There were basically two types of tenantry - that on Roman Land and that on the Provincial ager publicus. There was no right in rem and no 'possession. However, if the owner acquiesced, the occupation could be continued on a year to year basis.
Landlords often let their land with all farming equipment included.
The tenant was required to cultivate and had a legal right to abatement of rent if an 'Act of God' destroyed crops. The tenant was required to restore the property to its pre-rental condition at termination of contract. The crops belonged to the landlord while growing and the tenant acquired ownership of the produce only after harvest. The landlord had an automatic lien against the produce for unpaid rent. Tenantry rights became bought, sold and inheritable.