Stationary Growth Phase

During this phase, environmental factors such as nutrient availability, temperature, and competition from another microbial population can limit and retard growth rate. Growth rate is affected because the number of microorganisms is frequently large enough that their metabolic by-products and competition for space and nourishment decrease proliferation.

Figure 1 Typical growth curve of bacteria.

The length of this phase ranges from 24 hr to more than 30 days but depends on the availability of energy sources.

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