Friday, February 17, 2012
World Freshwater: Real vs Virtual
The NYTimes article Tracking How the World Guzzles Water
By JOANNA M. FOSTER interests me because I have two half sections that are dry land farmed near Grant, Nebraska.
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The circles on the map show intense pivot irrigation agricultural practice.
T-L Center Pivot Irrigation System
The sprayers under the pivot boom are positioned above the final crop head height. These sprayers are a recent innovation delivering moisture closer the ground. The pivot irrigation practice in western Nebraska requires significant amounts of water pumped from the Ogallala Aquifer that is nominally threatened by the Keystone XL Pipeline.