The formation of brown, purple, raspberry and white spots on a garden strawberry is the first symptom of fungal infection. Fungal disputes winter in surface layers of soil, and as soon as the conditions are installed comfortable for them, namely the increased humidity, excess nitrogen and the lack of ultraviolet, begin to multiply intensively. Deals may affect all parts of the plant: roots, stems, as well as leaves and even berries.
Treatment of Ramulariosis
One of the most frequent reasons for the formation of stains on strawberry leaves is ramularity. The first sign of pathology becomes small red-brown formations on leaf records. As the infection develops, they begin to gradually grow and brighten in the center. Soon, the bright area suits, disappears, and the leaves become degraded. From the sheet plates, the infection goes to stems and flowers, and from there sent to the roots. In the absence of treatment, the bush dies very quickly.
Peak activity fungus falls at the end of May – June, at the time of flowering garden strawberries. At this time, disputes are transferred to the wind and insect pollinators. Prerequisites for the development of infection are increased humidity, excessive thickening landing and hot weather. The risk of ramularity is that this fungus easily tolerates even the most severe winter. And to affect the garden culture, it can not only in open areas, but also in greenhouses.
Ramularity extends very quickly and is able to destroy all strawberry plantation in a matter of weeks. However, if you quickly begin treatment, it can be heal.
- To begin with, it is necessary to disrupt the fallen amazed fruits and leaves. If the root system is affected, the plant sprinkle does not make any sense, it must be digging and burned.
- For the treatment of bushes irrigated, and the ground is shedding with a mortar of burgundy liquid 1%. It is necessary to do it before the start of flowering, as well as in the period after fruiting.
- A good preparation against fungus is “Ridomil”, For the treatment of landings, it is divorced at the rate of 25 g of powder on the water bucket.
- Not bad effect give preventive measures. To prevent infection, it is necessary to regularly cutter the beds and carefully approach the soil feeding with mineral fertilizers.
How to deal with brown spot?
Another common alert – bright spot. First of all, the stains are formed at the edges, after which they quickly grow across the entire sheet. Later on them form areas with disputes fungus, they have a dark color.
Most active fungi in the conditions of population of landings, lack of sun and high humidity rays. When infection, amazed bushes should be destroyed. Healthy fit for prevention spray with 1% burgundy liquid or copper vitrios. For the period of treatment it should be eliminated by nitrogeny feeding and reduce irrigation. After fruiting the bushes of strawberries shed “phytoosporin”.
To prevent the development of infection, it is necessary to delete all the overwhelming foliage in time. It is very important to fight the garden insect pests that become dispute. A special role is played by the mulching of the plantation, it is best to take a straw or ash for this.
How to treat deciduous rust?
Deciduous rust – common fungal infection, which is manifested in spring time. The causative agent causes the appearance of yellowish spots, over time they are darker and acquire a rusty color. The lesion zone quickly grows over the entire surface of the leaf and increases in the volume, reminding moldless rings of the redhead. Steel and leaflets dry, berries are suspended in growth and ripening. If you quickly do not accept operational measures, the infected bush will quickly wage, and the fungus will turn to other plants.
When rust appears on a strawberry bed, you should sit under the bush film, put on the hands of the gloves and cut all damaged sheets and root stalks. Infected greens burned, It is impossible to bury it into the ground, otherwise the fungus peers in the ground, and with the arrival of spring again attacks cultural plants. After trimming, there is a spraying of garden strawberries by bordrian liquid or systemic fungicides (“Titan”, “Agrolekar”). With a large zone of damage, all plantations spray with fungicides. But it should be remembered that they may contain toxic copper and mercury to people, so they are used only after the fertility period.
As a preventive measure, it is necessary agrotechnology. Timely weeding, the removal of weary herbs, the mulching of the beds and the introduction of ash – these simple measures will significantly reduce the risk of fungal lesion.
The effective measure of the prevention of rust will be the observance of crop rotation, strawberry bushes are undesirable to grow in the same place longer than 5 years.
Treatment of other diseases
Other fungal diseases can be the reason for the appearance of spot.
