Mapleton, North Dakota-based Horsch, a manufacturer of seeding, planting, tillage and application equipment, has introduced two new models to its line of Joker RT high-speed discs: the RT18 and RT22. The RT18 has an 18-foot 4-inch working width and the RT22 has a 21-foot 8-inch working width. Both models offer a drawbar hitch and three-section design for closely following ground contours. The new Joker RT18 and RT22 include 20-inch notched blades that are mounted at a 17-degree angle for optimum soil engagement and residue/soil mixing. Rubber torsion arms help protect the blades against damage from foreign objects and oil-filled bearings provide long life with zero maintenance. Manual or electronic depth control is available for maintaining precise, consistent tillage depth throughout the field. Additionally, an integrated RollFlex finishing system optimizes soil consolidation and field finish to produce excellent planting conditions and promote rapid emergence of seed. The Joker RT includes aggressive crop residue management through sizing and mixing of the soil and residue, as well as consolidation of the soil profile for accelerated residue decomposition. For more information, see a dealer or visit www.horsch.com.