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Weed Ecology and Management

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Research - Seed Rain Project

Here Rob Johanson is sowing a fall cover crop using a no-till drill to keep weed seed rain from the preceding crop at or near the soil surface and available to weed seed predators which we experimentally exclude using the mesh cages shown. We have found predation losses as high as 50% over the fall, winter and early spring months. Somewhat unexpectedly, this treatment has also experienced very high levels of losses due to seedling recruitment. This project is supported by the Northeast SARE competitive grants program.

Image Description: Rob Johanson sowing a cover crop

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Contact Information

Weed Ecology and Management
205 Roger Clapp Greenhouse
Orono, Maine 04469
Phone: 207.581.2933 | Fax: 207.581.2999E-mail:
The University of Maine
Orono, Maine 04469
A Member of the University of Maine System