Integrated pest management: sterilized pink onion flies in onion crops
Ten years after they were first introduced on a large scale in onion fields in Montérégie, sterilized pink onion flies have successfully replaced a controversial insecticide, while generating a dramatic reduction in the natural populations of onion maggots (Delia antiqua), the main onion pest in Canada.
The sterile insect technique (SIT) works in a surprisingly simple and ingenious way. It essentially uses one pest to combat another. To do so, onion flies that are factory reared and sterilized through irradiation ahead of time are released into fields.