Inland Valley Daily Bulletin
Herbicide-resistant weed irks farmers
By Juliana Barbassa
Associated Press
PARLIER - Horseweed was once merely a nuisance to farmers hard to pull out, quick to sprout back after cutting, and capable of towering over tractors.
Now, it's becoming a full-blown nightmare worthy of an agricultural horror flick: scientists in California have found clusters of the weed that are resistant to scores of herbicides, leaving farmers to fight an increasingly formidable and costly foe.
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The weed, also known as mare's tail, has always been around, but it wasn't until last month that University of California researchers confirmed that some strains of it had become resistant to herbicides such as Roundup, posing a threat to the nation's most productive farmland.
Researchers were alarmed by the weed's rapid proliferation. Its spindly stalks can be seen poking out of Napa Valley vineyards in the North, along highways and pastures in the Central Valley and in Southern California fields.
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