DISEASES AND PESTS OF BLACK CURRANT AND WAYS TO COMBAT THEM

Diseases and pests of black currant and ways to combat them

Contents

A well-groomed garden with properly planted plants does not create conditions conducive to the development of diseases and pests, therefore compliance with the rules of agricultural engineering is the basis for combating diseases and pests of black currant.

Planting black currant

Black currants can be planted in the spring, before the buds have blossomed, but the optimal time for planting is in late September — early October.

Seedlings should be healthy. It is advisable to choose a two-year seedlings with roots of 15-20 cm and ground shoots of about 30-40 cm. The soil should be chosen fertile, acidic and marshy soil should be avoided.

For each bush, it is necessary from 2.5 to 3 m, and the distance between the rows should be at least 2 m. The depth of the pit should be about 50 cm and at least 40 cm in diameter. Seedlings when planting should be placed at an angle.
Next to the currant bushes should not be coniferous trees.

Varieties of varieties of black currant.

Red currant. Find out here all about planting and caring for her.

Growing basil from seeds in our article //rusfermer.net/ogorod/listovye-ovoshhi/vyrashhivanie-i-uhod/vyrashhivanie-bazilika-iz-semyan-metody-polucheniya-kachestvennogo-urozhaya.html.

Growing and caring for black currants

To prevent diseases and get a good harvest of black currant, you must:
1. In spring before bud break:

  • cut diseased and dry branches affected by gall midge larvae and glass case;
  • Loosen the soil, make nitrogen fertilizers, mulch the soil;
  • Spray the bushes and soil with nitrafen and Bordeaux with a liquid against pests and fungal diseases;

2. Before flowering:

  • spray bushes with 10% concentrate of karbofos emulsion against mites (kidney and spiderwebs), aphids and other pests;
  • spray bushes Bordeaux liquid against fungal diseases;

3. During flowering to identify and remove the bushes that are affected by terry;

4. Immediately after the currant has blossomed, spray the bushes with colloidal sulfur and karbofos against the sawflies, mites and moth;

5. After 10 days, repeat the procedure;

6. After collecting the berries, spray the plants with Bordeaux mixture, copper sulphate, karbofos against pests and diseases;

7. In the autumn, cut out old branches, burn down the fallen leaves, dig up the soil in rows, digging in the remains of leaves, and mulch the soil.

You can also use decoctions and infusions of insecticidal plants, which cause less damage compared to pesticides. When spreading diseases and large numbers of pests, chemical protection measures should be used.

Common diseases of black currant and fight against them

Anthracnose

Anthracnose, the causative agent of which is a fungus that multiplies spores, affects young shoots, leaves, petioles and currant stalks.

Vague brown spots appear on leaves with a diameter of approximately 2.5 mm, in the middle of which a dark tubercle is visible. With the further development of anthracnose, the spots begin to coalesce, the leaves turn brown in color, dry and curl up at the edges, and then fall.

The lower part of the shoots becomes bare, sores appear on the shoots and petioles. In bushes affected by anthracnose, the growth of young shoots decreases, the yield decreases. Bushes heavily affected by the fungus, die in 4 years.

When a disease is detected in early spring or autumn, the affected shoots are cut out. Shrubs before blooming buds should be sprayed with nitrophene (10 liters of water per 300 g). Before flowering, after it and after picking the fruit, spray with Bordeaux liquid.

Recommendations gardeners — Growing broccoli.

How to grow a cauliflower in your garden read here //rusfermer.net/ogorod/listovye-ovoshhi/vyrashhivanie-i-uhod/vyrashhivanie-tsvetnoj-kapusty-v-otkrytom-grunte.html.

Septoria

With septoria or white spotting, there is a premature fall of the leaves, poor growth of shoots and their partial death, drying of the buds. The causative agent of the disease is a mushroom.

When a disease occurs in June, numerous round or angular brown spots appear on the leaves, which then brighten in the center, and the border remains brown.

Later, black spots appear on the spots, in which there are spores of the fungus. After the departure of the dispute on the spot spots an ulcer. Currant bushes are massively infected at the end of summer.

In early spring, before the buds bloom, the soil and bushes are sprayed with nitrafen. With the development of the disease apply Bordeaux fluid.

