Weeds compete with wheat for light, nutrients, water and space.
Weeds can also harbor deleterious insects and diseases, decrease harvest efficiency, and contaminate the harvested grain. These factors result in dockage and lower yields, thus reducing profits. Cultural Control Methods Cultural weed management is probably the single most important factor in reducing weed pressure in wheat. Purchasing certified seed ensures quality, weed-free wheat seed. Proper seed-bed preparation, fertilization, insect and disease control will help ensure a healthy crop.