Fungal disease - gray rot affects not only the berries, but also the bush. During the rainy season and in wet weather, this disease can destroy most of the crop. Spores of the fungus that excite this type of disease are in the soil and are not afraid of low temperatures and drought.
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- A sign of the appearance of this disease is the appearance of dark, slightly depressed spots of on berries.
At the site of the stain, the tissue of the fetus softens and becomes sluggish and watery. The fruit loses its inherent aroma, characteristic color and taste. For a short period of time, the spots spread, and a gray patina appears on them.
. Berries rot and thus spread spores, infecting nearby growing healthy bushes in the garden. This disease can appear not only during the fruiting period, but also during the flowering period, affecting the flowers. The greatest danger of this disease is during storage .
In an unventilated humid room with a high temperature, gray mold spreads very quickly and affects fruit.Causes of rot and ways of spreading the fungus
Spores of a fungal infection are constantly in the air and in the ground, but for the spread of this disease the following conditions are necessary:
- The wrong choice of for planting. The bed for the growth of strawberries should be illuminated by direct sunlight and well ventilated. In poorly ventilated beds, the spores of this disease develop quite rapidly;
- Too thick landing. Growing, strawberry bushes form a shadow, why the earth is enough under them and does not warm up, and there is not enough air access. In this case, to eliminate this problem, strawberries need to be planted;
- Excessive humidity .During the period of rains or heavy irrigation, an increased humidity is formed, which causes the spread of the fungus. Loosening the soil and sheltering the strawberry beds during frequent rains will help avoid contamination;
- A large number of weed .The presence on the garden of a large number of weeds limits the access of fresh air and prevents good blowing of the garden. It is necessary to timely weed the beds;
- Mechanical damage to .Fruits damaged mechanically, as well as slugs and insects very quickly become infected with this type of fungus.
. Methods to combat gray rot.
.Throw infected berries can not. Fungal spores are spread by wind and infect healthy plants.
- With a strong thickening of the plants, it is necessary to remove the excess leaves and to thin out the frequency of the bushes. The introduction of ash in the ground under the bushes and pollination of plants. Temporarily stop watering until the topsoil is dry.
- Feed the bushes with the following solution:
- water - 10 liters;
- manganese - 2 grams;
- boric acid - 2 grams;
- iodine - 20 drops.
When processing it is necessary to touch the lower surface of the leaves.
- Mandatory exclude contact of the fruit with the ground .To do this, you can do mulching with straw or pine needles, tie up the bushes, using special frames for these purposes.
Fighting gray mold with chemical preparations.
- A sign of the appearance of this disease is the appearance of dark, slightly depressed spots of on berries.
Treatment is necessary to conduct three times. :
- as soon as the leaves start to grow;
- after tying the buds;
- after the entire crop is harvested.
It is recommended to carry out the treatment with these preparations:
- "Chorus" at temperatures above +3 degrees reaches the highest efficiency until high temperatures are established. With the onset of heat the activity of the drug increases, but this significantly shortens the period of action. According to this treatment must be carried out at the very beginning of the season.
- "Teldor" is used to protect berries during transportation and storage. When released onto the surface of the drug forms a thin film that protects against penetration into the tissue of the infectious agent.
- "Switch" prevents the appearance and spread of fungi, suppressing their activity. It promotes better storage of fruits.
Use of folk remedies
For combating gray mold effective folk remedies are:
- Iodine Solution .In 10 liters of water, dilute 10 drops of iodine and spray it when a disease is detected and as a preventive measure. Spraying is carried out 1 time in 7 days.
- Mustard .In 5 liters of hot( non-boiling) water dilute 50 grams of dry mustard powder. Insist for two days, strain, dilute with water in a ratio of 1: 1 and process the strawberries in the spring with this solution.
Preventive measures
Preventive measures to prevent the disease include:
- Timely removal in the weeds;
- Soil with ash or lime ;
- Processing bushes Bordeaux fluid ;
- Removal of foliage from the bushes after harvest. It is necessary to carry out the removal in advance so that before the onset of frost new leaves grow on the bushes;
- Change the place of growing strawberries every three years ;
- Do not leave ripe berries on the bushes;
- Remove immediately diseased berries from the bushes and drop them in;
- Mulch beds with pine needles or dry straw.
. Specialists' advice.
. To save strawberries from the appearance of gray rot. Experts advise:
In order to protect strawberries from gray rot infection, it is necessary to create proper conditions - well heated and ventilated beds. A patient and caring care reward good harvest of ripe and healthy berries.