SDCL § 7-30-7: Lease on sharecrop basis--Lien on crop.

If any of the land offered for lease is land under cultivation, the commissioners may lease the same either for cash or upon part cash and part sharecrop basis or entirely upon a sharecrop basis according to the bid which in their discretion they may decide to be to the best interest of the taxing districts involved. In case of share rent or part share rent, the lease shall provide for a lien upon the crop and the same shall be filed for record notice of such lien.