Solving the root problem of topsoil loss

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Berns: Soil loss solution is BioGrace

Anyone who has traveled across Iowa on I-80 has perhaps noticed an interesting display at a rest area west of Des Moines. Five outdoor pillars at the site represent in a visual way the loss of topsoil in the state in the more than 170 years since large-scale farming began there. The display shows that in 1850 Iowa had between 14 and 16 inches of topsoil but by the year 2000 it had eroded and bl...

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