"As well as adopting the new s, European s increased production by bringing more land under cultivation and developing new agricultural techniques. In particular, they introduced crop rotations involving clover and turnips (most famously, in Britain, the of turnips, , , and ). Turnips were grown on land that would otherwise have been left fallow, and then fed to animals, whose manure enhanced the barley yields the following year. Feeding animals with turnips also meant that land used for pasture could instead be used to grow crops for human consumption."