Irrigation has dramatically changed in the past 40 years, from surface irrigation to hand lines, wheel lines and center pivots. Today, less than half the irrigated acres in the U.S. use flood or ...
From an airliner or space shuttle, they look like perfect green dots on the face of the Earth. Nebraskans know them well. They’re called center pivots and they are one of the marvels of modern-day ...
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