Clover and turnips: what it changes for a pre-industrial city

Clover and turnips: no field left fallow, harvests +20%.

A city of 20,000 on a river, in a temperate forest

With it: 2,300 km² of countryside, 1 day by cart (comfortable)
Without it: 4,500 km² of countryside, 1.5 days by cart (strained)

Ages that know it

18th century

Other techniques

Heavy plough, Three-field rotation, 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

Orders of magnitude for play: sourced figures and Hearth estimates together. Every source, and every figure still waiting for one, is listed in the builder under Sources.

Open the city builder — MGS Toolbox