The most common disease of strawberries:
Gray mold of strawberry
Fungus infects mainly fruits and flowers. Infected flowers turn brown and wither, and the fruits appear putrid spots. In place of infection is growing gray, dusty air raid conidia. Development of the disease favors moist and warm weather.
White leaf spot of strawberry
Symptoms initially appear as small, brown spots, which, as the widening are gray-white, surrounded by a red-brown border. Occur mainly on the leaves and sepals that the strong electric wither. Sometimes, especially under cover, symptoms may occur on the fruit (dry, small spots around the infested seed).
Red leaf spot of strawberry
Symptoms occur primarily on leaves and sepals in the form of numerous small, brunatnobrązowych stains. The first symptoms appear on the older leaves. Attacked by the leaves turn yellow, blush and quickly wither.
Symptoms usually occur at the annual plants. Initially wither and die oldest, outer leaves, and then the whole plant. The massive dieback of the plants is usually observed after planting susceptible varieties of strawberries in a highly polluted area (the position of the crops of vegetables, potatoes, strawberries). Fungus infects the roots from which transcends the crown and petioles resulting in a dry, well visible necrosis of their base.
Powdery mildew of strawberry
White, floury raid is strongest on the lower side of the leaves, which characteristically curl up łódkowato up. The raid mycelium and conidia may also cover other bodies terrestrial plants. On heavily infested leaves formed extensive necrosis, sometimes reddish-brown stains visible on the upper side of the leaf. In a particularly large volume of powdery mildew is present in crops under cover and on the cuttings on the plantations mother.
Mushrooms are stunning all terrestrial bodies strawberries. Large severity of the disease is observed in hot and humid years. As a result, electric develop dry, dark necrosis, which (under wet conditions) visible light pink conidia concentration. Paralysis of the crown strawberries, which develops dry, light brown rot, causing rapid decay of plants.