New and Future Technology

Judging from archaeological evidence, irrigation has been practiced for at least eight millennia, starting in the Nile, followed by the Tigris and Euphrates in Mesopotamia, the Yellow River in China, and the Indus River in India (Hoffman et al., 1990). During this time, the experience and skill of humankind has been accumulated, improved with an eye toward future needs, and yet sometimes still lost to history. Therefore, capturing the state of the art of irrigation is clearly worthwhile. On the other hand, predicting the future is far less so clearly worthwhile. We recognize that our foresight may well in time be proven dim. Bearing in mind the context of 80 centuries, however, we attempt to describe new and predict future trends.

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