Spike roller

The spike roller. It is a tree plant that consists of a scaffolding rectangular wood supported by two side bars on which they go two metal cylindrical rollers fitted with spigons arranged in linear form. The rutlon birch is articulated by one or two wheels fixed to the heads of an axis, which allows to manipulate it up and down with the spike system or toothbar. It was used to weed or to break the crust of the soil in forment crops and transplanted onion fields.