Soybean is an annual legume grown as a crop for its protein-rich beans and oil, with edamame being the young green pods eaten as a vegetable. It thrives in warm conditions with fertile, well-drained soil and full sun.
Family
Fabaceae (Pea & bean family)
Grows as
Climber
Light
Full sun
Water
Keep soil evenly moist during flowering and pod fill, and avoid waterlogging.
Soil
Fertile, well-drained loam; tolerates a range of pH but prefers near neutral.
Temperature
18–30 °C; protect from frost, as it is damaged below about 5 °C.
How easy
Easy
Safety
Not known to be toxic: Raw seeds, leaves and stems contain antinutritional compounds such as trypsin inhibitors and lectins, which are destroyed by cooking.
Edible
Yes, some parts
Native range
Russian Far East to China and Temp. E. Asia
Climate
subtropical
About
The soybean, soy bean, or soya bean (Glycine max) is a species of legume native to East Asia, widely grown for its edible bean. Soy is a staple crop, the world's most grown legume, and an important animal feed.
Soy is a key food source, owing to its high protein and oil content. Soybean oil is widely used in cooking, as well as in industry. Traditional unfermented food uses of soybeans include edamame, as well as soy milk, from which tofu and tofu skin are made. Fermented soy foods include soy sauce, fermented bean paste, nattō, and tempeh. Fat-free (defatted) soybean meal is a significant and cheap source of protein for animal feeds and many packaged meals. For example, soybean products, such as textured vegetable protein (TVP), are ingredients in many meat and dairy substitutes.
How to grow it
Soybeans are globally important agricultural crops, grown as a major source of protein and oil. It prefers fertile, well-drained soils and requires a warm temperate climate with adequate rainfall or irrigation. Soybeans are mainly grown in the United States, Brazil, and Argentina.
It is usually planted in straight rows using modern machinery, and pests and weeds must be controlled to maintain the crop. After maturity, it is harvested using mechanized harvesting machines. Soybeans are used in the production of many food and industrial products, such as tofu, oils, and feed, in addition to their role in improving soil fertility by fixing nitrogen.
Where it grows
Like many legumes, soybeans can fix atmospheric nitrogen, due to the presence of symbiotic bacteria from the Rhizobia group.
Uses
Among the legumes, the soybean is valued for its high (38–45%) protein content as well as its high (approximately 20%) oil content. Soybeans are the most valuable agricultural export of the United States. Approximately 85% of the world's soybean crop is processed into soybean meal and soybean oil, the remainder processed in other ways or eaten whole.
Text excerpted from the Wikipedia article Soybean by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.