Ancient Farming in Peru

A team of anthropologists working in the northern Peruvian Andes has discovered the earliest-known evidence of peanut, cotton and squash farming dating back 5,000 to 9,000 years according to the June 29th, 2007 issue of Science. This discovery provides long-sought evidence some of the early development of agriculture in the New World took place in the Andes. The squash was dated from about 9,200 years ago, the peanut from 7,600 years ago and the cotton from 5,500 years ago.

http://www.reuters.com/article/scienceNews/idUSN2842559620070628