pull a few plants and see what turnip bottoms look like. I had beets and carrots wilt last year and turned out voles had tunneled underneath and eaten the bottoms.

I have lost about half my turnips. They are dying from the root. The dead one I have seen have their root completely rotted out,and smelled very bad.

The plants look a bit leggy, do they get enough direct sun light? About 1/3 of my garden space isn't plantable in the fall do to the shading of nearby trees which only allows 5-6 hours of direct sun, 8 is much better. Next best guess is over watering or too much rain lately which can lead to plant disease.

You'll have to describe the problem better. If a root problem, are there live maggots in the roots? Growths on the root? Leaf spot is common, and produces white spots on the leaves that eventually destroy the roots. Might want to work hard at identification because some such diseases remain in the soil for many years.

You don't go from "awesome" to "dying" with lack of light.

Are they in some kind of a planter? And how have you been caring for them? How much water and whatnot? Without more information it is hard to tell what the problem is. Could be general root rot from overwatering or could be a cabbage root maggot problem.

Rodney

Thanks everyone. They are in a raised bed. I've grown other things in that bed, like spinach and lettuce without issue, and it drains well. I'll have to research cabbage root maggot.

Other info: they get full sunlight, they look leggy because they are wilting. They were very healthy and strong a few week before they started dying. The roots seem to have completely rotted. When I tried to pull up the plant the root was complete mush. I didnt see any maggots.