Three-field rotation: what it changes for a pre-industrial city
Three-field rotation: 2 fields in 3 sown each year.
A city of 20,000 on a river, in a temperate forest
- With it: 4,500 km² of countryside, 1.5 days by cart (strained)
- Without it: 6,000 km² of countryside, 2 days by cart (strained)
Ages that know it
Middle Ages, c. 1300, Early modern
Other techniques
Heavy plough, Clover and turnips, Horse collar, Manure, Marl and lime, Night soil (town waste spread on the fields), Guano and nitrates, Irrigation, Watermills, Windmills, Coal, Metalled roads, Canals and locks, Ocean-going ships, Herring busses and salting at sea, Paper mill, Printing press, Gunpowder, Aqueduct and fountains, Sewers, Filtered water, Vaccination
Open the city builder — MGS Toolbox