Wageningen UR Greenhouse Horticulture, DLV Plant and Schoneveld Breeding collaborated to develop
sustainable management strategies for Botrytis in potplants with cyclamen as a pilot crop.
The greenhouse test at a commercial site showed that combinations of different measures were more effective to reduce the Botrytis infections in cyclamen than a single treatment. The combination of a biological product, potting soil of Bol potgrond and an open potrim of Modiform resulted in the least Botrytis. The chemical product of BASF (now admitted as Signum) seemed to be a good alternative for the current chemical reference.
Measurements of spores in the greenhouse air proved to be a useful tool to indicate locations with diseased plants in the greenhouse. As many secondary metabolites are associated with plant resistance, we compared treated and control plants for differences in their secondary metabolite profiles, using an LCMS-based global profiling technique detecting more than 300 hundred different metabolites.
Unfortunately, with the current experimental setup no clear differences in metabolite profiles between treatments could be established, mostly due to the relatively large biological variation in this metabolomics screening part. The test with three watering strategies (dry, normal, wet) showed that a combination of a biological product with the soil amendment of Jaritop and an open potrim resulted in the least Botrytis in the consumer phase.
This project is financed by the Dutch Horticultural Production Board, Koppert, BASF, Syngenta, PlantoSys, Horticoop, Bol Potgrond, Modiform and Jiffy.