Organic Onion land preparation

Plough the main field four to five times thoroughly and maintain a proper gap between the two ploughings.
Ploughing should be done by tractor or country plough.
Use a leveller to keep the field flat.
Apply bio zinc (zinc solubilising bacteria) @4 kg, Sulphur 80% @8 kg, microbial consortia @80 kg per acre.