Volunteers to shop around, maybe, for fertiliser (6)
I believe the answer is:
potash
'for fertiliser' is the definition.
(I've seen this before)
'volunteers to shop around' is the wordplay.
I cannot quite see how this works, but
'volunteers' could be 'ta' (abbreviation for Territorial Army) and 'ta' is present in the answer.
an anagram of 'shop' is 'posh' which is within the left over letters.
This accounts for all the letters.
This explanation may well be incorrect...
'maybe' is the link.
Can you help me to learn more?
(Other definitions for potash that I've seen before include "field dressing" , "Potassium carbonate or hydroxide" , "Pathos (anag)" , "The strange pathos of a potassium compound" , "Alkaline compound" .)