Cut short the harvest (4)
I believe the answer is:
crop
This clue is a double definition.
'cut short' is the first definition.
(synonyms)
'the harvest' is the second definition.
('crop' can be a synonym of 'harvest')
(Other definitions for crop that I've seen before include "Produce - short hairstyle" , "Produce - riding whip" , "Produce; whip stock" , "Harvest yield" , "Set" .)