https://www.fwi.co.uk/arable/osr/osr-growers-on-alert-as-pollen-beetle-migration-starts
OSR growers on alert as pollen beetle migration starts - Farmers Weekly
Mar 9, 2017 - The pollen beetle migration has started across much of England and oilseed rape growers are being urged to start looking out for the pest in coming weeks.
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https://www.fwi.co.uk/arable/crop-management/pests/growers-urged-to-avoid-unnecessary-pollen-beetle-spraying
Growers urged to avoid unnecessary pollen beetle spraying - Farmers Weekly
Mar 17, 2017 - Oilseed rape growers are being advised to hold their nerve and not rush in with a spray to control pollen beetle, as the pest begins to show up in crops
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