🔬 Discovery

Soybean domestication

Domesticación de la soja

Date
c. 3000-1000 BCE · confidence low
Place
Middle Yellow River valley, Henan, China
Credited to
Neolithic farmers of northern China
Field
Life & health

⚠️ Disputed: the sources disagree.

What was discovered

Wild soybean was gradually domesticated: seeds increase in size from c. 3000 BCE and the plant is well established by the Zhou period. It fixes nitrogen in the soil and provides high-quality protein.

Archaeobotanical data point to several centres (northern China, Korea, Japan); the exact timeline is still debated.

What it led to

  • rotation of cereals with legumes
  • fermented and processed foods such as tofu and soy sauce
  • spread to Korea, Japan and, in the 20th century, to America
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Sources✓ verified 2026-09-23