The signs of the development of leptosphaeria on winter rape

The article describes the signs of the development of Leptosphaeria on plants of winter rape. The disease causes mushroom species of Leptosphaeria: L. maculans and L. biglobosa. When the rape of L. biglobosa is affected, the external signs of stalk damage are often absent. Symptoms of the disease on the leaves differ: necroses caused by L. biglobosa, of smaller size, with fewer pycnidia or completely without them. The defeat of Leptosphaeria sharply increases when the leaves of rape are damaged by larvae of Ceutorhynchus.