Fertilizing in the 1920s

Charles Shuman>UIS Collection S>UIS Collection S, Segment 13

Fertilizing in the 1920s,

duration 00:41

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University of Illinois' College of Agriculture Soil Fertility Program under Cyril G. Hopkins advocated a formula of lime, legumes, and phosphates. Shuman applied lime to his entire farm in 1922. No one had done it before. More information follows.