Crossword Genius

Surrender the result of cows producing more? (5,2)

Ross

I believe the answer is:

yield up

I'm a little stuck... Click here to teach me more about this clue!

'surrender' is the definition.
(yielding up is a kind of surrendering)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

I've seen this clue in The Telegraph.
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