The Disease Cycle 1. Establishment of infection 4. Growth and reproduction of the pathogen 6. Dissemination of the pathogen 7.
Number becomes very large.
Fastidious bacteria and mycoplasmas reproduce much slower than bacteria and are usually in lower numbers in the plant. Viruses and Viroids-reproduce in the individual cells. 10 million virus particles per cell. Two to 12 generations produces per year. Each generation increases the number of nematodes in the soil by 100 fold.