Crossword Genius

Crop production science produced angry moo (8)

Ross

I believe the answer is:

agronomy

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'crop production science' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.

'produced angry moo' is the wordplay.
'produced' indicates anagramming the letters.
'angry'+'moo'='angrymoo'
'angrymoo' anagrammed gives 'AGRONOMY'.

Can you help me to learn more?

(Other definitions for agronomy that I've seen before include "Rural economy" , "Science of soil management and crop production" , "Study of crops and soil management" , "Science of soil and crops" .)

I've seen this clue in the Sydney Morning Herald.
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