Common herbs and spices show promise as an environmentally-friendly alternative to conventional pesticides, scientists have told a major US conference.
They have spent a decade researching the insecticidal properties of rosemary, thyme, clove and mint.
They could become a key weapon against insect pests in organic agriculture, the researchers say, as the industry attempts to satisfy demand.
The "plant essential oils" have a broad range of action against bugs.
Some kill them outright while others repel them.
Source: BBC News
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