Yayoi Farmers Bring Wet-Rice Agriculture and Metal Tools
Rice paddies and bronze arrive from the Asian mainland and remake how people in Japan live
Quick facts
- Period
- c. 300 BCE to c. 250 CE
- Key technology
- Wet-rice paddy farming, bronze and iron tools
- Origin
- Introduced from the Asian mainland via Korea
- Followed by
- Kofun period
What happened
The Yayoi period runs from about 300 BCE to 250 CE and is defined by technology arriving from the Asian mainland rather than developing locally: wet-rice farming, along with bronze and iron metalworking, spread into Japan at the tail end of the Jomon period and rapidly displaced the older hunter-gatherer economy. Stone tools were phased out in favor of weapons, armor, and ornaments cast in bronze and iron. Rice was grown by sowing seed in small beds and transplanting seedlings into flooded paddy fields, a labor-intensive method that rewarded organized, settled communities over mobile foraging bands.
Why it matters
Wet-rice farming produced reliable food surpluses that could support larger, fixed populations, and those surpluses became a resource that emerging elites could control and tax. The social stratification this made possible is what sets up the chiefdoms and eventually the Yamato state of the following Kofun period.
How we know
The shift is documented through archaeological remains of paddy fields, irrigation channels, and bronze and iron artifacts across Yayoi sites, distinct in material and construction from the preceding Jomon layers.
Sources
- World History Encyclopedia. Yayoi Period · Reputable sourceworldhistory.org · The domain "worldhistory.org" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- Asia for Educators, Columbia University. Early Japanese History: Jomon and Yayoi Periods · Reputable sourceafe.easia.columbia.edu · The domain "afe.easia.columbia.edu" is on our Reputable source registry.
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