Mosaic

Viral diseases, grouped under the general term "mosaic," represent one of the most complex problems in modern plant cultivation. These pathogens are capable of infecting a wide range of agricultural and ornamental crops, causing irreversible changes in their physiology and development. For agronomists and greenhouse specialists, the timely recognition of symptoms—from specific leaf spotting to the deformation of reproductive organs—is a critically important skill. Infections not only reduce the market quality of produce but can also lead to the loss of up to half of the potential harvest, which is why understanding the biology of viruses and the mechanisms of their spread lies at the foundation of a successful plant protection strategy.

This collection gathers expert materials dedicated to the diagnosis and prevention of viral diseases. The reader will find detailed information on the pathogenesis of TMV, cucumber mosaic, lettuce infections, and tomato streak. The articles cover key transmission routes of phytopathogens, including seed-borne and mechanical methods, and also offer practical techniques for disease control in greenhouse operations. In addition to viral damage, the materials examine related issues of phytopathology, such as methods for assessing damage from nematodes and protecting ornamental crops from fungal and bacterial infections. The presented content will help structure knowledge about the infectious process and implement effective measures for controlling harmful objects.