The Iowa Soybean Association On-Farm Network is made up of farmers who work together to study and improve nitrogen management and increase crop production profits. They compare current nitrogen management practices with alternatives in replicated strip trials across their fields, using precision technology such as GPS. They pool and share their data in local and statewide groups to learn what works – and what doesn’t – to minimize nitrogen losses. Most growers involved have learned ways to reduce nitrogen use by 50 lbs. per acre or more without reducing profits.