how to remove sugar cane (Farming Simulator 15)

Crops installed are:
Cotton - uses round head!
Oat - uses round head!
Soybean - uses round head!
Millet - uses round head!
Sorghum - uses flat head!
SugarCane - uses round head! "round nozzle?"
Sunflower - uses flat head!

And what does it mean?

Really no one will help. There must be a technique for harvesting reeds (they sow it).