Weed management is one of the most significant challenges in organic production systems, especially in high-value leafy greens like lettuce. With limited tools available, growers should combine strategies to suppress weeds effectively. One approach is precision irrigation management. By delivering water directly to the crop root zone through systems like subsurface drip irrigation, growers can reduce soil surface wetting, making conditions less favorable for weed germination. Yuma’s organic growers are doing a pioneering job in adopting these strategies, and when paired with sensor-based irrigation scheduling, the practice not only conserves water but also helps disrupt the weed life cycle.
Read my recently published Extension article for the full details:
Can Precision Irrigation Be an Effective Approach to Suppress Weed Pressure in Organic Lettuce?