Japanese radish pest

[ken]

Daughter in the West country is growing Japanese radish. She tells me she was surprised to find maggots feeding around the crowns. The maggots have been given to her chickens and the radish are putting up new leaves. But does anyone know what this pest is, or how best to avoid it/deal with it?

[Johnboy]

Hi Ken,
I suspect the intruders may be Cabbage Rootfly.
JB.

[ken]

many thanks, Johnboy. That was my suspicion, too, but I've never had to deal with that particular pest myself.