Doctor Grey right! Donkey after European forage crop (3-5)
I believe the answer is:
rye-grass
'european forage crop' is the definition.
The definition suggests a singular noun which matches the answer.
'doctor grey right donkey' is the wordplay.
'doctor' is an anagram indicator.
'right' becomes 'r' (common abbreviation).
'donkey' becomes 'ass' (ass is a term for a donkey).
'grey' anagrammed gives 'ryeg'.
'ryeg'+'r'+'ass'='RYE-GRASS'
'after' acts as a link.
Can you help me to learn more?
(Other definitions for rye-grass that I've seen before include "Pasture and fodder plant" , "Fodder crop" , "It's grown as fodder and in lawns" .)