Case Note, Landlord-Tenant-Oral Lease of Agricultural Lands for Grazing, Without an Agreement to the Contrary, Implies No Warranty of Suitability for a Particular Purpose upon the Lessor but May Impose Liability by Virtue of Joint Control of the Premises-Knapp v. Simmons [345 N.W. 2d 118 (Iowa)], 34 DRAKE L. REV. 561-567 (1984).