In order to qualify for a property tax credit, a parcel of land or, any portion thereof: shall be an urban agricultural property that is being used for urban agricultural purposes; may not be used for any other for-profit purpose that would subject the parcel to property tax liability; and unless a waiver is granted under Subsection (d), shall produce agricultural products valued at Two Thousand Five Hundred Dollars ($2,500) or more per tax year. A waiver may be granted for start up properties for up to two (2) years or for a declared natural disaster or drought.