Based on responses from a regional survey, Master Gardeners are more likely to report changes in yard landscaping and fertilizer and chemical use practices than are non-participants. Water quality monitoring volunteers are more likely to report changes in uses of fertilizers and other chemicals and in yard irrigation. Water resource protection group participants are more likely to report changes in all types of yard management practices examined. Respondents' demographics, place of residence, environmental attitudes, and news sources are also correlated with reported changes in behavior. We employ these factors to control for systematic factors related to participation on these programs.

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