Drainage Water Management

In this webinar, Dr. Ehsan Ghane, Extension Specialist and Associate Professor at Michigan State University, explores innovative strategies to address phosphorus pollution in the Western Lake Erie Basin. Focusing on integrated conservation practices, Dr. Ghane highlights how combining soil health, nutrient management, and advanced water management can enhance water quality and support sustainable agriculture.
Dr. Ghane explains that legacy phosphorus-nutrients accumulated in soil from past fertilizer applications-accounts for over 80% of phosphorus loads in the region. He emphasizes that nutrient management alone is too slow to meet water quality goals, requiring decades to significantly reduce soil phosphorus levels. Additionally, he discusses the impact of “event flows,” like rainstorms and snowmelt, which contribute to up to 90% of phosphorus loads, underscoring the need for targeted solutions during these critical periods.
Turning to water management, Dr. Ghane evaluates techniques like controlled drainage and drainage water recycling. While controlled drainage has shown mixed results for phosphorus reduction, drainage water recycling shows promise. This practice captures excess water during storms and reuses it during dry periods, effectively reducing phosphorus loads while increasing crop yields. It also helps stabilize yearly yields and reduces dependence on groundwater.
Dr. Ghane also discusses two-stage ditches, a smart design that slows water flow, reduces erosion, and lowers maintenance costs, all while improving drainage efficiency. His message is clear: solving phosphorus pollution requires a "stacked" approach-integrating soil health, nutrient management, and cutting-edge water management practices.
Watch this informative webinar to learn how these solutions can drive meaningful progress in improving water quality and agricultural sustainability in the Western Lake Erie Basin.