Agriculture

Agriculture is the foundation of civilization, and thus it should be the central focus of players until the modern era.

Red color indicates not yet discovered or invented.

History
Historically, black soils and step farms were some of the first technologies discovered by the Ymaryn, after they learned agriculture from their lowland neighbors. Since then, step farms had spread to the Highland Kingdom and the Xohyr either through gifts or trade.

Technology

 * Black soil - Foundational to Ymaryn agriculture is black soil or terra preta, which improves long term longevity of soils. It is based on some of the soil found in the Amazon rainforest, which was transformed by humans over thousand of years both deliberately and unconsciously. Contrary to popular belief, the soil in the Amazon rainforest are not lush at all, but rather barren. Black soil neatly solve this problem. Terraform options can be unlocked if black soil production is increased enough, but had not been to date.
 * Step Farms - Allowed cultivation of crops on terraced hills or mountain.
 * Seed drill - By correctly positioning the seeds to a certain depth and spacing them to appropriate length between each seed, the seeds will be less likely to be eaten by birds and other creatures and more likely to germinate, improving plant yield. This is most likely acquired after the spread of cheap iron tools enabled by Ironwork.

Plants

 * Rice - Can sustain a much larger population than on wheat, but required much more labor to work the fields. It is usually grown in flooded rice paddies.
 * Sweet potatoes - A crop with one of the greatest yield of calories per acres, even better than rice. This crop can be found in South or Central America, and as such required the development of shipbuilding technology to access the crop.
 * Flax - Can be made into linen.
 * Hemp - Rough textile important to shipbuilding.
 * Cotton - Obtained from the Harmurri in a joint trade mission.