1. DSS in potato cultivation Phytophthora control with advice module fungal diseases from Dacom Precision Farming Koen Laemers 2 november 2012

2. Input Dacom advicesystem 1.Weathers information close to weather station 2.Crop parameters (growth and condition) 3.Weather prediction 4.Knowledge (e.g. life cycle of the fungal like organism)

3. Principle of advice

4. Advice text Phase A+ Consult advice again Tomorrow Phase A Apply Contact fungicide Phase B Apply Locally systemic fungicide Phase C Apply Systemic fungicide Phase D Infection too old

5. Crop parameters Visual observation by grower: 1.Crop growth 2.Crop condition Or automatic observations using sensors

6. From research 2011 Reduction achievable in periods with low infection pressure by longer interval between applications; like conventional grower does! Spraying advice is not linked to weather conditions; also no advice on dose No leaf affected = little risk for tuber infection; no advice about tuber protecting fungicide Does grower follow advice? Often spraying capacity is limited. Risk: potatoes for storage or direct delivery? Project placement Agrifirm Plant, R&D

7. The Future? Spot specific Phytophthora control based on crop vegetation? Or...