Earliest-known Evidence Of Peanut, Cotton And Squash Farming Found

Source: Vanderbilt University
Date: June 29, 2007

Science Daily — Anthropologists working on the slopes of the Andes in northern Peru have discovered the earliest-known evidence of peanut, cotton and squash farming dating back 5,000 to 9,000 years. Their findings provide long-sought-after evidence that some of the early development of agriculture in the New World took place at farming settlements in the Andes.

The discovery was published in the June 29 issue of Science.

The research team made their discovery in the Ñanchoc Valley, which is approximately 500 meters above sea level on the lower western slopes of the Andes in northern Peru.

"We believe the development of agriculture by the Ñanchoc people served as a catalyst for cultural and social changes that eventually led to intensified agriculture, institutionalized political power and new towns in the Andean highlands and along the coast 4,000 to 5,500 years ago," Tom D. Dillehay, Distinguished Professor of Anthropology at Vanderbilt University and lead author on the publication, said. "Our new findings indicate that agriculture played a broader role in these sweeping developments than was previously understood."

Dillehay and his colleagues found wild-type peanuts, squash and cotton as well as a quinoa-like grain, manioc and other tubers and fruits in the floors and hearths of buried preceramic sites, garden plots, irrigation canals, storage structures and on hoes. The researchers used a technique called accelerator mass spectrometry to determine the radiocarbon dates of the materials. Data gleaned from botanists, other archaeological findings and a review of the current plant community in the area suggest the specific strains of the discovered plant remains did not naturally grow in the immediate area.

"The plants we found in northern Peru did not typically grow in the wild in that area," Dillehay said. "We believe they must have therefore been domesticated elsewhere first and then brought to this valley by traders or mobile horticulturists.

"The use of these domesticated plants goes along with broader cultural changes we believe existed at that time in this area, such as people staying in one place, developing irrigation and other water management techniques, creating public ceremonials, building mounds and obtaining and saving exotic artifacts."

The researchers dated the squash from approximately 9,200 years ago, the peanut from 7,600 years ago and the cotton from 5,500 years ago.

Dillehay published the findings with fellow researchers Jack Rossen, Ithaca College, Ithaca, N.Y.; Thomas C. Andres, The Curcurbit Network, New York, N.Y.; and David E. Williams, U.S. Department of Agriculture, Washington, D.C.

Dillehay is chair of the Department of Anthropology at Vanderbilt, Professor Extraordinaire at the Universidad Austral de Chile and was elected to the American Academy of Arts and Sciences in 2007.

The research was supported by the Instituto Nacional de Cultura, Lima; the National Science Foundation; the Heinz Foundation; the University of Kentucky and Vanderbilt University.

Note: This story has been adapted from a news release issued by Vanderbilt University.

Recently Excavated Headless Skeleton Expands Understanding Of Ancient Andean Rituals

Science Daily — Images of disembodied heads are widespread in the art of Nasca, a culture based on the southern coast of Peru from AD 1 to AD 750. But despite this evidence and large numbers of trophy heads in the region's archaeological record, only eight headless bodies have been recovered with evidence of decapitation, explains Christina A. Conlee (Texas State University). Conlee's analysis of a newly excavated headless body from the site of La Tiza provides important new data on decapitation and its relationship to ancient ideas of death and regeneration.

As Conlee outlines in the June issue of Current Anthropology, the third vertebrae of the La Tiza skeleton has dark cut marks, rounded edges, and no evidence of flaking or breakage, indicating decapitation occurred at or very soon after the time of death. A ceramic jar decorated with an image of a head was placed next to the body. The head has a tree with eyes growing out of it, the branches encircling the vessel.

"Ritual battles often take place just before plowing for potato planting, and trees and unripened fruit figure in these rituals, in which the shedding of blood is necessary to nourish the earth to produce a good harvest," Conlee writes. "The presence of scalp cuts on Nasca trophy heads suggests the letting of blood was an important part of the ritual that resulted in decapitation."

Conlee also points to damage on the jar that indicates it had already been handled and used before being included in the tomb. This was only the third head jar found with a headless skeleton. Most are found at domestic sites, and prior research has concluded that they were probably used to drink from, most likely in connection with fertility rituals. "If the head jar was used to drink from during fertility rituals, then its inclusion in the burial further strengthens the relationship between decapitation and rebirth," Conlee explains.

Notably, there is also no evidence of habitation in the La Tiza region during the Middle Nasca period (AD 450-550), to which the head jar dates. All of the Nasca domestic sites in the area date to the Early Nasca, indicating that the La Tiza skeleton may have been deliberately buried in an abandoned settlement that was associated with the ancestors.

"Human sacrifice and decapitation were part of powerful rituals that would have allayed fears by invoking the ancestors to ensure fertility and the continuation of Nasca society," Conlee writes. "The decapitation of the La Tiza individual appears to have been part of a ritual associated with ensuring agricultural fertility and the continuation of life and rebirth of the community."

Reference: Christina A. Conlee, "Decapitation and Rebirth: A Headless Burial from Nasca, Peru." Current Anthropology 48:3.

Note: This story has been adapted from a news release issued by University of Chicago Press Journals.