Land leasing for market gardening is a tricky proposition. You are leasing someone elses land, endeavouring to improve it beyond the condition you took it over in by adding fertiliser and treating it with sprays to drive out pests and disease. You are paying for the privilege of doing this, on the intention to turn a profit from the crop you will hopefully extract at some stage (weather and crop dependent) in the future.
Rotation and rest mean the appropriate properties to lease can be difficult to come by, and some of us may jump in before doing a full due diligence on the property in question. As an Accountant I can't give you the detailed critique around soil acidity, nitrogen levels, disease presence. But something I can talk about is the average spend per effective acre.