At the farm produced second crop (9)
I believe the answer is:
aftermath
'second crop' is the definition.
(I've seen this before)
'at the farm produced' is the wordplay.
'produced' is an anagram indicator.
'at'+'the'+'farm'='atthefarm'
'atthefarm' anagrammed gives 'AFTERMATH'.
(Other definitions for aftermath that I've seen before include "Results, often of something bad" , "End" , "Subsequent circumstances" , "Consequences of a bad event" , "Subsequent consequences" .)