Agriculture
Opinion
Beware invasive, ‘frightening’ waterhemp
4 minute read Yesterday at 2:01 AM CDTThere’s a threat lurking on the edge of Manitoba farmers’ fields this fall that’s even scarier than the escalating trade war with their biggest customer.
Provincial extension advisers are warning farmers to watch for a weed known as “tall waterhemp,” which, true to its name, may already be towering above ready-to-harvest crops.
Those wispy tentacles waving in the breeze look pretty innocuous from a distance. But this highly invasive member of the pigweed family produces hundreds of thousands of seeds that are just itching for dispersal through farmers’ combines and across their fields.
Each of those tiny seeds — one small pill container filled halfway holds 44,000 — can produce plants with stems the width of saplings and heights of two to five metres. One or two plants can quickly turn into a patch. If waterhemp takes over a field, it can choke out the growing crop and cut yields by more than 90 per cent.
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