Pesticides can have (in)direct effects on natural enemies. Our side effects app tells you how harmful different pesticides are.
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Side effects on natural enemies
Pesticides can have direct effects, such as killing the natural enemies or causing their non-emergence from eggs or pupae, but they can also have indirect effects, such as reduced fertility (egg laying), problems with regard to moulting, or a repellent effect. Both direct and indirect effects have been considered in the assessment of the side effects.
Residual effect on natural enemies (persistence)
Many agents remain harmful for a certain period after application. In natural enemies, this persistence is expressed in the number of weeks during which the agent remains harmful for the natural enemies. Only after the indicated period can the parasite or predator concerned be introduced or reintroduced successfully.
The data in this database is based on various information sources:
Results of trials carried out by Koppert B.V.
Experiences of Koppert employees in the field, worldwide
(mainly relating to information about persistence)
Research results from the IOBC working group 'Pesticides and beneficial organisms'
Reports from research institutes (national and international)
Other sources, such as the websites of the IOBC or IPM Impact
Producers of pesticides