Gale is disturbing fodder (6)
I believe the answer is:
silage
'fodder' is the definition.
(fodder used to feed animals)
'gale is disturbing' is the wordplay.
'disturbing' indicates an anagram.
'gale'+'is'='galeis'
'galeis' with letters rearranged gives 'SILAGE'.
(Other definitions for silage that I've seen before include "Form of fodder" , "Fermented feeding stuff for cattle" , "Stored, dried animal fodder" , "Preserved fodder for cattle" , "Green fodder stored and fermented" .)