1. Dep. of Biological and Chemical Engineering Aarhus Univ. Aarhus 8200 Denmark
2. Hafner Consulting LLC Reston VA 20191 USA
3. Dep. of Agroecology Aarhus Univ. Tjele 8830 Denmark
4. Ottawa Research and Development Ctr. Agriculture and Agri‐Food Canada Ottawa ON K1A 0C6 Canada
5. School of Environmental Science Univ. of Guelph Guelph ON N1G 2W1 Canada
6. Quebec Research and Development Ctr. Agriculture and Agri‐Food Canada Quebec QC G1V 2J3 Canada