A better question is why is any government anywhere designating any of its land for anything? Leave land use as broadly defined as possible (ie you want some re

A better question is why is any government anywhere designating any of its land for anything? Leave land use as broadly defined as possible (ie you want some regulation to stop a steel smelter or high density pork barn operation in high density residential, but not much regulation beyond that type of thing) and get out of the way. Stop subsidizing everybody while you are at it too (defined as a tax code with almost no carve outs that broadly applies to all business equally) and if farming is a bad idea it will go away on its own.