70 to 95 days, determinate — The seeds are small, light green with black eyes, and contain approximately 50% protein (USDA). They are used for edamame (pronounced "ed-uh-mah-may"). The plants are compact, reach about eighteen inches in height, and have purple flowers. Very early maturing and does well in cool, wet soils.
Developed and introduced by Oscar H. Will & Company, Bismarck, North Dakota in about 1953. The USDA accession number is PI 548341. Will developed 'Hidatsa' from PI 81038, called 'Sousei', which is a Japanese edamame variety collected in Hokkaido in 1929. Each packet contains 25 to 30 seeds.
Sow seeds about one inch deep, three to four inches apart. Although you can plant in rows, they can be planted densely and allowed to form a canopy. This will help control weed growth. Soybeans are tolerant of drought and poor soil since they fix nitrogen. They will, however, benefit from fertile soil.
Soybean flowers are perfect (self-fertile) and cross pollination is almost non-existent, making saving seed easy. Allow pods to fully develop and dry on the plants.
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