By owning private agricultural land in Israel and employing exclusively Jewish labor, a purchaser is observing the following mitzvot:
Orlah – refraining from fruit in the first three years of the tree’s growth
Trumot, Maasrot – tithes from annual produce for Kohen, Levite and Poor
Leket, Shikcha, Peah – portions of annual harvest allocated for the poor
Shmitta – leaving fields fallow once every seven years
Currently, Buy a Piece of Israel manages olive groves in the Upper Galilee village of Rosh Pina, and more recently has established an olive grove in Yavniel (Yavne’el) in the Lower Galilee.