The antraznosis in the people is called black spottedness, since it is accompanied by the formation of a large number of brown spots on sheet plates. In the course of the progression of infection, they merge among themselves and become almost black, the surface of the mustache and young stems is covered with ulcers. Especially often antraznosis arises in the greenhouses, it strikes all parts of the plant: leaves, flowers, berries, shoots and root. This type of fungus can easily withstand external adverse factors. It feels comfortable with humidity parameters from 90 to 100% and temperatures from 20 to 28 degrees Celsius. But the temperature above 32 ° C is destructive for him.
When the first symptoms of infection of the plant are treated with fungicidal agents – “Signum” or “Metaxil”. The working solution is made up of 40-50 g of the preparation, divorced in a bucket of water. Save the infected bush can be if only sheets are damaged. When the infection throws on shoots, cutters and roots, such a plant remains only to destroy. All neighboring bushes spray with fungicidal solutions for prophylaxis, in this case, the working concentration of the active substance is reduced by two times.
This infection is transmitted through the root system. The first pathology signal will be an education on the leaflets of brown spots. Soon the leaves are yellow, twisted, and the shoots acquire a brown tint. As the inconsishes are aggravated, the roots begin to die – it leads to the fading of the entire bush. If you quickly do not take action, then fungus for several weeks will destroy up to 60-80% of plantation.
Cured bush can be in an early stage. To do this, it should be processed by fungicides, the greatest effect gives “Phytosporin”. To prevent infection, you should choose seedlings. Locked bushes should not have signs of fungal lesion. Also, the likelihood of fusariosis increases sharply if the strawberries are planted on the garden, where tomatoes or potatoes have previously cultivated.
Draw attention to the fact that fuzariosis can be dangerous. These fungi are isolated into the air of mycotoxins, which have a negative impact on the central nervous system of people and lead to domestic deaths.
The reason for the appearance of red spots is Marssonina Potentillae fungus. Small color changes first manifest on the lower sheets of the bush. But soon the stains grow and change the color to Bordeaux. They are distinguished on them with a naked eye – black points are distinguished – they are disputes in them. If the spottedness covered a large leaf area, then save this bush is not possible. It is subject to digging and burning. All the growing nearby strawberries should be treated with Falcon Funhibitions or “Oxico”.
The high humidity and neglence of strawberry plantations contributes to active spread of fungus. To prevent the activity of the fungus in the spring, only will only come down, the churches of garden strawberries should be treated with a solution of 1% burgundy fluid. The pathogen usually winters in last year’s foliage, so it is extremely important in the fall, even before the snow falling, clean the garden plot from fallen leaves.
In addition to infection, the leaves dry and be covered by burgundy stains when the soil is acidified or the lack of phosphorus. To facilitate the state of the plant, it is necessary to spray plantation Scroll with chopped wood ash.
By the way, it will become good prevention of fungal lesions.
In general, allocate general measures to combat fungal lesions of strawberries.
- Get rid of stagnation moisture on plantation.
- Regularly spend sanitary planting.
- Do not abuse nitrogen-containing feeders, it is better to focus on potash and phosphorus.
- Before bootonization and flowering, as well as after fruiting, treat the bed with copper vitrios.
- If you notice that spotting captured a large area, use fungicides. Processing needed both external and inner part of sheet plates.
To prevent the appearance of spottedness, you should adhere to the basic rules of agrotechnology.
- Use only healthy seedlings, Plant-resistant fungquets.
- Break strawberry beds on the outdoor sun dry plots. It is best to organize a high bed – in this case, excessive moisture will not accumulate in the ground.
- Timely reload landing, If sick bushes appeared on the plantation – remove them with the root and burn them.
- Fight insect pests – They become reversed disputes, for this you can use gentle folk remedies.
- Adhere to the rules of the crop rotation. If the garden strawberry was infected with fungus, then it is not possible to plant it for the previous place not earlier than 5 years later. The best predecessors will be carrots, garlic and beans. But the plots where eggplants, corn and tomatoes grew, should be avoided.
- Do not land strawberries in fresh manure / litter – You need to take a reworked.
Selection of healthy, strong seedlings, accurate compliance with the rules of agricultural equipment and periodic inspection of strawberry beds will prevent the formation of spotting on leaves or help get rid of fungal infection at the initial stages.