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Assessing the Accuracy of Farmers' Nutrient Loss Risk Perceptions.

Elizabeth R Schwab1, Margaret M Kalcic2, Robyn S Wilson3

  • 1Department of Food, Agricultural and Biological Engineering, The Ohio State University, Columbus, OH, USA. schwab.175@osu.edu.

Environmental Management
|August 14, 2021
PubMed
Summary

Farmers' perceptions of nutrient loss risks are influenced more by individual beliefs and past actions than by their land's actual vulnerability. Understanding these factors can improve adoption of nutrient management practices.

Keywords:
FarmersNutrient lossPerception accuracyRisk perceptionSoil and Water Assessment Tool

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Area of Science:

  • Environmental Science
  • Agricultural Science
  • Risk Perception Studies

Background:

  • Nutrient loss from agriculture contributes to water quality issues like hypoxia and eutrophication.
  • Adoption of nutrient management practices is encouraged but poorly understood regarding farmer decision-making.

Purpose of the Study:

  • To identify factors influencing farmers' risk perceptions of nutrient loss.
  • To assess the "accuracy" of these perceptions against modeled land vulnerability.
  • To understand farmer and farm characteristics linked to risk over/underprediction.

Main Methods:

  • Utilized the Soil and Water Assessment Tool (SWAT) model with farm field management data to generate water quality outputs.
  • Paired modeled water quality data with farmers' self-reported risk perceptions.
  • Analyzed farmer and farm characteristics associated with "overprediction" and "underprediction" of risk.

Main Results:

  • Farmer characteristics, including conservation identity, prior adoption, efficacy beliefs, and perceived consequence seriousness, significantly influenced risk perception "accuracy" (over/underprediction).
  • Objective land vulnerability to nutrient loss was less influential than individual farmer characteristics.

Conclusions:

  • Farmer-centric factors are more critical drivers of risk perception accuracy than biophysical land vulnerability.
  • Targeting individual beliefs and experiences may enhance the adoption of beneficial nutrient management practices.