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News Brief

Aug. 12, 2013MO |  By: Mullens

Herbicides in Composts

A newer generation of herbicides that can damage and sometimes kill garden vegetables, flowers, and fruits are showing up in one of the worst possible places...

composts. New compounds in herbicides that being sprayed on pastures to kill obnoxious weeds. The herbicides cause no harm to the animals who eat the plants sprayed with the new compounds, however they make it from consumption to manure intact. Horticultural Specialist for the University of Missouri Extension David Trinklein says this becomes an issue if gardeners use the manure in their compost and unknowingly add it to their garden soil.

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Trinklein adds that these herbicides can show up in mulch also, and once soil has been contaminated it could take up to two years before the chemicals break down.