Put in a new petition that worked after harvest (9)
I believe the answer is:
reapplied
'put in a new petition' is the definition.
Although both the answer and 'petition' are verbs, they are not in the same form of the verb.
'worked after harvest' is the wordplay.
'worked' becomes 'plied' (to ply is to work with a tool).
'after' means one lot of letters go next to another.
'harvest' becomes 'reap' (synonyms).
'plied' put after 'reap' is 'REAPPLIED'.
'that' is the link.
Can you help me to learn more?
(Another definition for reapplied that I've seen is " Became candidate again".)