Did you soil test, lime and fertilize? What kind of soil prep did you do? August is a horrible time to plant anything. The turnips should have gone in the ground in late June. The chicory and rape, September. I'd burn off those leaves and frost seed a clover/chicory mix in this spring.
Yes, yes, and yes. I put on 2 Ton of Lime and the recommended amount of 15-15-15 fertilizer. Mostly cleared the land by hand, then later got a dozer in there to finish it off. I tilled the entire thing with a walk behind tiller (took a week). I planted it roughly 7-10 days after completion. I was aiming for a day of rain, but the rain never materialized as forcasted. We did get some rain about 10 days after planting, but I'm not sure if it was enough.
Here are some staging pictures:
Before I started:
