Test geschiktheid potentiële nieuwe gewasbeschermingsmiddelen voor Standaard Water

The allowance for use of imidacloprid, iprodione and pymetrozine in Dutch greenhouse horticulture is not prolonged, therefore these active ingredients are no longer suitable for use Standardised Water. Seven potential active ingredients (fludioxonil, cyprodinil, penconazool, metalaxyl-M, flonicamid, flupyradifuron en acetamiprid) are selected to replace these three active ingredients and are tested for stability under influence of addition of sodium sulphite and analyzability in the Standardised Water matrix. All seven new active ingredients showed well analyzable and stable. Two active ingredients from current Standardised Water (spinosad and fenvalerate) showed not well analysable/not stable. It is advised to also replace these by two new active ingredients.