Crossword Genius

Happen to harvest more (4,2)

Ross

I believe the answer is:

crop up

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'happen' is the definition.
(I've seen this before)

'harvest more' is the wordplay.
'harvest' becomes 'crop' (synonyms).
'more' becomes 'up' (I can't explain this - if you can you should believe this answer much more).
'crop'+'up'='CROP UP'

'to' acts as a link.

Can you help me to learn more?

(Other definitions for crop up that I've seen before include "Appear unexpectedly" , "Occur by chance - like harvest?" , "Happen" , "Occur unexpectedly - like harvest?" , "Occur, arise" .)

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