Farmers maybe produce strong punch with last of apples (9)
I believe the answer is:
haymakers
'farmers maybe' is the definition.
(haymakers work on a farm)
'strong punch with last of apples' is the wordplay.
'strong punch' becomes 'haymaker' (I've seen this before).
'with' is a charade indicator (letters next to each other).
'last of' indicates one should take the final letters.
The last letter of 'apples' is 's'.
'haymaker'+'s'='HAYMAKERS'
'produce' is the link.
(Other definitions for haymakers that I've seen before include "those taking advantage of sunshine?" , "some in agriculture" , "Hard blows" .)