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1493_ Uncovering the New World Columbus Created - Charles C. Mann [259]

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fought erosion, but were eventually overwhelmed (Will 1980:278–82).

42 Dazhai: Zhao and Woudstra 2007 (slogans, 193); Shapiro 2001:95–114, 137 (calluses, 99; slogans, 96, 107). Zhao and Woudstra credit Dazhai more than Shapiro. Several China scholars—and some Chinese provincial officers—told me that Dazhai had been a fraud from the beginning. None offered proof, though.

43 20 percent: Author’s interview, Zhang Liubao (village leader in Zuitou, Shaanxi).

44 Loess Plateau: Mei and Drengne 2001. It covers ~720,000 km2; the nations, ~620,000 km2.

45 Soil layers: Author’s interview, David Montgomery; Montgomery 2007:21–22.

46 Silt and buildup of Huang He: Mei and Dregne 2001 (one to three inches, forty feet, 12); Will 1980.

47 Huang He management: Pomeranz, e-mail to author; Davids 2006; Elvin 2004:128–40; Dodgen 2001:esp. chaps. 1–3 (Great Wall comparison, 3).

48 1780–1850 floods: Central Bureau of Meteorological Sciences 1981.

49 Erosion boom in Loess Plateau: Wei et al. 2006:13 (one-third, fig. 4—I am approximating). In addition, the level of soil organic matter fell below 1 percent in many areas; typical figures for U.S. farmland are 5 to 8 percent (author’s interview, Zhang Zhenzhong, Shaanxi Provincial Institute for Loess Plateau Control).

50 Erosion causes Zuitou migration: Author’s interviews, Zuitou.

51 Anti-deforestation programs: Author’s interview, Lu Qi, Institute of Desertification Studies, Chinese Academy of Forestry; Yu et al. 2006:236; Levin 2005.

52 “3-3-3” system: Author’s interviews, Lu; Gaoxigou officials; Liu Guobing, Research Institute of Water and Soil Conservation in Northwest China, Chinese Academy of Sciences; Xu et al. 2004.

53 Problems with tree planting: Author’s visits; Normile 2007; Yu, Yu, and Li, 2006.

CHAPTER 6 / The Agro-Industrial Complex

1 Introductory potato facts: Spooner and Hijmans 2001:2101 (species and types [but see later discussion]); Clarkson and Crawford 2001:70–73 (12.5 lbs.); Zuckerman 1998:83 (Marie Antoinette [but see below]); Bourke 1993:90–100 (potato consumption, table 4); Salaman 1985:572–73 (potato war); Kon and Klein 1928 (167-day diet); Gerard 1633: 752 (“knowledge of them”), 925 (“Virginia potato,” “common potatoes”). Production rankings from Food and Agriculture Organization (faostat.fao.org). Laufer (1938:15) dismisses the story of Marie Antoinette/Louis XVI as “a good historiette.” McNeill (1999:78), Salaman (1985:599), and Langer (1975:55) accept the tale. Cuvier (1861:vol. 2, 15), who knew Antoine-Augustin Parmentier, the supposed provider of the potato flowers, reports that Louis XVI wore the plant in his buttonhole, inspiring the vogue.

2 Giant potato: Anon. 2008. “Lebanese Finds ‘Heaviest’ Potato,” British Broadcasting System, 8 Dec. (http://news.bbc.co.uk/2/hi/middle_east/7771042.stm).

3 Potato as Europe’s savior: Standage 2009:120–29; Reader 2009:95–117; McNeill 1999:69 (“and 1950”); Zuckerman 1999:220–28 (his book’s subtitle is “How the Humble Spud Rescued the Western World”).

4 Drake statue: Reddick 1929.

5 Andean societies: Good overviews include Silverman ed. 2004, D’Altroy, 2002, and esp. Moseley 2001. A popular summary is Mann 2005:chaps. 6–7. See also Gade 1992 (“sophistication,” 461), 1975. Eruptions: Siebert and Simkin 2002–.

6 Evolution of S. tuberosum: Zimmerer 1998:446–49ff.; Brush et al. 1995:1190; Grun 1990 (four species); Ugent et al. 1987 (thirteen thousand); Ugent et al. 1982 (2000 B.C.).

7 Clay and solanine: Guinea 2006; Browman 2004 (licking); Johns 1986 (adsorption); Weiss 1953. My thanks to Clark Erickson for telling me about these sources.

8 Andean potato treatments: Author’s visits; e-mail, Clark Erickson; Yamamoto 1988; Gade 1975:210–14. My thanks to Susanna Hecht for pointing out the parallel between chuño and gnocchi.

9 Twenty degrees: Mayer 1994:487.

10 Terraces: Sarmiento de Gamboa 2009:132 (“andenes”); Denevan 2001:17–18, 170–211 (extent of terracing, 175); Donkin 1979. My thanks to Clark Erickson and Bill Denevan for helpful discussions.

11 Raised fields: Denevan 2001:24–25, 219, 264–65; Erickson 1994.

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