The Ability of Plant Pathogenic Microorganisms to Survive in Soil a Summarizing Reflection

摘要: Summary The importance of soil as inoculum source for plant pathogenic bacteria and fungi is stated. Plant parasites have developed several modes survival in absence host plants. For many them the essential. By examples, differences between real soil-inhabiting species having only randomly invaded are described. Parasites continuously occurring organisms with a typical stage their life cycle cause so-called soil-borne diseases. these pathogens, most essential source. In 2nd part paper important kinds residues mentioned: — infection alternative plants commensalism microhabitat rhizosphere entrance saprophytic way production resting cells (bacteria) or special organs (fungi) this connection, physiological abilities providing long structure causal agents discussed. Finally, possibilities to influence pathogens by agricultural measurements an compound integrated protection considered.