455. Express covenants as to management of farm by tenant.

The management of the farm is usually regulated by express covenants, which may prescribe a particular system of tillage1, or may contain a general covenant to cultivate in a husbandlike manner2 according to the best rules of husbandry practised in the district. Compliance with a covenant to treat a farm in a good and husbandlike manner is proved by evidence of management in accordance with the custom of the country3. A covenant to cultivate on a particular system according to the custom of the country binds the tenant to adopt the system only so far as the custom makes