Tosefta על דמאי 2:1

Rice in its place (i.e., wherever it grows) is permitted [without tithing] in the harbor/suburb area (see Jastrow re חולת אנטכיא, following the GR"A) of Antioch. Rabbi Eliezer son of Rabbi Yosei says, "Rice in the harbor/suburb area of Antioch is permitted until Borek (=בורק, following the GR"A). (Cf. Dem. 2:1.)