Three Sisters (agriculture)

The Three Sisters are the three main agricultural crops of various indigenous groups in North America: winter squash, maize (corn), and climbing beans (typically tepary beans or common beans). Originating in Mesoamerica, these three crops were carried northward, up the river valleys over generations, far afield to the Mandan and Iroquois who, among others, used these "Three Sisters" for food and trade.

Three Sisters as featured on the reverse of the 2009 Native American U.S. dollar coin

In a technique known as companion planting the three crops are planted close together. Flat-topped mounds of soil are built for each cluster of crops.[1] Each mound is about 30 cm (12 in) high and 50 cm (20 in) wide, and several maize seeds are planted close together in the center of each mound. In parts of the Atlantic Northeast, rotten fish or eels are buried in the mound with the maize seeds, to act as additional fertilizer where the soil is poor.[2] When the maize is 15 cm (6 inches) tall, beans and squash are planted around the maize, alternating between the two kinds of seeds. The process to develop this agricultural knowledge took place over 5,000–6,500 years. Squash was domesticated first, with maize second and then beans being domesticated.[3][4] Squash was first domesticated 8,000–10,000 years ago.[5][6]

The three crops benefit from each other.[7] The maize provides a structure for the beans to climb, eliminating the need for poles. The beans provide the nitrogen to the soil that the other plants use, and the squash spreads along the ground, blocking the sunlight, helping prevent the establishment of weeds. The squash leaves also act as a "living mulch", creating a microclimate to retain moisture in the soil, and the prickly hairs of the vine deter pests. Corn, beans, and squash contain complex carbohydrates, essential fatty acids and all nine essential amino acids.

Native Americans throughout North America are known for growing variations of Three Sisters gardens.[8] The milpas of Mesoamerica are farms or gardens that employ companion planting on a larger scale.[9] The Ancestral Puebloans are known for adopting this garden design in a drier environment. The Tewa and other peoples of the North American Southwest often included a "fourth Sister", Rocky Mountain bee plant (Cleome serrulata), which attracts bees to help pollinate the beans and squash.[10]

The Three Sisters planting method is featured on the reverse of the 2009 US Sacagawea dollar.[11]

Cahokian, Mississippian and Mvskoke culture

Corn, squash and beans were planted ca. 800 AD in the largest Native American city north of the Rio Grande known as Cahokia, in what is now known as the US state of Illinois, across the river from St Louis, Missouri. The Three Sisters crops were responsible for the surplus food that created an expanded population throughout the extended Mississippi River valley and tributaries, creating the Mississippian and Mvskoke cultures that flourished from ca. 800 ce to ca. 1600 when physical contact with Spanish explorers brought Eurasian diseases, death, and cultural collapse.

Iroquois culture

Among the Iroquois or Haudenosaunee, notably the Seneca, women were responsible for crop cultivation, including the 'Three Sisters'. Men had more cause to travel for extended periods of time, such as for hunting expeditions, diplomatic missions or the tribe's numerous wars with nearby rivals. However, men took part in the initial preparation for the planting of the 'Three Sisters' by clearing the planting ground. After a sufficient area of soil was prepared, groups of women (related to each other) took on all the planting, weeding, and harvesting.[12]

Maya culture

The Maya diet focused on three domesticated staple crops: maize, squash, and beans (typically Phaseolus vulgaris). Among the three, maize was the central component of the diet of the ancient Maya and figured prominently in Maya mythology and ideology. Archaeological evidence suggests that Chapalote-Nal-Tel was the dominant maize species; however, it is likely others were being exploited also.[13] Maize was used and eaten in a variety of ways, but was always nixtamalized.

See also

References

  1. Mt. Pleasant, Jane (2006). "38". In John E. Staller; Robert H. Tykot; Bruce F. Benz (eds.). The science behind the Three Sisters mound system: An agronomic assessment of an indigenous agricultural system in the northeast. Histories of Maize: Multidisciplinary approaches to the prehistory, linguistics, biogeography, domestication, and evolution of maize. Amsterdam: Academic Press. pp. 529–537. ISBN 978-1-5987-4496-5.
  2. Vivian, John (February–March 2001). "The Three Sisters". Mother Earth News. Retrieved September 18, 2013.
  3. Landon, Amanda J. (2008). "The "How" of the Three Sisters: The Origins of Agriculture in Mesoamerica and the Human Niche". Nebraska Anthropologist. Lincoln, NE: University of Nebraska-Lincoln: 110–124.
  4. Bushnell, G. H. S. (1976). "The Beginning and Growth of Agriculture in Mexico". Philosophical Transactions of the Royal Society of London. London: Royal Society of London. 275 (936): 117–120. doi:10.1098/rstb.1976.0074.
  5. Smith, Bruce D. (May 1997). "The Initial Domestication of Cucurbita pepo in the Americas 10,000 Years Ago". Science. Washington, DC: American Association for the Advancement of Science. 276 (5314): 932–934. doi:10.1126/science.276.5314.932.
  6. "Cucurbitaceae--Fruits for Peons, Pilgrims, and Pharaohs". University of California at Los Angeles. Archived from the original on October 16, 2013. Retrieved September 2, 2013.
  7. Hill, Christina Gish (2020-11-20). "Returning the 'three sisters' – corn, beans and squash – to Native American farms nourishes people, land and cultures". The Conversation. Retrieved 2021-01-08.
  8. Wilson, Gilbert (1917). Agriculture of the Hidatsa Indians: An Indian Interpretation. Gloucestershire: Dodo Press. p. 25. ISBN 978-1409942337.
  9. Mann, Charles (2005). 1491: New Revelations of the Americas Before Columbus. New York: Vintage Books. pp. 220–221. ISBN 978-1-4000-3205-1.
  10. Hemenway, Toby (2000). Gaia's Garden: A Guide to Home-Scale Permaculture. White River Junction, VT: Chelsea Green Publishing. p. 149. ISBN 978-1-890132-52-1.
  11. "2009 Native American $1 Coin". United States Mint. Retrieved September 18, 2013.
  12. Bilharz, Joy (2002). The Allegany Senecas and Kinzua Dam: forced relocation through two generations. Lincoln, Neb. Chesham: University of Nebraska Press Combined Academic. p. 8. ISBN 9780803262034.
  13. Benz, B.F. (1986). Taxonomy and Evolution of Mexican Maize (doctoral dissertation). University of Wisconsin, Madison.
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