Waterhemp and pigweed species are difficult to differentiate, until they become larger – often past the ideal stage to control the waterhemp species. Mike Cowbrough, weed specialist with OMAFRA, says the herbicide programs identified by the University of Guelph Ridgetown campus, which are effective on waterhemp are equally effective on pigweed and other species. “There […] Read more
Tag Archives waterhemp — page 2
Waterhemp difficult to distinguish from pigweed
Using herbicide programs effective on pigweed, should cover waterhemp too, so far
Glyphosate resistant waterhemp moving across Ontario
With its method of pollination and resistance abilities, the weed is becoming harder to control
Glyphosate-resistant waterhemp is now present in seven counties across Ontario. Huron, Wentworth and Haldimand are the three most recent counties where it was found, in addition to the previous Essex, Lambton, Chatham-Kent and Middlesex counties. Seeds were harvested harvested in fields in these counties last fall, planted in a greenhouse to overwinter and tested once […] Read more
Cyber-Savvy Farmer
