In summer 2014, Lake Erie and Grand Lake St. Marys, among others, again suffered harmful algal blooms. An ongoing problem in recent years, the blooms are mainly caused by excess phosphorus runoff, including fertilizer and manure from farms. And Ohio State University Extension — teaming with state agencies and Ohio farmers — is delivering crucial science-based educational programs to put new solutions to work. As a latest example, OSU Extension specialists, tapping into ongoing research by their college, are developing and will provide the fertilizer certification training required by Ohio’s new nutrient management law, Senate Bill 150. Other efforts include teaching nutrient management sessions at Ohio’s yearly Conservation Tillage Conference and updating nutrient recommendations — also based on college research — for growers of the state’s major crops. In these and other programs, “Extension takes the scientific view,” said Greg LaBarge, OSU Extension agronomy field speci
