(1)    No landowner-cropper contract is valid, except between the parties to the contract, unless the contract, subscribed by the parties, describing the premises and containing the entire agreement between the parties, or a copy of the contract, has been filed with the register of deeds of the county where the premises are located. The register of deeds shall file, endorse, enter and index croppers’ contracts filed with the register of deeds in substantially the same manner as provided for financing statements covering security interests in fixtures.

   (2)   In case such cropper contract is not filed then, except between the parties thereto, the cropper shall be conclusively presumed to have title and possession to an undivided one-half interest in all crops covered by such contract and the relationship between the landowner and cropper to be that of landlord and tenant.

   (3)   Such cropper contract is not subject to ch. 409 unless the contract expressly creates a security interest.