Mealy dew

Mealy dew is a fungal disease that affects all parts of a plant. The damaged parts of the currant are first covered with a powdery white patina that can be easily wiped off, and over time becomes denser and resembles a dark brown felt.

The affected shoots wither and die, the fruits do not develop and fall prematurely, the leaves curl. For several years, with a strong defeat, the plants die.

Shrubs and soil should be sprayed with iron sulfate (10 liters of water per 300 g). When powdery plaque appears, spray currant with a solution of soap and soda ash. Freshly prepared bleach is also used (10 liters of water for 1-2 tablespoons).

Processing should be carried out 2 weeks before harvesting. After picking berries, preparations of basezol, sulfur, 10% emulsion of Topaz are used.

It is also good to use infusion of rotted manure (forest litter, hay, greenhouse earth). For the infusion, 1 part of manure and 3 parts of water are taken, insisted 3 days, three times diluted with water and filtered.

Currant sprayed infusion in cloudy weather in 3 stages: before flowering, after and before the leaves.

Learn on our website how to grow Chinese cabbage.

We recommend reading the features of planting seedlings of cabbage in the ground //rusfermer.net/ogorod/listovye-ovoshhi/vyrashhivanie-i-uhod/vyrashhivanie-rassady_kapusti_v_domashnih_usloviyah.html.

Reversion

Currant reversion or terry — a viral disease that affects the entire plant and leads to currant infertility. Transmitted through planting material and kidney mite.

Manifested in the deformation of the leaves, which become elongated, three-lobed, with pointed ends, decreases the number of veins. Leaves lose their peculiar smell, they may acquire a purple hue. Fruits are not formed.

Sick bushes to root out and burn. Systematically fight the kidney mite.

Glass rust

Goblet rust, caused in spring by spores of the fungus, is characterized by the appearance of orange pads on the young shoots, leaves, flowers and fruits, which by the end of May resemble the accumulation of goblets. Further development of the fungus occurs on sedge, where the wind carries the spores. Affected flowers, leaves and berries fall.

Spray currant bushes three times with Bordeaux liquid. In summer, mow sedge, collect fallen leaves and remove the affected shoots.

Columnar rust

Currant leaves are affected by columnar rust, which is manifested by small yellowish spots and bright orange pads on the underside of the leaf. When the disease leaves prematurely fall, which leads to a decrease in yield next year. More often affected currants, near which coniferous trees grow.

Spray Bordeaux liquid before flowering and after it, as well as after the harvest.

Regularly caring for the black currant bushes, in time removing the affected shoots and treating the soil and bushes in a timely manner with drugs that prevent the development of diseases and the reproduction of pests, you will be able to harvest a wonderful harvest every year.

ph.farmforage.com

Save currants from aphids: how to treat currants from gall aphids? Folk remedies for the fight against aphids on currants

From early spring, summer residents have a lot of worries: watering, weeding and even pests annoy. When the first leaves on the currant bloom, aphid immediately appears. The pest settles on young shoots that are deformed and dry out. Currant yield is declining. What to do and how to deal with aphids on currants?

How to detect aphids on currants

Most often on the currant gall aphid settles — a small sucking insect. It feeds on aphids by young shoots and currant leaves. A pest colony can be found on the bottom of a currant leaf. Red or yellow swellings form on the damaged leaves, tubercles — galls.

Aphids parasitize during the season, the pest hibernates under the bark of annual shoots. The female lays eggs closer to the kidneys. In spring, when the weather is warm, the larvae go outside and feed on young leaves.

Around mid-July, when currant leaves cease to grow, aphids have wings. At this point, the pest leaves the bush. If there are a lot of weeds around the plantings, the gall aphid will move to them, where it will feed until the fall. During the season, more than one generation of pests is introduced, which in the autumn, around September, migrate back to the currant bush. Females begin to lay eggs.

Gall aphids on currant bushes are a great danger, especially for young plants. Immature bushes affected by a large number of pests are unable to develop normally. The productivity of adult bushes drops sharply, the berry grows smaller.

How to deal with aphids on currant bushes

One of the important factors in the fight against gall aphids on currants is prevention. From early spring, it is necessary to carry out the main preventive measures:

• be sure to remove all weeds under the bushes;

• carry out sanitary pruning of the bush, cutting all diseased branches;

• attract beneficial insects that feed on gall aphids, such as ladybugs;

• carry out spring scalding of the bush with boiling water.

