Why were mouldboard ploughs more efficent?

Mouldboard ploughs were more efficient because their curved blades effectively turned and aerated the soil, promoting better seedbed preparation. This design allowed for deeper tillage, which improved soil structure and drainage. Additionally, the mouldboard plough facilitated the turning of weeds and residues into the soil, enhancing nutrient availability for crops. Overall, this led to higher crop yields and reduced the need for multiple passes over the field.