I'm planning to buy about 10 hectares of farm and I'm thinking to plant it with potatoes -- let's say it will be an potato farm. But I don't have any idea how to cure and keep the soil healthy to prevent any disease that can be infected to the crops. Can I plant potatoes continuously? I mean, planting after harvest on the same soil? Or is there a possibility that the soil can stress?
You will want to till in soil amendments after each harvest. Wettable sulfur, and dolomitic lime will help condition and keep the soil healthy between plantings, as well. This article will give you more information on soil amendments that would be good to till in at the end of each season: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/improving-garden-soil.htm