Resistance Management: Herbicides

WHAT ARE HERBICIDES?

Herbicides are essential tools used by farmers to protect crop yields and quality by controlling weeds that compete with plants for nutrients, sunlight, space and water.

Herbicides allow farmers to control weeds and preserve their crop’s yield and quality. If farmers rely too heavily on one type of herbicide, however, weeds can naturally adapt and become resistant. In fact, roughly 250 weed species have evolved to resist 160 different herbicides over the past 60 years.

HOW DOES HERBICIDE RESISTANCE EVOLVE?

Resistance is a natural, biological response that is heightened by overusing the same weed control methods instead of integrating chemical, agronomic and non-chemical tools.

VIEW THE FACT SHEET

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