In any action upon such marketing agreements, it shall be conclusively presumed that a landowner or landlord or lessor is able to control the delivery of any product which is produced on his land by tenants or others, whose tenancy or possession or work on such land, or the terms of whose tenancy or possession or labor on such land, were created or changed after execution by the landowner, landlord, or lessor of such a marketing agreement. In such actions, the remedies for nondelivery or breach which are provided by this article shall lie and be enforceable against such landowner, landlord, or lessor.