'Rake and Roll' it says on this machine.  The wheat was cut on Sunday and this afternoon the stubble in the field was being roughly raked in different directions with the tines vibrating and helping to create a good tilth.  This evening two other different types of machines have been working but it was getting dark so I am not sure what they were doing. Previously seeds seem to be planted almost straight after the harvest so perhaps they were preparing the field for next year's crop.