A worrying job for the farmer? (9)
I believe the answer is:
harrowing
'a worrying' is the definition.
(thesaurus)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for harrowing that I've seen before include "Breaking new ground" , "stressful" , "Acutely distressing" , "work for a farmer" , "traumatic" .)