History of agriculture
Wild grains were collected and eaten from at least 20,000 BC. From around 9500 BC, the eight Neolithic founder crops – emmer wheat, einkorn wheat, hulled barley, peas, lentils, bitter vetch, chick peas, and flax – were cultivated in the Levant. Rye may have been cultivated earlier but this remains controversial. Rice was domesticated in China by 6200 BC with earliest known cultivation from 5700 BC, followed by mung, soy and azuki beans. Pigs were domesticated in Mesopotamia around 11,000 BC, followed by sheep between 11,000 BC and 9000 BC. Cattle were domesticated from the wild aurochs in the areas of modern Turkey and Pakistan around 8500 BC. Sugarcane and some root vegetables were domesticated in New Guinea around 7000 BC. Sorghum was domesticated in the Sahel region of Africa by 5000 BC. In the Andes of South America, the potato was domesticated between 8000 BC and 5000 BC, along with beans, coca, llamas, alpacas, and guinea pigs. Bananas were cultivated and hybridized in the same period in Papua New Guinea. In Mesoamerica, wild teosinte was domesticated to maize by 4000 BC. Cotton was domesticated in Peru by 3600 BC. Camels were domesticated late, perhaps around 3000 BC.
Tell Abu Hureyra
It is from the early part of the Younger Dryas that the first indirect evidence of agriculture was detected in the excavations at Abu Hureyra, although the cereals themselves were still of the wild variety. It was during the intentional sowing of cereals in more favourable refuges like Mureybet that these first farmers developed domesticated strains during the centuries of drought and cold of the Younger Dryas. When the climate abated about 9500 BCE they spread all over the Middle East with this new bio-technology, and Abu Hureyra grew to a large village eventually with several thousand people. The second occupation grew domesticated varieties of rye, wheat and barley, and kept sheep as livestock. The hunting of gazelle decreased sharply, probably due to overexploitation that eventually left them extinct in the Middle East. At Abu Hureyra they were replaced by meat from domesticated animals. The second occupation lasted for about 2,000 years.