PLAYING THE TRUMP OF DUALITY IN DISCUSS: UPGRADING POCER WITH QUESTIONNAIRE RESULTS.

DISCUSS, the Dual Indicator Set for Sustainable Crop protection Sustainability Surveys, was designed to help farmers achieve more sustainable crop protection. The indicator set pairs risk indicators--POCER--, with response indicators--a management questionnaire. Both parts of DISCUSS are indicators in their own right, but the dual risk-response setup has the additional trump that the questionnaire reveals farm level information, by which POCER calculations are refined. Simulations with personal protection and drift mitigation measures illustrate how DISCUSS can be used to support the farmers' crop protection decisions.