The only reason for minimum soil tillage before conversion to no-till may be undulated fields. 

Despite numerous tillage operations, the conventional fields may still be uneven. 

Uneven field is very difficult to work on for any tool, such as a drill, a sprayer and a combine. This is not only the cause of poor-quality seeding or harvest but also challenging for an operator working in a cab. 

How do I determine, whether a field requires leveling. 

After harvest, try to drive a car parallel to its sides and diagonally. Another good option would be to do the same on a sprayer with its booms in working position.

After these driving experiences, you'll immediately understand whether your fields require leveling. 

There can be several challenging plots on a field, such as undulations remaining after ridges collapse. If this is the case, you don't need to level the whole field. You can just address these challenging plots. 

If you have stones in fields, which can damage the machinery, proceed to collect them (at least the biggest ones) from the very beginning. You'll return to collect more stones which you might have missed or those that surfaced again.

Seeder

In order to convert to no-till you need to have implements capable of seeding into an untilled soil. Some farmers purchase their machines, some rent them and some use self-made drills. It's up to every individual farmer and depends on their capabilities

Buy or Rent?

Let's address all options: Each seeder will have its…