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Nutrient loss from tiled fields has prompted the creation of sub-surface drainage designs that include practices to protect downstream water quality. Iowa State University Extension and Outreach will ...
“The original goals of the project were to evaluate the effects of different subsurface drain spacings on drain flow and corn growth and yield,” says Eileen Kladivko, professor in the Department of ...
WEST FARGO -- Tile drainage of farm fields has been cast as a villain that aggravates flooding in the Red River Valley, but also held out as a great hope for better managing runoff to minimize ...
Morning Overview on MSN
Half the work at Machu Picchu went into foundations no visitor ever sees
Roughly half the construction effort that went into Machu Picchu lies beneath the surface, buried in foundation soils, drainage channels, and retaining-wall cores that no tourist will ever photograph.
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