Sounds like scientific study of farming techniques that might involve growing poppies? (12)

I believe the answer is:

pharmacology

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'study of farming techniques that might involve growing poppies?' is the definition.
'pharmacology' can be an answer for 'study' (pharmacology is a kind of study). I'm unsure of the rest of the definition.

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for pharmacology that I've seen before include "Science of drugs" , "Study of drugs" , "Branch of medicine concerned with drugs" .)

I've seen this clue in the Irish Times (Crosaire) and the Irish Times.

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