Important! If ladybugs and lacewing settled on the currant bushes, then insecticides must be used carefully. It is better to replace them with herbal infusions. Useful insects will help get rid of aphids quickly.

By attracting beneficial insects to the garden, you can get rid of gall aphids without resorting to chemicals. To attract insects, experienced gardeners practice planting medicinal plants under currant bushes:

Many insects that are useful for the garden prefer to live in dill or buckwheat plantings.

How to get rid of aphids on currant bushes: garden fumigation

Very often, one way to combat aphids is to fumigate the garden. Experienced gardeners practice fumigation with rubber, tobacco and mushroom.

Fumigation should be carried out before the buds open, at the time of their opening.

• Fumigation with rubber is carried out as follows: put a bush of rubber in an old pan and put smoldering under each bush of currant.

• Tobacco and mushroom fumigation with a rain cover is carried out using a beekeeper’s smoker.

You need to smoke a garden for at least three hours. You need to do this in the evening, in calm weather. Aphids die completely, the use of chemicals is not necessary.

The disadvantage of this method is caustic smoke, which adversely affects human health.

Currant aphid control: chemical treatment of bushes

The chemicals that need to be used in several stages will help get rid of gall aphid colonies on currants. Use chemical preparations only in advanced cases and mass attacks of pests.

1. The first spraying of currants is carried out in the spring, at the time of budding.

2. The second time you need to carry out the processing when the flowering shrub.

3. Spraying currants a third time is better immediately after flowering.

4. The last processing should be carried out only after a full harvest.

How to treat currants from gall aphids?

For treatments using chemicals that are dissolved in water. Such drugs have proven themselves well:

• Actellic (dilute 15 ml per 10 liters of water);

• Novaktion (dilute 5 ml per 10 liters of water).

Many summer residents recommend resorting to folk remedies during the second and third sprayings, without using chemicals.

Folk remedies for the fight against aphids on currants

Using folk remedies in the fight against aphids, you can get rid of the pest without interfering with beneficial insects. For these purposes, use the following infusions:

• Infusion of marigolds;

• Infusion of red hot pepper;

• Infusion of tomato tops;

• Infusion of onions and garlic;

• Ash infusion with wormwood;

• A solution of soda ash;

• Infusion of celandine.

1. Tobacco infusion

An infusion is prepared from tobacco dust or shag, with the addition of laundry soap and water. For this, 500 g of tobacco dust is poured with 10 liters of water and the mixture is insisted for several days. Filter the finished infusion, dilute with 10 liters of water and add 100 g of grated laundry soap as an adhesive.

Spraying is carried out in the evening, in clear weather. After the rain, repeat the treatment.

2. Infusion of marigolds

It is very effective in combating gall aphids infusion of marigold, which is prepared from dried flowers. For a 10 liter bucket, take ½ of the crushed marigolds, which are poured with warm water. Insist mixture for three days. The finished solution is decanted and 50 g of grated laundry soap is added.

3. Infusion of red hot pepper

You can prepare a concentrated infusion of red capsicum. To do this, 1 kg of fresh pepper must be cut and put into a pan, pour 10 liters of cold water. Boil the mixture and simmer for 1 hour. The cooled solution is removed in a warm place for several days. The finished solution is filtered and stored in the cold.

For spraying, a working solution is prepared from the concentrate. For 10 liters of water use 1 cup of concentrate. You can add grated laundry soap to the solution as an adhesive.

Important! Ready working solution and red hot pepper are used not only in the fight against aphids. It is good to use against slugs.

4. Infusion of tomato tops

From tomato tops, a good infusion is obtained to combat gall aphids on currants. To do this, dry tomato tops, about 2 kg, and fresh 4 kg tops are chopped, pouring with 10 liters of water. The mixture is boiled for 30 minutes. The resulting concentrate is cooled and stored in the cold. Before spraying, a working solution is prepared. For this, the concentrate is diluted with water in a ratio of 1: 5, adding grated laundry soap.

Important! A working solution of tomato concentrate concentrate can be used to control mites, scoops, moths, cruciferous flea and gooseberry sawfly.

5. Onion and garlic infusion

Experienced gardeners advise spraying currants with the infusion of green onion feathers. To do this, 1 kg of chopped green onion is poured with 10 liters of water, the mixture is insisted for 6 hours. Strain the finished solution and spray.

