Why is it important to have clean, weed-free rows until canopy?
As soon as weeds emerge, they begin to compete with the crop for light and vital soil resources. It takes about 8-10 weeks to reach corn canopy, which marks the unofficial finish line for the critical time for weed control. Once canopy is reached, corn will out-compete any late-emerging weeds - shading them so they cannot use resources needed to achieve your seed genetics' maximum yield potential.
Research shows even small weeds can cause irreversible changes to corn’s growth and development. That’s why clean rows from start to finish deliver the maximum potential ROI, more than just clean rows at the finish.
