Cotton Morbidity by Verticillosis Depending on the Load of the V. Dahliae KL Fungus

Cotton wilt damage volume and intensity is highly dependent on the amount of infection in the soil. Even wilt-resistant cotton varieties fall ill in large amounts with relatively high soil saturation with fungus. Accumulation of a large amount of infection in the soil is often the reason that relatively resistant varieties in natural conditions become very sick with wilt. At the progression of the disease, it is often concluded that the bred new resistant varieties have lost their original resistance due to a change in the virulence of the parasite, which, as some researchers assume, to adapt to the newly bred varieties