A minor charge for allotment (5)
I believe the answer is:
award
'for allotment' is the definition.
(award is a kind of allotment)
'a minor charge' is the wordplay.
'minor charge' becomes 'ward' (both can mean a child in one's care. I am not sure about the 'minor' bit.).
'a'+'ward'='AWARD'
Can you help me to learn more?
(Other definitions for award that I've seen before include "Tony is one" , "Official prize in a draw" , "Honour, accolade." , "Give officially as prize or payment" , "Trophy or medal, for example" .)