MONITORING THE SPREAD AND DEVELOPMENT OF ROOT ROT IN CROP CYCLES

Abstract

Long-term (1996-2021) studies of root rot distribution in six-field field rotations of different types, with different degrees of saturation with grain crops were carried out. The studies showed that grain-grass and I fruit rotation demonstrates a higher level of root rot infestation. This is promoted by a high level of saturation of cereals in the rotations. Among the fruit rotation crop rotations, the lowest disease incidence shows III fruit rotation, which is due to the introduction of two fields of clover and a better rotation structure. The use of fertilizers significantly reduces the level of root rot infestation of crops. The spread of root rot in all crop rotations with the application of mineral fertilizers decreased by 2.3% (NSR₀₅ - 1.4%), compared to the natural fertility background. Introduction of clover, as well as oats and its mixtures with vetch into crop rotation allows to significantly reduce the prevalence and development of the disease and creates prerequisites for phytosanitary improvement of agro-ecosystems.