Glyphosate
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Glyphosate is a broad-spectrum systemic herbicide and crop desiccant. It is an organophosphorus compound, specifically a phosphonate, which acts by inhibiting the plant enzyme 5-enolpyruvylshikimate-3
Glyphosate used as an alternative to mowing in an apple orchard in Kastelbell-Tschars, Italy
Landscaping company in Oklahoma applying a weed control product that contains glyphosate
Palmer amaranth (Amaranthus palmeri)
Horseweed
Erigeron canadensis
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Erigeron canadensis is an annual plant native throughout most of North America and Central America. It is also widely naturalized in Eurasia and Australia. Common names include horseweed, Canadian hor
Glyphosate
…has developed multiple mechanisms for glyphosate resistance due to selection pressure. Conyza bonariensis (also known as hairy fleabane and buva) and C. canadensis (known as horseweed or marestail) are other weed species that have lately developed glyphosate resistance. A 2008 study on the current situation of…
Erigeron canadensis from Britain by D Merrick 14
General form, may be light green, inflorescence fairly tight
Stemmy form
Flower head, hairless or mostly so, ray petals small but conspicuous, base of head not widely bulging