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Why does land wear out? This great agricultural mystery led generations of farmers to simply move when the land no longer supported agricultural production. That changed in 1905, when a soil scientist unearthed the key to sustained productivity by linking soil erosion and degradation of soil quality. continuar a ler....
Taking the guesswork out of soil classification
ScienceDaily (2010-06-07) -- A researcher has developed a technique that uses digital imaging of soil samples to take some of the guesswork out of wetland identification. ... > read full article