the methods of dealing with diseases and harmful insects.
How to understand that raspberries are sick?
Raspberry diseases and the fight against them (methods, in particular) are very diverse. Each gardener has his own little secrets, the main thing is to correctly determine what exactly the plant is sick with. Signs can be expressed in different ways, but they will have in common that the shrub will change. The changes will affect the leaves or stems, and the fruits will not look very appetizing, or they will not appear at all. If the gardener notices that the raspberries looks different than last year, then you need to sound the alarm.
Root cancer or root spite - disinfection or destruction
If the raspberry bush began to turn yellow, and outside the window is spring or summer, then this is a sign of a serious disease. Most likely, the plant struck the root cancer, or it developed root canking. These diseases have similar symptoms: the growth of shoots ceases, tuberous growths appear on the roots, the fruits become unsweetened, and the leaves turn yellow and curl. Most often, these problems occur in areas where the soil is weakly alkaline or neutral. Raspberries, which you plan to plant in your garden, should be carefully examined.Seedlings that have swelling on the roots should be cut off, the affected part of the rhizome should be removed, and a solution of copper sulfate should be prepared for cutting. Processing slice is required, do not neglect it. For prophylaxis, experienced gardeners change their place of planting raspberries at least once every five years.
Sometimes the leaves turn yellow because the raspberry, which has not been cut for several seasons, has thickened too much. Since thorny thickets are less well ventilated, the bushes lack light and the yellowing of leaves is a sign that it is time to prune. Do not neglect this procedure, as the late production will lead to a decrease in the yield of raspberries.
Mosaic - Gradual Degeneration
If the raspberries, which was cut in time, turned yellow, the cause could be various types of viral diseases called mosaics. Yellowing begins with the veins of the leaves, raspberry grows worse, the leaves become small, pale and gradually turn yellow. Young shoots gradually degenerate, you can not wait for a good harvest.
Clearly prescribed schemes against these diseases do not exist, they are not amenable to drug treatment.To avoid problems, you need to take care of raspberries and carry out prevention of the appearance of aphids, which is the peddler of the disease. Infection with a virus can occur through damage caused by a dirty tool and through young basal shoots. Particularly noticeable diseased bushes in early summer and late autumn. Mosaic areas are ruthlessly uprooted. Removed plants are better burned.
Witch Broom - An Incurable Virus
In the people, this viral disease is called overgrowth. Scientists are constantly researching viruses that cause diseases of raspberries, and the fight against them has been going on for many years, but they cannot find a broomstick on a witch's broomstick. If the owner of the site noticed that many thin small shoots appeared at the root of the raspberry bush, which grow very slowly and are covered with small leaves, and the fruiting has ceased, it means that you need to take a shovel in your hands and, not sparing, destroy diseased plants.
The cause of the disease could be injuries to the stems by sucking insects and damage to contaminated tools. Sorry for lost plants is not worth it, it was impossible to save them.
Purple, ulcerative and white spotting - fungal diseases of raspberry
Common to these diseases is the defeat of fungal spores, but they manifest themselves in slightly different ways. Infection with purple blotch is determined by light purple spots with black splashes in the center. Most often they appear in the places of attachment of leaves. As the disease progresses, cracks appear on the stems, and they become brown in color.
Ulcerative spotting is manifested in the form of blurry brown spots. Over time, spots appear in the spots, in which the spores of the fungus ripen. The stem is covered with split loose ulcers.
White spots on stems, leaves and fruits are also a sign of raspberry disease, and the fight against them is quite possible. Actually, the recommended method can be used for all fungal diseases of raspberries. Remember that in order to cope with fungal diseases, you must first choose the most resistant varieties, immediately destroy the cut and dug diseased plants, monitor the density of the raspberries, avoid over-irrigation and do not plant raspberries in low-lying areas.In addition, every spring, in the period of blooming of the kidneys, process the berry with Bordeaux liquid.
In the summer should be sprayed with preparations containing copper. Preventive treatment is performed three times: with a length of shoots up to 20 cm, just before flowering and immediately after it. If fungal lesions were strongly pronounced during the year, then the berry can be processed additionally after harvesting.
As you can see, the raspberry, diseases and treatment of which were described above, requires a serious attitude towards yourself. If the garden plot is started and the shrubs grow uncontrollably, then the likelihood of defeat viral and fungal diseases is greatly increased. Various pests are threatened by unkempt berries, the bites of which carry diseases, threatening to spread them throughout the garden.
Garden raspberry pests, descriptions and methods of control
- Raspberry weevil -gray-black little bug that has an insatiable appetite. Blooming raspberry is attacked as the female lays in egg buds. The larvae eat away the flowers from the inside, the hatching bugs eat and damage the foliage.The control measure is spraying with insecticidal preparations before flowering and after harvesting.
- Raspberry beetle- the main pest of raspberry, damaging the fruit. The body of the bug is dirty-yellow, oblong. Infection of the berry with a raspberry beetle makes the crop unfit for consumption. Insecticides are also used for the fight, since the raspberry beetle hibernates in the soil under the bushes, also digging of the soil during the period of occurrence of the pupae gives a good effect.
- Kidney mole- a small butterfly, the main harm is done by the larvae, which, during the swelling of the kidneys, eat them away from the inside. In order to destroy the bud moth, the shoots infected with the pest are cut out, the rest are treated with insecticides.
- Raspberry fly stem- small gray fly, which lays larvae that feed on plants. The larva damages the raspberry stalks from the inside, gnawing the passages in the shoots. The tops of the shoots bend and gradually fade. To overcome this pest, it is necessary to cut and burn the damaged parts of plants, and spray the rest with insecticide.
- Raspberry Tick -pest, damaging the kidneys and raspberry shoots. More than a hundred insects overwinter in each kidney of the affected plant.When leaflets appear, the pest settles in their lower part. Leaves become stained and become ugly. To fight in the course are insecticides, spraying is done twice: before flowering and after harvest.
Proper care of raspberries. Remontny grades
Raspberry, diseases and pests which so annoying gardeners, requires careful self-care during the entire growing season. It is necessary to loosen the soil and remove weeds in time, carry out mulching twice per season, that is, pour humus or compost on the plants. After the second season of fruiting, the old shoots are cut in such a way that the stumps do not stick, and the young shoots are shortened tops. Weakened, thin and frozen in winter shoots are pruned to the first healthy kidney.
Raspberry Breeding Methods
Experienced gardeners, having ordered several varietal saplings, achieve that on their site there are whole plantations on which tasty and large varietal raspberries bear fruit. The reproduction of shrubs is not very troublesome. There are four methods of reproduction: from the roots, cuttings, from the seedling and separation from the uterine bush.For example, from 1 kg of the roots of a valuable plant, more than 80 seedlings can be obtained. In principle, raspberry breeding tolerates well enough, so you don’t have to worry about how a new sprout will take root.
In spite of the difficulties
Conducting pruning, mulching and spraying on time, you can protect your raspberries and achieve a good harvest. And thanks to remontant varieties, the harvest can be obtained twice per season and prolong the pleasure until late autumn. No matter how much time raspberry diseases take and the fight against them, gardeners will not abandon the cultivation of this wonderful and useful plant.