Flea beetle makes sclerotinia control more of a challenge

摘要

The sad tale of oilseed rape continues, as the ravages of cabbage stem flea beetle - aided by rape winter stem weevil - are plain to see.There appears to be some correlation in damage severity with the application of graminicides. If they have been applied late, there is a growth check and some stem abnormalities. This check appears to have enabled larvae to damage the main raceme more.With the main raceme dead, side branches are now being thrown out.