You can use pre-prepared onion peel. For this, 500 gr. husks insist in 10 liters of water for about 5 days.

Well-proven infusion of garlic. For its preparation, 0.5 kg of chopped garlic is poured with 5 liters of water. Insist the mixture during the day. Ready infusion is used as directed.

Important! Infusions of onions and garlic not only fight pests on currants, but also increase the immunity of plants.

6. Ash infusion with wormwood

Affected currant bushes are treated from aphids with ash solution with the addition of wormwood. To do this, 500 grams of chopped wormwood is poured with water, about 5 liters, adding 1 cup of ash and 50 grams of laundry soap. The mixture is insisted for about 5 hours. Spraying is carried out with a working solution, which is prepared from 1 part infusion and 2 parts water.

7. Soda ash solution

You can treat currants against aphids with a soda solution. Prepare a working solution of 1 tbsp. l soda ash and 1 liter of water.

Spraying with such a solution will help to get rid not only of the aphids, but also drive the fungus from the bush.

8. Infusion of celandine

Summer residents are fighting aphids with the help of celandine infusion. A solution of 4 kg of fresh celandine grass is prepared, which is ground and poured with 10 liters of water. Infuse the solution for a day. The finished solution is sprayed with currant bushes.

Important! During processing of planting currants with celandine solution, it is necessary to use individual protection, since celandine juice is very toxic.

What to consider when processing currants from gall aphids

• Young shoots of currant are well bent, they can be dipped in any remedy prepared according to recipes and washed well, without risk of breaking a branch.

• Spray and wash each branch without missing a single section of the bush.

• It is necessary to spray not only shrubs, but also the soil under it.

• The weather during processing should be calm. When using chemicals, watch out for bees. It is important not to poison the beneficial insects, which are very necessary in the garden. It is better to transfer the spraying to the evening when the bees no longer fly.

• When spraying, be sure to moisten the bottom of the sheet, for this the sprayer is directed inside the bush.

• You should not have high hopes for folk methods of combating aphids on currants if time is lost and the pest has chosen roses, plums and gooseberries. In such a situation, chemicals cannot be dispensed with.

In the fight against aphids on currants, it is important to monitor the cleanliness of the site, to prevent riotous weeds and the proximity of shrubs to anthills. More often carry out preventive spraying with infusions of herbs, monitor the density of the bush and cut diseased branches in time.

ng.ladiesliberty.org

Pests and diseases raspberries

Apiary » Garden » raspberry » Pests and diseases raspberries

Pests and diseases raspberries: description, methods of control.

raspberry – berries unpretentious, but demands the small, but constant attention, as well as the regular variety of diseases prevention, many of which can be caused by various parasites – pest raspberries.

Every gardener needs to know, What are raspberry plant diseases, and determine their symptoms, and know the description of symptoms, and types of pests, to know how to deal with them.

Diseases of raspberries and their control

anthracnose raspberries – description disease, treatment

Anthracnose raspberries photo

One of the most common diseases of raspberry bushes, you can almost certainly be determined by utvoryvshyhsya spots on the leaves raspberries.

Affected tissue raspberry leaf dries quickly and even fall.

The stems of raspberries are also suffering from the disease – they are covered with large white spots, which eventually merge into one large ulcer, raspberry stems bark begins to exfoliate areas.

Similarly affected and shoots, kidney and hand raspberries.

Raspberry rust disease – how to deal?

Rust raspberry Photo

Also very common fungal disease, which is manifested in the spring, as orange spots.

By the summer of the same bulging spots appear on the inside of the leaf, which result in darker, or even blackened.

If severe infection, the plant begins to lose its leaves, slowing its growth.

Description Septoria raspberries – control measures

Septoria raspberry Photo

White spot – fungal disease, in which the leaves raspberries there are numerous spots rounded, initially pale brown, over time were white in the center, red or brown rim.

Raspberry leaf diseased tissue is destroyed as well, and soon falls.

On the stems appear as small dots, which are located in the middle and bottom of the shoots in the kidneys.

When stained torn fabric, forming cracks visible to the eye, and peeling bark of stems of raspberries.

During ripening raspberries this disease reaches its climax.

