Use a .700/710 coupling with drip irrigation tubing or red stripe (1/2") soaker hose, of either size, to connect the two together.
Also good for repairs that goof plugs can't handle. Cut out the damaged section of poly tubing or soaker hose, and couple it back together.
Compression fittings require no glue. Red end compression fittings fit both 700 and 710 drip tubing and soaker hose. For those of you with arthritis, this is so easy if your using 700 tubing, and 700 soaker hose! The red compression fittings are unique being compression they also have male hose threads to make them very versatile.