Mounted row crop cultivator Vario Digger

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Tufts of grass can be effectively crushed when reallocating old meadows and seed fields. The CMN couch grass killer cuts through the field by means of the tines of the strong stubble harrow, which is equipped with 48 cm wide wing shares. The earth has now been loosened up for a slow-moving pickup that rotates against the direction of motion. By churning up the soil, the pickup gathers organic material, such as roots of couch grass, thistle, mugwort etc, and exposes it. The combination of the low speed of the pickup and the high volume weight of the soil ensures that soil and stones pass under the pickup, whereas the organic material will be dragged over the pickup and left on the soil for drying or collection. The couch grass problem Couch grass is a greedy plant that competes with crops for light, water and nutrients and it is capable of reducing the crop yield by 30-50%. The table below shows the reduction of spring barley yield due to couch grass. Source: Landscentret planteavl, Denmark. Amount of couch grass per m2 in June Loss of yield 10-100 5% 100-200 10% 200-400 25% 400-800 50% Mechanical control of couch grass requires that the roots are brought to the surface in order to dry out or freeze. Destruction of root weeds at high soil temperature entails the risk of nitrogen leaching, since there will be no plants to absorb the amounts released.