Thrilling to pick most of cereal crop (8)
I believe the answer is:
electric
'thrilling' is the definition.
(I've seen this in another clue)
'pick most of cereal crop' is the wordplay.
'pick' becomes 'elect' (to elect is to pick or select).
'most of cereal crop' becomes 'ric' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'elect'+'ric'='ELECTRIC'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for electric that I've seen before include "type of chair nobody wants to end up in?" , "Emotionally charged" , "Current for heating, lighting etc" , "Type of light, fire, shock, etc" , "as fans may be?" .)