The History of Domestication for Broomcorn Millet

Broomcorn or broomcorn millet (Panicum miliaceum), also known as proso millet, panic millet, and wild millet, is today primarily considered a weed suitable for birdseed. But it contains more protein than most other grains, is high in minerals and easily digested, and has a pleasant nutty taste. Millet can be ground up into flour for bread or used as a grain in recipes as a replacement for buckwheat, quinoa or rice. Broomcorn History Broomcorn was a seed grain used by hunter-gatherers in China at least as long ago as 10,000 years. It was first domesticated in China, probably in the Yellow River valley, about 8000 BP, and spread outward from there into Asia, Europe, and Africa. Although the ancestral form of the plant has not been identified, a weedy form native to the region called P. m. subspecies ruderale) is still found throughout Eurasia. Broomcorn domestication is believed to have taken place about 8000 BP. Stable isotope studies of human remains at sites such as Jiahu, Banpo, Xinglongwa, Dadiwan, and Xiaojingshan suggest that while millet agriculture was present ca 8000 BP, it did not become a dominant crop until about a thousand years later, during the Middle Neolithic (Yangshao). Evidence for Broomcorn Broomcorn remains which suggests a highly developed millet-based agriculture have been found at several sites associated with Middle Neolithic (7500-5000 BP) cultures including the Peiligang culture in Henan province, the Dadiwan culture of Gansu province and the Xinle culture in Liaoning province. The Cishan site, in particular, had more than 80 storage pits filled with millet husk ashes, totaling an estimated 50 tons of millet. Stone tools associated with millet agriculture include tongue-shaped stone shovels, chisel-edged sickles and stone grinders. A stone millstone and grinder were recovered from the early Neolithic Nanzhuangtou site dated to 9000 BP. By 5000 BC, broomcorn millet was flourishing west of the Black Sea, where there are at least 20 published sites with archaeological evidence for the crop, such as the Gomolava site in the Balkans. The earliest evidence in central Eurasia is from the site of Begash in Kazakhstan, where direct-dated millet seeds date to ca 2200 cal BC. Recent Archaeology Studies of Broomcorn Recent studies comparing the differences of grains a broomcorn millet from archaeological sites often vary a great deal, making them difficult to identify in some contexts. Motuzaite-Matuzeviciute and colleagues reported in 2012 that millet seeds are smaller in response to environmental factors, but relative size also can reflect the immaturity of the grain. depending on charring temperature, immature grains can be preserved, and such size variation should not rule out identification as broomcorn. Broomcorn millet seeds were recently found at the central Eurasian site of Begash, Kazakhstan, and Spengler et al. (2014) argue that this represents evidence for the transmission of broomcorn outside of China and into the broader world. See also Lightfoot, Liu, and Jones for an interesting article on the isotopic evidence for millet across Eurasia. Sources and Further Information Bettinger RL, Barton L, and Morgan C. 2010. The origins of food production in north China: A different kind of agricultural revolution. Evolutionary Anthropology: Issues, News, and Reviews 19(1):9-21.Bumgarner, Marlene Anne. 1997. Millet. Pp. 179-192 in The New Book of Whole Grains. Macmillan, New York.Frachetti MD, Spengler RN, Fritz GJ, and Maryashev AN. 2010. Earliest direct evidence for broomcorn millet and wheat in the central Eurasian steppe region. Antiquity 84(326):993–1010.Hu, Yaowu, et al. 2008 Stable isotope analysis of humans from Xiaojingshan site: implications for understanding the origin of millet agriculture in China. Journal of Archaeological Science 35(11):2960-2965.Jacob J, Disnar J-R, Arnaud F, Chapron E, Debret M, Lallier-Vergà ¨s E, Desmet M, and Revel-Rolland M. 2008. Millet cultivation history in the French Alps as evidenced by a sedimentary molecule. Journal of Archaeological Science 35(3):814-820.Jones, Martin K. and Xinli Liu 2009 Origins of Agricul ture in East Asia. Science 324:730-731.Lightfoot E, Liu X, and Jones MK. 2013. Why move starchy cereals? A review of the isotopic evidence for prehistoric millet consumption across Eurasia. World Archaeology 45(4):574-623. doi: 10.1080/00438243.2013.852070Lu, Tracey L.-D. 2007 Mid-Holocene climate and cultural dynamics in eastern Central China. Pp. 297-329 in Climate Change and Cultural Dynamics: A Global Perspective on Mid-Holocene Transitions, edited by D. G. Anderson, K.A. Maasch and D.H. Sandweiss. Elsevier: London.Motuzaite-Matuzeviciute G, Hunt H, and Jones M. 2012. Experimental approaches to understanding variation in grain size in Panicum miliaceum (broomcorn millet) and its relevance for interpreting archaeobotanical assemblages. Vegetation History and Archaeobotany 21(1):69-77.Pearsall, Deborah M.2008 Plant domestication. Pp. 1822-1842 In Encyclopedia of Archaeology. Edited by D. M. Pearsall. Elsevier, Inc., London.Song J, Zhao Z, and Fuller DQ. 2013. The archaeobotanical significance of immature millet grains: an experimental case study of Chinese millet crop processing. Vegetation History and Archaeobotany 22(2):141-152.Spengler III RN, Frachetti M, Doumani P, Rouse L, Cerasetti B, Bullion E, and Maryashev A. 2014. Early agriculture and crop transmission among Bronze Age mobile pastoralists of Central Eurasia. Proceedings of the Royal Society B: Biological Sciences 281(1783). doi: 10.1098/rspb.2013.3382USDA. Panicum millaceum (broomcorn millet) Accessed 05/08/2009.Yan, Wenming. 2004. The Cradle of Eastern Civilization. pp 49-75 In Yang, Xiaoneng. 2004. Chinese Archaeology in the Twentieth Century: New Perspectives on Chinas Past (vol 1). Yale University Press, New Haven