Can weeds be controlled organically?
Modern chemical herbicides provide effective weed control. However, they are forbidden in organic food production and organic farmers have to use a variety of alternative methods to control weeds. Are any organic weed control methods effec...
How herbicides control weeds: mode of action explained
The fundamental effect herbicides have on plant biochemistry is called the mode of action. After spraying, weeds are controlled by a cascade of biochemical events that generate various symptoms of abnormal growth and development.
Palmer amaranth plagues US row crops
Palmer amaranth (Amaranthus palmeri) is an aggressive broadleaved weed that has become a severe problem in crops such as cotton, maize and soybeans across the US. Twenty-five years ago, it was a minor weed of little concern, but today some...