Mosaik is a late-maturing, single-seeded triploid hybrid sugar beet, intended for cultivation in the Central Chernozem region (approval zone 5). This hybrid is distinguished by its high root yield, averaging 426 centners per hectare, with sugar content in roots at 18.1%. The average weight of a single root is 484 grams, and sugar harvest reaches 78 centners per hectare. Over the years of testing, the hybrid has shown resistance to various diseases and pests: in the Middle Volga region, it was lightly affected by root maggots; in the Central Chernozem region, it exhibited moderate susceptibility to powdery mildew and cercosporosis, as well as increased activity of root maggots. In the Central region, the hybrid was lightly affected by root maggots but severely affected by cercosporosis.
One of the key issues in sugar beet cultivation, including the Mosaik hybrid, is the sugar beet mosaic virus (Beet mosaic virus). This virus causes the appearance of light-colored mosaic patches of various shapes on leaves, clearly visible through the leaf tissue. Infected leaf areas may become wrinkled, and the leaf blade becomes thinner and may curl. The virus is primarily transmitted by aphids, also by cicadas and leafhoppers, and persists in plant roots, leading to disease continuation in the second year after wintering. Primary sources of infection are infected sugar beet seedlings and overwintering weed plants that act as virus reservoirs.
To protect the Mosaik hybrid from the mosaic virus, it is recommended to apply a complex of measures, including spatial isolation of seed crops, pest control of virus-carrying insects, and removal of weeds that may serve as infection sources. Using only healthy fruits for seed production also helps reduce infection risk. Although mosaic symptoms may be less noticeable at temperatures above 21℃ and below 10℃, viral infection results in a 5-7% reduction in root yield, and seed yield loss on seed crops can reach 15-20%. Thus, the Mosaik hybrid combines high productivity with certain disease resistance, but requires careful monitoring of viral infections to ensure maximum cultivation efficiency.
