A field that's churned up didn't succeed (6)
I believe the answer is:
failed
'didn't succeed' is the definition.
(I've seen this before)
'a field that's churned up' is the wordplay.
'that's churned up' indicates an anagram (letters churned or mixed up).
'a'+'field'='afield'
'afield' with letters rearranged gives 'FAILED'.
(Other definitions for failed that I've seen before include "Bankrupt" , "Was unsuccessful, did not pass exam" , "Didn't succeed" , "Didn't make it - not well" , "Did not succeed, perhaps at exam" .)