Arable growers are being warned not to ditch multi-site fungicides as the chlorothalonil deadline looms.

Will Nicholls, the regional agronomy manager for ADAMA, has warned any fungicide treatments made after the May 20 cut off date which would have included chlorothalonil should include folpet instead to maintain effective protection against cereal diseases.

He said: “Growers must think carefully about how they structure their fungicide treatments in the second half of the spring to ensure their crops remain properly protected.”

Chlorothalonil has been the ‘go-to’ multi-site fungicide for many years but can no longer be used beyond May 20 after the EU voted to revoke its licence.