Speaking at the East Anglian Potato Event, he said new developments in diagnostic testing to assess the level of infective pathogen in the soil - commercially available for the first time this year - now give growers the opportunity to quantify potential black dot risk before planting.
Where the tests identify fields with a medium to high risk of infection, growers could opt to grow a shorter-season crop or use new agronomic techniques to reduce stem numbers.
They could also grow a higher proportion of larger tubers in a shorter period, for example.
Assessing the risk of black dot, which increases with each successive potato crop and shorter rotations, will also help to justify Amistar applications on susceptible crops, Peters reported.
He said: "Soil treatment at planting knocks back the population of the black dot pathogen and slows its development in the growing crop; it effectively buys the grower extra time at the end of the season before infection builds up.
"However, the final result will always be highly dependent on the soil conditions throughout the season."