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Articles on Weeds

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Soybean plants on an Arkansas farm. Those at left show signs of damage from dicamba; others at right were planted later in the season. Washington Post via Getty Images

The herbicide dicamba was supposed to solve farmers’ weed problems – instead, it’s making farming harder for many of them

Farmers are stuck in a chemical war against weeds, which have developed resistance to many widely used herbicides. Seed companies’ answer – using more varied herbicides – is causing new problems.
Containers of the herbicide glyphosate at a farm supply store in northeast Thailand in 2019. AP Photo/Sakchai Lalit

While debate rages over glyphosate-based herbicides, farmers are spraying them all over the world

Roundup may be taking a beating in the US, where three juries have concluded that it gave plaintiffs cancer, but it’s still widely used around the globe.
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Attack of the alien invaders: pest plants and animals leave a frightening $1.7 trillion bill

Invasive species have been invading foreign territories for centuries. By quantifying the mammoth economic impacts, we hope political leaders will start to take notice.
Canary grass is an invasive plant, but new varieties are still being developed for pasture. Stuart Hay

Feed or weed? New pastures are sowing problems for the future

Weeds cost Australian farmers around A$4 billion every year — and they are likely to do a similar amount of damage to the environment. In a new global survey published this week in Proceedings of the National…

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