Removes or supplies kernels (5)
I believe the answer is:
seeds
'removes' is the definition.
(seeding is a kind of removing)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for seeds that I've seen before include "More than one good player" , "Favoured entrants in a knock-out competition" , "favourites for the trophy?" , "Initiates the growth of" , "top tennis players" .)