Fighting a mighty weed

Weeds are pesky in any situation. Now, imagine a weed so troublesome that it has mutated to resist multiple herbicides. Palmer amaranth, a member of the pigweed family, is spreading across states and growing in strength. ...

Autonomous weed control via smart robots

Driving across Iowa, Hendrik J. Viljoen, distinguished professor of chemical and biological engineering at the University of Nebraska, noticed that soybean fields were becoming increasingly infested with weeds each season. ...

Mechanism for herbicide resistance in Palmer amaranth identified

Corn and soybean farmers might as well be soldiers locked in an ever-escalating war against the weeds that threaten their crops. New weapons—herbicides—only work for so long before the enemy retaliates by developing resistance ...