Вт, 05 июл 2016 Автор: Галина Панкратова
The main task in growing any fruit or berry
crops – getting high yield and high-quality fruits. These
indicators primarily depend on the state of the whole plant:
its growth and development, from its “health”. Can not imagine,
so that the sick and stunted currant bush gives a beautiful crop and
juicy berries. That is, for a good harvest is necessary,
so that all parts of the plant functioned normally.
Если же у смородины листья twisted и сохнут, то вряд ли
it is worth waiting for her full collection of berries. What to do? Before
all you need to find the cause of the plight of the bush and why
twisted листья у смородины, затем выяснить, чем
process.
Contents
Почему twisted листья у смородины
What you need to do to find out the cause of the painful condition
a bush? It is necessary to determine the nature of damage to the leaves. The reasons
diseases can be diverse, but mostly they are pests
and fungal infections.
Pests
Spider mite
Settled with the help of wind and cuttings. Braids bottom
part of the web network of the thinnest web. Damaged places
are light specks, gradually growing in
faded areas. The leaves become “marble”, darken and
dry up. Currant suffers. Its winter hardiness decreases and
yield
Fallen leaves and topsoil are the wintering grounds for females.
In the spring, they climb currants and lay eggs on
blooming leaves. Hatching larvae can be seen in
magnifier. They are yellow-green in color. In the heat in the south develops to ten
generations. The mass output of the tick falls on June – July. By the fall
the larvae become orange-red and hibernate.
Currant glass bowl
A butterfly with narrow transparent wings, on the belly of a female there are three
transverse yellow stripes. Butterflies fly out in ten days
fifteen after the flowering of black currant. They save up to 50
eggs in the cracks on the bark. The caterpillars gnaw into the core of the branches,
doing moves up to 40 cm. Next spring and summer they damage
branches sliding down. In the fall, winter again within the branches and in the youth
Spring – early summer, making a hole, go outside. At first
pupate and then turn into butterflies.
Branches affected by the glass case wither and shrink at the beginning
ripening berries of black currant.
Currant leaf gallitsa
A small mosquito brownish-yellow color, with one pair of wings.
Eggs are laid on young leaves of black currant, on
the tips of the shoots. Young leaves damaged by maggots
are deformed, acquire a “ragged” look, turn black and dry. Shoots
stop growing or begin to branch out unnaturally. Special
young bushes and saplings suffer. Up to four in one summer
generations of midge. Winter is carried out in cocoons in the soil. Years begins
when blooming currant flowers. Lays eggs on
blooming leaves. Hatching larvae live in groups in
unfolded leaves, causing them to curl and shrink.
Tops of shoots often die. Special большой ущерб вредитель
inflicts in nurseries.
Currant Shoot Galitza
Yellow-orange mosquito with two brown stripes on the back;
wings covered with thick dark hairs. Lays eggs in
cracks bark currant. Larvae live under bark colonies.
They feed on the sap of the branches, causing the bark to take on a brown hue,
gradually getting dark. Indented areas protrude
gradually growing spots and cracks. The branches break down and
dry up.
За лето отрождается 2—3 generations of midge. Annual extinction
branches reduces the plant’s ability to repair and
yield
Sheet gall aphid
It settles on the leaves of white and red currants. In spring and summer
the period of aphids do not have wings, later winged females fly to
long distances. The pest overwinters in the stage of eggs, which
lays in the fall on the bark of shoots near the buds. Larvae hatch
in phenophase blooming buds. Aphid colonies settle on the bottom
leaf surface. Reds are formed on the upper side of the leaves.
or yellow “blisters” – galls. The leaves are dying.
When currant growth stops, the aphids migrate to grassy ones.
and weeds. In September, the pest switches back to
currants to lay eggs.
Gooseberry Shoot Aphid
Larvae hatch из яиц во время набухания почек. Feed on
leaves, causing them to curl. Shoots деформируются, плохо
grow up. The leaves are compressed into a ball. In the end phase of flowering larvae
grow up, turning into females. In the autumn they lay on the shoots.
eggs, which then hibernate.
