Application of soil improvers such as Nutrigeo or Alasso, Compost Tea, Effective Microorganisms is best done during a soil preparation. On that mahier you can achieve maximum mixing with plant residues in soil with little water. This accelerates mineralization and improves humification. Spraying compost tea during corn seeding also gives great results. Ask us for references.
At Hoeve De Ploeg, they made this detachable sprayer kit that mounts on different tillage machines and on the manure injector. IBC of 500 L in the front or rear ... and drive away!
Also interesting to spray bacterial preparations and trace elements during the same passage.