How to grow a healthy garden: why raspberry leavesturn yellow in the summer. What to do when raspberry leaves curl andturn yellow

Пн, 11 июл 2016 Автор: Юлия TOривенко

In the fall, raspberry leaves start to turn yellow, it’s a natural process,
which should not be alarming. But many gardeners often complain
что листья кустарника turn yellow и скручиваются летом, до созревания
berries or at the time of harvest. This phenomenon is not considered normal and
pay close attention to the problem of yellowing leaves
at raspberry.

Contents

Causes of yellow leaves in the raspberry summer

There are several main reasons why the leaves
shrubs begin to turn yellow and curl:

1. Raspberry Root Cancer

The cause of the yellow leaves is often the root cancer of the plant.
A disease affecting the roots of raspberry can be easily identified by
appearance and condition of the plant. First gardener
should guard the dwarf young whips that are not
develop yellow leaf color in summer. On the roots of such a bush
pathogenic blisters can often be detected. Crop loses its
taste, becomes tasteless.

It is impossible to treat the disease. Raspberries are not processed
chemical preparations, shrubs uproot and burn.

Important! In the area where found
damaged bushes, planting raspberries do not spend over the next
eight years old.

Planting raspberries can be protected from root damage
cancer preventive measures:

  • It is necessary to monitor the cleanliness of the beds, timely remove weeds,
    loosen the aisles.

  • It is better to land the raspberries after legumes.

  • It is not allowed to overmoisten the soil and the formation of a crust, after
    watering must necessarily loosen the ground around the bush.

  • When transplanting old bushes be sure to inspect
    the presence of disease. Planting material is soaked for several hours.
    in a solution of copper sulphate.

  • Prevent root disease will help fertilizer. Raspberry needs
    in the timely application of phosphate-potassium fertilizers and
    humus

Using comprehensive measures in the fight against root cancer can
save the raspberry harvest.

2. Jaundice on raspberry

A common raspberry disease is a yellow mosaic or chlorosis,
in people – jaundice on raspberries, is an infectious disease.
This disease progresses rapidly and is capable in a short time.
ruin the whole crop.

Chlorosis on raspberries can be determined by the condition of the shrub and
shoots during the growing season. First signs of failure
appear immediately with the onset of plant growth. Leaves on young
shoots up to two years turn yellow, more apical suffer
the kidneys. The color of the stalks, brushes and lashes is also changing. Shoots
Thin and stretch, the berries dry out.

На начальной стадии поражения листья turn yellow не полностью,
stains appear. The shape of the leaves themselves does not change, but they cease
evolve and remain small.

Raspberry jaundice causes a general depression of the shrub, decreases
its productivity, but total loss does not occur.

The fight against the disease should be aimed at strengthening
plant immunity.

  • For planting use only healthy material.

  • To inspect shrubs in a timely manner, to identify damaged
    plants and carry out treatment.

  • It should be remembered that the plant immunity is greatly reduced if
    it is affected by aphids and other sucking insects. Spend
    spraying against pests.

  • To make mineral and organic fertilizers for planting.

Further development of the disease occurs during the period of the appearance of berries,
когда листья полностью turn yellow. After harvesting the disease
it subsides for a while, but in the fall its course is aggravated.

3. Noninfectious raspberry chlorosis

Often, shrub disease is associated with climatic conditions and
soil condition. Листья малины turn yellow и отмирают.

Non-infectious chlorosis does not inhibit the growth of healthy shoots, leaves
on them are bigger. Flowers and raspberry tassels shrink, berries
get bad taste, often dry up. Affected bushes
practically do not grow in length, by the end of the season they become strong
thickened.

The disease is easily treatable, enough to transplant shrub
in a more suitable place. There is non-infectious chlorosis
because of the soil swampiness and high calcium content in it.
On sites with such soil before landing it is necessary to increase
soil alkalinity.

In early summer, planting is sprayed with a Bordeaux mixture, which
Beneficial effect on the general condition of plants. During
During the growing season, it is useful to introduce ferrous sulfate into the soil in
as a fertilizer.

4. Rust on raspberry leaves

The disease is caused by a disease-causing fungus that settles on
the underside of the leaves. At the end of spring from the back of the leaf
brown spots can be found, which further lead to
its yellowing and drooping. On the stems and shoots of raspberries are formed
brown ulcers.

For the purpose of prevention, spray the bushes with a 1% solution.
Bordeaux mixture. Affected plants must be destroyed.

To prevent the disease will help complex
measures:

  • in autumn, the remains of all leaves are removed and burned;

  • feeding is obligatory during the season raspberry manure;

  • in the garden planted more resistant to disease varieties.

Raspberry leaf curling: causes and methods of treatment

Raspberry leaves are often curled for some reason, which
indicate disease and pest damage. Set on time
leaf deformation facts allow you to safely get rid of the disease
and get a full harvest.

1. The lack of trace elements

Lack of nutrition often leads to curling leaves on raspberries.
Lack of nutrients, in particular boron, manifests itself
leaf deformation. To solve the problem of nutrition will help fertilizing
boric acid. To do this, prepare a solution for irrigation at the rate of 5
grams of boron per 10 liters of water.

The rotting of the sheet from below and its twisting is observed due to
lack of potassium. You can help the plant by feeding it with ashes.

2. Fungal anthracnose

This disease leads to curling of the leaves on the raspberry.
Recognize the disease can be on gray spots, dry twisted leaves.
and unripe fruits. With the defeat of the shrub are cutting all
sick shoots, after which the plant is sprayed with a solution
Bordeaux mixture.

General recommendations: what to do when yellowing and twisting
raspberry leaves

Many raspberry diseases that cause yellowing of the leaves and their
twisting occur due to incorrect location
shrubs and the acquisition of substandard planting material. TO
The question of planting raspberries on the site must be approached responsibly:
choose disease resistant varieties correctly positioned
landing.

At the first signs of the disease should not use chemical
drugs, it is better to use sparing substances. If the disease
progresses the need to uproot the plant and burn it.

It is important to remember that the carrier of many diseases is aphid,
therefore, it is necessary to fight the pest immediately after detection. WITH
the beginning of the growing season, the bushes are sprayed with a 1% Bordeaux solution
mixes. For the successful cultivation of raspberries need to regularly hold
pruning shoots. Good ventilation of landings is achieved.
growing on the trellis.

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