A weed is just a plant in the wrong place. It competes with crops for water, nutrients, and light. Some weeds also host pests or diseases, and a few are toxic to livestock. Left unchecked, they can cut yields dramatically.

Weeds succeed because they are adaptable. They germinate fast, grow quickly, and produce thousands of seeds. Many have deep roots or spreading rhizomes that survive cultivation. Farmers fight them with cultivation, mulching, crop rotation, and herbicides.

Common weed management strategies

• Mechanical cultivation between rows
• Mulching to block light
• Crop rotation to disrupt life cycles
• Herbicides selective for the crop
• Cover crops that outcompete weeds

Herbicide resistance is a growing problem. Weeds that survive repeated applications pass resistance to their offspring, forcing farmers to rotate chemicals and mix tactics. Integrated weed management combines several approaches because no single method works forever.