Levels of control reached with biological organisms are generally more dependent on
environmental conditions, such as climatic factors, than those achieved with conventional
pesticides. Beauveria bassiana has been tested in a wide range of pest control scenarios and has
been successfully used in many countries. While, under suitable conditions, efficacy rates of
Botanigard® can exceed 90 %, in many instances, a considerably lower level, but longer-term
suppression can be sufficient to prevent crop damage. It is important to recognize that biological
control agents such as B. bassiana significantly differ from chemical pesticides in their properties
and this should be taken into account when designing and reviewing efficacy studies.