> I wonder how effective it would be, before the OSR (canola) comes into flower, to place yellow boards or fabric coated with glue/insecticide around the fields to reduce the breeding stock of the beetles.
Flea beetles jump when disturbed and I saw that it is possible to control them on rocket by waving a sticky board over the plants. The beetles jump and stick to the board.
Perhaps putting a line of sticky boards on the booms of a crop sprayer might be just as effective as using it to spray insecticide.
Best wishes
Peter
52°14'44.44"N, 1°50'35"W
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