https://feedsax.arch.ox.ac.uk/index.html
“A revolution in medieval farming
Between the 8th and 13th centuries, the population of England grew to unprecedented levels. This could not have happened without a major expansion of arable farming, a development that culminated in the emergence of open field agriculture. As well as feeding more mouths, the production of large cereal surpluses sustained the growth of towns and markets. It also fuelled wealth inequality and the rise of lordship.”
Why not see what was introduced and grow it yourself?
Read the project notes and get stuck in with the Bramblewood Project