Plant infectious diseases - why a rainy summer is dangerous

Do you like flowers ?! Summer is ahead, what to expect if it rains again? How to protect your pets, to anticipate infectious plant diseases? It is good when the balance of sunny days and when it rains in moderation and on time. But if they become frequent, the soil will become waterlogged and problems will begin. Ornamental plants planted with healthy bulbs in over-saturated soil are at risk of losing all leaves, even the stem. Fruit trees and shrubs do not tolerate such conditions, especially if it rains constantly. For example, roses, barberries, or decorative apple trees - their roots will get wet very quickly.

Why is a rainy summer dangerous?

Plant infectious diseases: photo

How interesting is Mother Nature rightly arranged! While the plants are sleeping in the fall and winter, at least how much moisture is there, it is still not scary. But with awakening, any excess moisture can be destructive. On days of heavy rains, the soil is saturated with water, from depth to surface. There is no room for air in its usual pores. Roots, their absorbent hairs have nothing to breathe. They have oxygen starvation and death. As a result, the ability to eat in the usual way, the roots are deprived. Thick roots rot and die off if the soil is waterlogged for a long time. This is caused by acidification and, as a consequence, waterlogging. If the roots began to die off, the crown, its appearance, will show this. Shoots stop growing, leaves turn yellow and then brown. Inflorescences fall without developing.

In winter, in severe frosts, it is difficult to resist shrubs and trees, and they turn out to be weakened by the consequences of prolonged summer rains. The success of the survival of plants in unfavorable conditions, when the summer is wet and rainy, which happens quite often in our area, should be our help. If you worry in advance before planting shrubs of trees, then it is worth making drainage, in the lowlands, drain water using ditches. Alternatively, raise the plot, its level. Shrubs and trees of miniature varieties are in priority. Their roots are located closer to the soil surface. And of course, agricultural technology! The soil must be loosened regularly. The roots gain access to air. Plants will benefit from this.

Mass infectious plant diseases

Parasitic fungi and plant infectious diseases that cause them develop in rainy summers. Water helps in this, transfers and stimulates. Scab, rot and spotting, powdery mildew and downy mildew affect ornamental plants in the first place. A decrease in decorativeness, a weakening of immunity and even the death of plants are these diseases.

Plant infectious diseases: photo

Powdery mildew. Ornamental plants are the first to suffer. Powdery mildew, a fungal disease that eventually covers the shoot, is the body of the fungus. An unsightly picture. Underdevelopment and curvature of shoots, twisted leaves, having become infected, die and fall off from damage.

Downy mildew - another infectious plant disease. Leaves covered with yellowish spots, this is how downy mildew manifests itself. Then, after a short time, a mealy bloom, still faintly noticeable gray on the leaves, from the underside. Further, the spots growing and completely covering the entire leaf are a sign of an imminent end. The stems are affected and twisted.Rose and primrose, poppy and cornflower, onion and levkoy, foxglove, the first objects affected by this disease.

Another group of mass infectious diseases is a plant - blotches... Leaves, in spots, of various shapes, sizes and colors, often have a border along the rim, dark in color, a very characteristic feature. The fungus is visible on the surface. Leaves affected by the disease age prematurely. They can look like autumn as early as July. Their fate is unenviable, they fell ill and crumbled ahead of time. In conditions where there is excess moisture in the air and on the soil, rot is especially harmful. It is simply painful to look at the plants, they are all brown and yellow spots, grow poorly, lag behind in flowering and fruiting. They often rot and eventually die. Mushroom bloom of brown, white, maybe pink, at the initial stage, color. Tubers and bulbs, roots are often affected. Still annoying phomosis, was noted on phlox. Recessed landings were the cause.

Fusarium guilty of rotting hyacinth bulbs and roots. Heart rot, brown marked on gladioli, attacks the bulbs at the core. Penicillous rot was noted on geocynts and again on gladioli. A green fungus bloom covers the aerial parts of the plants.

Plant infectious diseases: photo

Such massive plant infectious diseases as root rot remind of themselves, appearing on the leaves. This manifestation begins on the lower leaves, which is closer to the ground. The root collar at the base of the stem turns brown, and the stem itself splits and cracks. High humidity, coolness show bacterial infections. Ornamental plants get sick.

Irregular dark brown or black spots, round and convex on leaves, stems, flowers and fruits, this is a manifestation bacterial spot... Bacterial spots differ from fungal spots by the presence of an oily halo. Root rot, caused by bacterial nature, does not allow plants to grow, bloom, we observe yellowing and wilting. Young shoots do not grow, they become brown and completely disappear. Both underground parts and bulbs and roots rot. Soft bacterial rot is marked by an unpleasant odor. The plant bulbs first wither, turn yellow and completely rot.

Protection against plant infectious diseases

Preventive actions to protect against infections, fungal and bacterial, this is what ornamental plants need in the first place. To avoid waterlogging of plants, the soil should be kept in proper form, loosened and even, if necessary, dug up. In advance, even during planting, it should be remembered not to allow thickening. Form the crown in a timely manner. Excess nitrogen will not be beneficial, but potassium is something that needs to be applied regularly. Liming deacidifies the soil. Trunks and branches must be kept clean, treated and free from open wounds. You can use lime, garden var, oil paint.

When storing and periodically check the cleanliness of the bulbs and tubers, immediately rejecting unsuitable specimens. Temperature and humidity conditions are an important component of success. In order for the seed to be worthy and to please us with friendly, healthy seedlings and, subsequently, well-developed plants, everything must be done on time. Then disease won't stand a chance.

Plant infectious diseases: photo

But if, nevertheless, one of the stages has been missed and infectious plant diseases have spread, various drugs are offered to help. The choice is great. But what has been tested and gives a good result, both from fungal and bacterial diseases, copper oxychloride, Bordeaux liquid, iron vitriol, Kartocid, Fitosporin-M and many others. I would also like to note the drug Topaz, which has shown itself well.Terms and dosage for use can always be found on the packaging. You should always have them on hand so that at the first sign of illness you should be ready for action. Do not give a chance to possible unexpected surprises in the form of disease.

Plant infectious diseases: preventive measures

There are simple rules, knowledge and observance of which will help to meet spring in a good mood and prevent a massive infectious plant disease. Keeping bulbs, tubers and corms healthy as a result of wintering will contribute to planting success. Good ripening of bulbs and tubers is the main component of the future harvest. We add nitrogen at the beginning of the growing season. Phosphorus and potassium at the flowering and fruiting stage. If for some reason there is a delay in flowering, as happens, for example, in gladioli, it is better to remove them. Thus, conditions will be created for the full maturation of the corms.

After the first frost, the tubers of dahlias, cannes and begonias should be removed for storage without delay. Otherwise, there is a risk that dormant buds will grow. Bulbs and tubers should be carefully examined. If necessary, process with brilliant greens, brilliant green, in a simple way. The stored materials must be cleared of the ground, washed, and rejected. A good disinfecting effect is given by dipping in a solution of potassium permanganate. Enough 20 minutes at 0.15% concentration. A 10 minute dip in 55C water will help. The drug Maxim also worked well. An obligatory operation is drying after wet processing. The temperature and humidity conditions must be observed. Each culture has its own storage characteristics.

Plant infectious diseases: photo

External examination and culling of diseased specimens should be carried out once a month in order to prevent the spread of infectious plant diseases. If there are especially valuable ones, you can heal by cutting off the affected areas and further processing them with brilliant green or charcoal. It is important to separate them from the bulk for separate storage.