Performance Evaluation of Vertical Discs and Disc Coulters for Conservation Tillage in an Intensive Rice–Wheat Rotation System

As an advanced agricultural production technology, conservation tillage has been developed rapidly and adopted widely for many crops all over the world, but challenges remain with regard to dealing excessive residues, especially intensive rice–wheat rotation systems. Most studies date have based on a single type of tool indoor bin test explore its performance. Accurate field data performance different types tools are lacking in this area. In study, five were tested paddy plenty crop residues compare their They three vertical discs plain disc (PD), notched (ND), rippled (RD) two coulters coulter (PDC) (NDC). All using specific rig at working depths 70 100 mm. Tillage forces, straw cutting efficiency, soil disturbance width, depth measured. The results showed that geometry had significant impact performed higher average as well lower forces width than coulter. For handling furrowing operations, RD highest moderate force, appropriate among tools. tools, mm 40% draught 39% greater 18% efficiency average. no-tillage seeding system, would be more suitable rotary practice.