Many growers, especially those in commercial agriculture, use pesticides and fertilizers to promote fast growth and protect against pests that attack their crops. However, the runoff of pesticides and fertilizers into surface and groundwater can pose significant human health risks to downstream water users, as well as environmental impacts (e.g., eutrophication and hypoxic zones caused by nitrate runoff). To minimize the risks associated with pesticide and fertilizer use, growers can use utilize approaches that optimize the amount, source, method of application, and timing of fertilizers, manure, soil amendments, and pesticides. One such approach is Integrated Pest Management, an ecosystem approach to pest management that uses information on the lifecycles of pests and their interaction with the environment to minimize pest damage to crops, and other Best Management Practices. Because agricultural runoff is a nonpoint source of pollution, collective action can be a powerful approach for growers and others to share information, strategies, and technologies that drive improved pesticide and fertilizer management.