Conditional Causal Mediation Analysis of Factors Associated With Cover Crop Adoption in Iowa, USA

dc.contributor.author Lee, Danhyang
dc.contributor.author Arbuckle, J. Gordon
dc.contributor.author Zhu, Zhengyuan
dc.contributor.author Nowatzke, Laurie
dc.contributor.department Sociology
dc.contributor.department Statistics
dc.contributor.department Iowa Nutrient Research Center
dc.date 2019-06-07T07:27:09.000
dc.date.accessioned 2020-07-02T06:56:51Z
dc.date.available 2020-07-02T06:56:51Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 2018
dc.date.embargo 2019-05-01
dc.date.issued 2018-11-01
dc.description.abstract <p>The Iowa Nutrient Reduction Strategy is a statewide effort that aims to encourage voluntary adoption of conservation practices by farmers to reduce the loss of nitrogen and phosphorus that contribute to water quality impairments in the Upper Midwest and drive hypoxic conditions in the Gulf of Mexico. This work is an analysis of the first 2 years (2015–2016) of a 5‐year survey of Iowa farmers. We employ causal mediation analysis to examine the direct and indirect effects of key explanatory variables (e.g., information sources, nutrient management influences, involvement in watershed management activities, and conservation technical assistance) and two causally ordered mediators (farmers' awareness of and attitudes toward the Nutrient Reduction Strategy) on cover crop use. Results showed that participation in watershed activities and receipt of cost share or technical assistance had positive direct effects on cover crop use, while low levels of perceived nutrient loss mitigation self‐efficacy had a negative direct effect. Information and influence of public sector soil and water conservation entities had positive indirect effects on cover crop use through awareness and attitudes, while influence of private sector agribusiness entities had negative indirect effects through those mediators. These results suggest that current strategies such as engaging farmers in watershed management activities and public sector cost share and technical assistance are increasing adoption of cover crops, but the data also point to a need to increase engagement with private sector actors to help them improve their effectiveness as conservation technical assistance providers.</p>
dc.description.comments <p>This article is published as Lee, Danhyang, J. Gordon Arbuckle, Zhengyuan Zhu, and Laurie Nowatzke. "Conditional Causal Mediation Analysis of Factors Associated With Cover Crop Adoption in Iowa, USA." <em>Water Resources Research</em> 54, no. 11 (2018): 9566-9584. doi: <a href="https://doi.org/10.1029/2017WR022385">10.1029/2017WR022385</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/stat_las_pubs/153/
dc.identifier.articleid 1154
dc.identifier.contextkey 14296363
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath stat_las_pubs/153
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/90458
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/stat_las_pubs/153/2018_Zhu_ConditionalCausal.pdf|||Fri Jan 14 20:39:03 UTC 2022
dc.source.uri 10.1029/2017WR022385
dc.subject.disciplines Agriculture
dc.subject.disciplines Applied Statistics
dc.subject.disciplines Environmental Studies
dc.subject.disciplines Soil Science
dc.title Conditional Causal Mediation Analysis of Factors Associated With Cover Crop Adoption in Iowa, USA
dc.type article
dc.type.genre article
dspace.entity.type Publication
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