Forecasts for Aphis fabae

The timing of the migration of Aphis fabae at any location can be predicted using the mean air temperature and the site’s latitude and longitude. A range of equations were produced in AHDB Project FV 407a describing the relationships between the dates of first, 10% and 50% capture of aphids in suction traps and the mean air temperature over different periods and site latitude and longitude.

Forecast based on air temperatures (January-April)