'Furrows' in the Bible

They have spoken words, swearing falsely in making a covenant: thus judgment springeth up as hemlock in the furrows of the field.

It is in my desire that I should chastise them; and the people shall be gathered against them, when they shall bind themselves in their two furrows.

Is there iniquity in Gilead? surely they are vanity: they sacrifice bullocks in Gilgal; yea, their altars are as heaps in the furrows of the fields.