Andersson, L. (2004) Finding 1

When using predictive models to aid farmers in making a nutrient application decision:

  • confirm that predictive models have been tested with satisfactory results against field experiments.
  • confirm that the models show detectable reductions of nutrient leaching, as a consequence of implemented remedies.
  • provide results that consider the total environmental impact of a suggested measure, in order to show a more realistic evaluation of sources of nutrient load (e.g. provide results demonstrating the combined impact of all potential nutrients, rather than results predicting application impacts of one nutrient at a time).
  • provide simulations that are based on a specific climatic variable, such as air temperature, rather than general seasonal timing (early fall).
  • develop a system for presenting model uncertainties appropriate to use in stakeholder dialogues.

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Andersson, L. (2004) Finding 2

Present nutrient application simulations to farmers in a group, to give farmers an opportunity to learn what practices others are using and how they weigh aspects when making decisions about nutrient management.

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