Necessity is the mother of innovation
At last, after more than thirty years, herbicide active ingredients with new modes of action are in the pipeline. The growing problem of resistant weeds has driven more research effort, which is now showing signs of success.
New modes of action, why so long coming?
Some new herbicide modes of action have been announced recently. So, new modes of action are there to be discovered, although it will be some years before the active ingredients concerned reach the market. Many hurdles remain,
Resistant blackgrass could soon cost UK £1 billion
More than 800,000 tonnes of wheat are being lost from UK harvests due to lower yields from crops infested with herbicide resistant blackgrass. This is estimated to cost farmers on average £400 million in higher costs and lower returns.
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...