Del. Code tit. 25 § 6715
In all cases of renting land wherein a share of the growing crop or crops shall be reserved as rent, or wherein advances are made by the landlord upon the faith of the crops to be grown, said rent reserved and such advances made shall be a lien on such crop or crops, which shall not be divested by any sale by any administrator of a deceased tenant, or by the assignment of the tenant in insolvency, or by process of law issued against the tenant; provided, however, that at the time of the said renting the contract under and by which the said advances are made shall be reduced to writing, duly attested by the said landlord and tenant. Before such advances shall be made a lien, however, the contract under which such advances are made shall be recorded as other liens are recorded in the county wherein the land lies.
25 Del. C. § 6715