Bacterial cancer stem raspberries – description disease

Bacterial cancer stem raspberry Photo

The disease stems of raspberries can manifest as tumor length, pectineal form, annual shoots on fruiting raspberries.

Above the tumor tissue is torn and damaged plants.

Bad tumors grow quickly escape across a distance 10-20 centimeters.

There are soft tumors, white, later they harden, become brown and collapse.

This bacterial disease affects primarily the lower part of the stem and the middle raspberries.

Root bacterial cancer raspberries – description, treatment

Root bacterial cancer raspberry Photo

With this type of bacterial disease affects raspberry, primarily, the plant roots, shoots grounds, and the very roots of raspberry.

For patients with rapidly growing parts of the plant tumor, that increases in size, starting with the nuts and 4-5 centimeters, and more.

There is a considerable number of different diseases raspberries, so every gardener should learn the basic symptoms of diseases and constantly care for their Malinniki.

Purple raspberry leaf spot – description

Purple leaf spot raspberry Photo

Dïdimella – purple-brown or reddish-purple spots vague shapes formed on the young shoots of annuals near the insertion raspberry leaves in late summer.

Then they darken and grow, and the crown starts to peel and crack.

In severe cases the shoots and buds may die.

It is recommended to cut the stem with scissors or garden sikatorom, and after, as the increase will be collected, Malinniki odnovidsotkovoyu spray Bordeaux mixture.

In prophylactic occurrence didimelly, chemical processing to be done shoots.

In the spring before flowering raspberry shoots solution treat topaz, rubihana or benomilu.

Disease raspberry chlorosis – treatment

Chlorosis raspberry Photo

Viral diseases raspberry fruit shrubs.

When infecting chlorosis, the leaves turn yellow and deform. Shoots, that fruit, slowing its growth, leaves them are small and berries unfit for consumption.

Vertitsyllezne fading – Description disease raspberries

Vertitsyllezne fading raspberry Photo

Fungal bush. Infection comes from soil, which applies to the rhizome, measles and vessels.

Raspberry leaves turn yellow and wither, top fade, shoots begin to grow slowly and stems die.

In this disease must be removed with raspberry root system.

Pest spring and autumn raspberries

Weevil on raspberries – description pest

Raspberry-strawberry weevil – small beetle is most striking early varieties of raspberries.

It feeds on young plants, vyyidayuchy holes in the leaf lamina.

Spider mites in raspberries – how to deal with pests?

Spider mites Photos

Pest cobwebs covering the lower part of leaves and extracts all the juice out of it, causing the leaves turn yellow and crumble.

Pest raspberries – fly steblevі, how to deal?

Steblevі flies photo

Raids these pests usually begin in May. Flies lay eggs more often on the tops of young shoots of raspberries.

Over the next week, emerging larvae. Soon flies gnaw shoots from top to its foundation.

Raspberry suffers, the tip of the plants quickly turns black, rot and eventually dies.

Methods of combating flies to stem raspberries: should regularly conduct prevention, which is everyday closer inspection shoots of young plants.

If you find a crimson stem fly, you need to cut the wound site, just below the localization of plant pests.

Cut off tops of infected flies should be immediately sent to the center.

To destroy pests chemically crimson, raspberry bushes must be sprayed with a solution (15 ml of 10 l water) drug «aktellik», and such spraying may only flowering raspberry.

Beetle on raspberries – looks like, how to handle?

Beetle on raspberries Photo

Another common type of pest raspberries. Raspberry beetle females lay their eggs in the ovaries of the founding of flowering plants, a raspberry you can easily identify the raspberry beetle larvae born.

To protect the buds of raspberry raspberry beetle females should be in flowering plants covering Malinniki nylon network.

In case of raspberry beetle larvae during harvest, just collect them and destroy pests.

Moth pest on raspberries – description

Mill raspberries Photo

Another common pest of raspberries is crimson renal miles.

Appears it is usually in early spring. If you notice, after a rather intensive growth of shoots of raspberries they suddenly ceased to grow – your raspberries raspberry damaged moth.

Break one of those affected shoots, you’ll find inside the caterpillar.

Diseases and pests of raspberries: Video

So, To avoid hitting your plants, rather periodic pest of raspberries, which consists of a thorough examination of the stems and shoots of plants, and identifying the first symptoms of raspberries, be prevented.

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