Alternating crops needs overtime in allotment (8)
I believe the answer is:
rotation
'alternating crops needs overtime in allotment' is the definition.
I can't tell whether this definition defines the answer.
'overtime in allotment' is the wordplay.
'overtime' becomes 'OT' (O and T are abbreviations for over and time).
'in' is an insertion indicator.
'allotment' becomes 'ration' (I've seen this in other clues).
'ot' going inside 'ration' is 'ROTATION'.
Can you help me to learn more?
(Other definitions for rotation that I've seen before include "Going round" , "Turn of a wheel" , "altering of crops" , "The action of moving around an orbit" , "Turning motion" .)