I’m not a proponent of Ammonia Fertilizer, because of what it does to tight clay soil. Those in sandy soil, are not harmed as much.
Anhydrous Ammonia is the cheapest fertilizer, but really damages soil culture.
For a long time, no till or limited till was a big booster. Of course it is dependent upon RoundUp. Or like in Central America where they have huge rainfall, they can cover crop rotate.