Clue gives two 4 letter answers each with a defn and wordplay...
2a Judge one area over being ready for Chinese seaweed and Australian fish...i can see the 2nd bit (from seaweed onwards)will give AGAR.
6d Course taken, Scots lease market for IT in due course with moderation . The 1st 4 words give the 1st answer ...TACK ..... letters for the other bit are SOH? soho?