Manage certain farm output in Cheshire town (7)
I believe the answer is:
runcorn
'in cheshire town' is the definition.
(I've seen this before)
'manage certain farm output' is the wordplay.
'manage' becomes 'run' (both can mean to organise).
'certain farm output' becomes 'corn' (I can't explain this - if you can you should believe this answer much more).
'run'+'corn'='RUNCORN'
Can you help me to learn more?
(Other definitions for runcorn that I've seen before include "Mersey town" , "Cheshire industrial port" , "Industrial town in Cheshire" .)