Diseases
Sphereoteka
It affects young leaves, shoots, fruits. Manifesses mealy
bloom, which gradually becomes brown, felt. Shoots
dry up, leaves are deformed and fall off, berries lose commodity
quality. Infection of plants occurs in the first warm days, when
buds open, leaves bloom, or after tying
berries Most favorable conditions for the development of the disease –
the temperature is 17–28 ° C and the air humidity is 90–100%. In dry weather
the process is suspended.
Anthracnose
Performs on leaf stalks and young shoots, less often – on
berries. It is expressed in small brown spots on the leaves. In the process
disease spots grow together, leaves turn brown, dry, prematurely
fall off.
Spots on petioles, stems and green shoots are small, black,
slightly depressed. As a result, growth and winter hardiness are reduced.
plants, shoots die off.
Signs of it appear on the leaves in June. Infection fast
grows under favorable conditions and continues to the end
September Intensive development of the disease occurs in years with a strong
moisturizing.
Septoria
Mushroom infects leaves and berries. Manifested in education below
leaves brown spots of various shapes. With the development of disease spots
become white with brown trim.
On berries, the disease appears before ripening brown spots,
depressed or cracked. They also form disputes.
The leaves fall ahead of time, the growth slows down, the quality of the berries
getting worse.
Columnar rust
Chlorotic spots appear on top of the leaves, pustules below.
fungus, orange and powdered. They gradually turn into
yellow-brown columns of hair spores, like felt. TO
In autumn it turns brown. Leaves fall in a month and a half to
natural leaf fall, which affects the winter hardiness of plants
and yield. Spores overwinter on fallen leaves, mycelium – on
coniferous trees. European blackcurrant severely damaged
and Scandinavian subspecies. Rust of this type is found in all
areas of industrial cultivation of currants.
Glass rust
Black currant becomes infected during the bud break. On the leaves
young shoots protrude yellow spots. Later they swell and
cracks become visible cups filled with
orange spores.
Листья буреют и dry up. Crumbled berries. Spores infect sedge,
a mushroom develops on it in the second half of summer and winters. Most
severely the disease develops in the rainy spring. Currants not
should be cultivated in growth-friendly areas
sedges.
Currant leaves curled than process? Events
fight against diseases and pests of currants.
In the fall or early spring, they are removed under the root and destroy the dry ones.
damaged shoots. In such shoots may be larvae.
glass, goldfish, stem midge, currant bud moth and
other pests, pathogens of various diseases (anthracnose,
powdery mildew, etc.). They burn the fallen leaves, dig up the soil with
to reduce the number of pests and destroy sources
diseases.
How to treat currants from twisting the leaves?
Sample calendar of protective events:
• In the phase of kidney blooming against major fungal diseases in
plantings are sprayed with 1% Bordeaux mixture.
• Before flowering, the bushes are treated against aphids, mites, and other
pest one of the insecticides: fufanone (10 ml / 10l of water), or
Kemiphos (10 ml / 10l of water), or a spark (10 ml / 10l of water).
• Before the advent of floral brushes against anthracnose and others
mushroom diseases spend the next treatment Bordeaux mixture
(100 g of copper sulphate + 100 g of lime / 10 l of water).
• To contain American powdery mildew (sphere library)
treatments are carried out by Tiovit Jett (20-30g / 10l of water).
• After flowering, cut out below the level of the soil and burn
damaged stems.
• After harvesting with the appearance of pests and diseases
Plantations are sprayed with the same preparations as before flowering.
On commodity plantations of berry crops of chemical treatments
after flowering do not hold. In case of pests
After flowering, the plants are protected by biological treatments.
drugs:
• bitoxybacillin – 80–100 g / 10 l of water;
• lepidocide – 20-30g / 10l of water;
• fitoderm – 4 ml / 10 water.
Spraying is carried out, against each generation of the pest.
(caterpillars 1-3 years old) with an interval of about a week.
These мероприятия помогают ликвидировать различные причины
curling leaves currant.
