’Once more hoed around the last top crop’ was heard everywhere (8)

'heard everywhere' is the definition.
The definition and answer can be both to do with perception as well as being past participle verbs.
Perhaps you can see a link between them that I can't see?

'once more hoed around the last top crop' is the wordplay.
'once more' becomes 're' (prefix in words like 're-emerge' or 're-enter').
'around' indicates putting letters inside.
'last' suggests the final letters.
'top' says to take the initial letters (in a down clue, the first letter is top).
The final letter of 'the' is 'e'.
The first letter of 'crop' is 'c'.
're'+'hoed'='rehoed'
'e'+'c'='ec'
'rehoed' enclosing 'ec' is 'REECHOED'.

'was' acts as a link.

Can you help me to learn more?