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The world's largest field trial on the control of Japanese knotweed, conducted in Wales, has found that eradicating the plant is not possible.

Most gardeners pull out weeds without giving them a second thought, but it turns out that you could be eating some of them.
Spring is here especially in the valleys. I manage 4.5 acres at our Mesa County Extension office and the weeds are off to the races for growing. So how do we manage weeds?

Source credit: www.aphis.usda.gov

The Need for a Systems Approach

In 2016, China put in place a new grain import law to keep invasive weeds and other plant pests from entering their country.

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Commissioners of agriculture in Nigeria’s cassava growing belt have decried the weeds menace which they blamed for low yields in cassava and the main constraint limiting the competitiveness of cassava farmers in the country.
Is it possible to predict which nonnative plant species will become invasive weeds and when? According to research featured in the journal Invasive Plant Science and Management, the answer is "hopefully yes."
Tens of thousands of soybean and cotton farmers across the country are taking free but mandatory training in how to properly use a weed killer blamed for drifting and damaging crops in neighboring fields. The U.S. Environmental Protection Agency required
The fight over Arkansas’ effort to ban an herbicide that farmers say has drifted onto crops where it wasn’t applied, causing widespread damage, is far from over, with attention now shifting to a manufacturer’s lawsuit.
The growing popularity of robotic weeders for specialty crops has grown partly out of necessity, says Steven Fennimore, an extension specialist at the University of California, Davis. Specialty crops are vegetables like lettuce, broccoli, tomatoes, and onions.

Source credit: Westernfarmpress.com

Farmers and the agriculture industry can’t stand another year like 2017 in terms of off-target movement of herbicides,

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Glyphosate, the ubiquitous herbicide, may not really be poison, but it could well be the most politicized substance in Europe. In recent days, a glyphosate controversy has revealed much about the continent's decision-making processes.
The European Union has approved a five-year extension of the use of the weed killer glyphosate in a move that failed to satisfy both environmentalists and farmers. After a drawn-out process, the EU backed the extension