Increase production of boots (5)
I believe the answer is:
boost
'increase' is the definition.
(boost is a kind of increase)
'production of boots' is the wordplay.
'production of' indicates an anagram.
'boots' is an anagram of 'BOOST'.
(Other definitions for boost that I've seen before include "advance" , "promotion" , "Help to increase" , "lift" , "Raise" .)