Hamlet sent first two back for place of cultivation (7)

I believe the answer is:

tillage

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'cultivation' is the definition.
(I know that cultivation can be written as tillage)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for tillage that I've seen before include "Cultivation of the land" , "Preparing for cultivation" , "Preparation for growing" , "Cultivation of fields" , "Cultivation of the soil" .)

I've seen this clue in The Irish Times.

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