Future use of Systhane 20EW, used to treat powdery mildew, rust and black spot on protected HONS crops is under threat.
The European Union withdrew its approval of the Dow AgroSciences product late last week.
Consultant John Adlam said: “Off-label approvals for the use of Systhane 20EW on protected crops that the ornamentals sector used has been revoked due to improved safety limits on pesticide residues in raspberries and blackberries.
“This was done without notice and relates to EU directives.
“The current label approval for Systhane 20EW covers ornamentals and strawberries. Both those crops have protected growing systems, but we are not sure if either of these approvals actually say the magic word ‘protected’.”
Managing director Mark Tully of Systhane’s marketer, Essex-based Landseer, said: “It’s a blow as it is a useful tool for growers.”
A Dow AgroScience representative said: “It is still unclear if nursery stock growers can use Systhane 20EW. The Pesticides Safety Directorate is working on finding out.”
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