How long will a biopesticide survive in the soil when drenched?

The soil is the natural habitat of a biopesticide and it may persist for several months, declining in concentration over this time because of strong competition from other microbes and soil insects that feed on fungi in the soil. However, the declining biopesticide microbe population in the soil may not provide as effective crop protection against soil pests and diseases. So regular weekly applications may be necessary to provide the required level of crop protection.