For mechanical weed control in the row, Kress developed the Finger Weeder. The Finger Weeder is constructed around a rotating disc with polyurethane fingers. The fingers are driven by a cast iron sprocket that drives through the soil. The flexible fingers move in between the plants in the row and make the young weeds loose so they dry out. The machine is successfully applied in leeks, maize, sunflowers, sugar beet and iceberg lettuce. For row distances between 25 and 40 cm, smaller Finger Weeder sets are available as can be seen in the pictures below.