____________________________________________ Margaret Carrelii To my grandmothers, Jadwiga Krajewska and Betty W. Thrift.iii ACKNOWLEDGEMENTS I would like to acknowledge the support and advice given to me by each of my committee members over the past several years. Thank you, Dr. Kajsa Dalrymple; Dr. Shelly Campo; Dr. Rachel Young; Dr. Melissa Tully; and Dr. Margaret Carrel-I could not have written this dissertation without you. Each of these women also served as role models for me personally and continue to motivate me for my future career in academia.In particular, Kajsa E. Dalrymple was integral to my entire doctoral program experience, with her role as mentor beginning years prior to my official enrollment in the doctoral program.Correspondingly, it was the invaluable advice of my Master's degree program academic advisor, Dr. Shelly Campo, who prompted me to connect with Dr. Dalrymple originally. The guidance of these two graduate advisors has positively impacted my academic career and personal life in more ways than I can express. I also could not have made it through the past six years of graduate school, or any other time in my life leading to those years, without the help of my parents, Diana Thrift and Witold Krajewski. Their support and constructive criticism enabled me to get to this current place in my life, and complete both my Master's and Doctorate degrees. My sister, Sophia Krajewski, also deserves recognition for the motivation she provided me to finish this degree by her own completion of veterinary school several years ago. The final product of this dissertation and my success throughout most of the doctoral program was in large part due to my extremely supportive significant other, Matthew Tarnoff. Matt provided the love, understanding, excitement, motivation, and helpful critiques I needed to make it through the challenges of writing a dissertation and completing my Ph.D.iv Finally, I want to thank the over 100 agricultural producers, and several other key informants, who I was lucky enough to spend a significant amount of time talking to over the lastyear. These people all graciously gave me not only their time, but also expended significant cognitive energy in answering each and every one of my questions. These people are the real reason that this dissertation project was accomplished. v ABSTRACT In Iowa, the state with the largest percent of its land used for agriculture (90 percent) in the nation, compromised water quality is a chief concern among experts. The primary problem is related to the negative environmental impacts caused by nutrient runoff from fields. Although several innovative land-management practices have demonstrated nutrient reduction potential and other soil health related benefits, the practices are not widely utilized on Iowa farm fields.Thus, water quality is at the center of a contentious debate in the state and many farmers are receiving contradictory advice depending on the source of the information.Media and interpersonal communication channels play a primary role...