What is the significance of a B'rachah in the town?
Bava Metzi'a. 107a #1: It means that one's house is close to a Shul. 1
Bava Metzi'a. 107a #2: It means that one has a Beis-ha'Kisei (a bathroom) close to one's table. 2
What is the significance of a B'rachah in the field?
Bava Metzi'a. 107a #1: It means fields are close to the town.
Bava Metzi'a. 107a #2: It means that one;s property is divided into three parts - a third in crops, a third in olives and a third in vines. 1
See Torah Temimah, note 6.
What is the difference between a B'rachah in the town and a B'rachah in the field?
Da'as Zekenim #1 and Rosh: They refer to Mitzvos that one does in the town - Sukah and Mezuzah, and to Mitzvos that one does in the field - leaving Leket, Shikchah and Pe'ah.
Da'as Zekenim #2: "Ir" refer to Yerushalayim, which is called "Ir ha'Kodesh" (Yeshayah 52:1), and "Sadeh", to Tziyon, which is called "Sadeh" ? "Tziyon Sadeh Techerash." - in Yirmiyah 26:18.