Roses: disease and treatment. Grow a healthy and luxuriant flowering plant

Rose - this is a beautiful, but quite capricious in terms of care flower. Numerous pests and diseases can undermine his "well-being", and in serious cases lead to death. Therefore, any grower who grows roses should know the basic agricultural techniques and ways to protect plants from pathogens and various pests. In this article we will consider the following topic: "Roses: disease and treatment".

In general, all diseases of roses are classified as non-infectious and infectious, and the latter in turn can be caused by viruses, bacteria or fungi. The most dangerous are fungal diseases of roses, such as: powdery mildew, gray mold, black spot, infectious burn, powdery mildew and rust.

Roses: diseases and treatment of fungal diseases

Powdery mildew is considered one of the most serious diseases of roses, the causative agent of which is the sph fungus. Pannosa lev. Recognize the disease can be a characteristic arachnoid white or powdery coating on leaves, shoots, buds. With the development of the disease, numerous spores of the fungus are formed, which are carried by the wind to a large area. The flower quickly withers: the leaves wither and crumble, the shoots die, and eventually the plant can die without experiencing wintering and rose disease (photo shows the defeat of the flower with powdery dew).

To prevent damage to the plant fungus should be periodically prevented:

• To process plants with infusion of ashes (it is insisted for 5 days: 1 tablespoon per 10 liters of water);
• Sprinkle with infusion mullein;
• To process with solutions of potassium permanganate (2.5 g per 10 l) and soda ash (40 g of soda and soap and 10 l of water).

When the first signs of fungal damage to the rose should be treated with a solution of copper sulfate 1% and must be cut off the diseased areas. Gray rot is another heavy fungal infection that mainly affects buds and flower stems of roses. Most often suffer tea-hybrid rose and floribunda. The causative agent of the disease is Botris cinerea pers. The disease looks like a gray coating on the parts of the plant. Methods of prevention and treatment are similar to the technique of getting rid of powdery mildew.

Roses: disease and treatment. Infectious lesions

Black spotting (pathogen Marssionina rosae) is another of the severe fungal infections affecting the leaves of the flower. They appear brown spots, blackening afterwards. On these spots, bubbles form, and eventually the leaves fall off. In the absence of proper care, a rose can lose most of its foliage. They struggle with black spotting as well as with other diseases arising from fungi.

Infectious burn, the causative agent of which is Cniothyrium wernsdorffiae, is more common in plants under excessive moisturizing and elevated temperatures in winter shelters. Recognize the disease can be by characteristic spots of brown color with a red border. To prevent disease, it is necessary to cover roses for the winter only in dry weather, and also to process them with copper preparations. In addition, during the entire vegetation period, you should monitor the roses and remove all affected areas.

Rust of roses is a disease that affects almost all parts of the plant. As a rule, repair varieties suffer from this infection.

Roses: disease and treatment. Non-infective lesions

Often the poor state of health of a plant and even its death can be a consequence of disturbances in the diet and watering. One of the causes of yellowing the leaves and drying their edges is a lack of potassium. With a serious deficit, the leaves can acquire a reddish-violet hue. Later, not only the leaves die, but also the stems of flowers.

As a rule, the shortage of this element is observed in plants growing on peat and sandy soils. The solution to this problem is to feed roses with potassium fertilizers (calimagnesium, potassium sulfate or complex additive). The lack of another trace element - magnesium - appears as discolored spots, formed on old leaves. Often the lack of magnesium occurs in plants grown on acidic soils. Treatment consists of making ash and complex fertilizers. Another serious trouble is the lack of iron. You can recognize it by the yellowing of the leaves, which starts from the edges. If the disease progresses, they can acquire milky white color and fall.

The fight against iron deficiency consists in the introduction of organic (rapidly decomposing) and acidifying fertilizers, as well as in the dressing of iron preparations, for example, will help "Kemira Universal". Lack of calcium also has a bad effect on the development of the plant: its root system is weak, the stems gradually die off, the buds do not dissolve, and the leaves are twisted and bent. Fill the deficit of an important element can be, using calcium nitrate. So, we listed the main infectious and non-infectious problems of the rose. Diseases and treatment of plants grown at home, we consider further. In fact, a room flower can easily die from the same pathogens of infection or disturbance of growing conditions, as well as open-ground plants.

Home Rose: care, diseases, pests

The indoor beauty is often affected by rust, powdery mildew, black spotting, and downy mildew. To treat mildew, you can use a solution of soda (2 tsp per 1 liter of water). During the procedures, it is necessary to cover the soil with polyethylene, so as not to damage the roots. Often, indoor roses are attacked by pests such as a spider mites, rosy aphids and thrips. Special insecticides are used for treatment .