image: Irina Shtangeeva is a researcher at the Department of Soil Science and Soil Ecology, St Petersburg University. She has studied the ability of wheat and couch grass to accumulate toxic ...
Other species, like couch grass or quackgrass (Elymus repens), grow densely-seeded flowers, which can amount to a few dozen seeds per plant. If not properly identified and treated early, this ...
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