BUR #9726 has been approved by @Hillside_Moose.
create implication daikon -> radish
A daikon is a kind of radish, as mentioned in its wiki. Also, if you search radish -daikon, you'll find multiple pics of daikon that have only received the radish tag (e.g. post #5158877, post #4910095, post #4116177), indicating that taggers think daikon count as radishes already.
(If we decide we want a specific tag for red radishes, that might need to be its own topic of discussion.)