pro-pesticide

https://doi.org/10.1351/goldbook.16010
Substance applied in a form that is not active as a pesticide and which becomes active once it enters an organism and undergoes chemical modification.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1290 [Terms] [Paper]