BIOL1300 Lecture Notes - Lecture 33: Staple Food, Vitamin A, Buttermilk
29 May 2017
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Document Summary
The above pictures show the same location before and after the reintroduction of perennial grass cover. Soil conservation practices like cover cropping, returning land to perennial cover, and contour plowing helped reduce blowing dust by 65% in the late 1930s. However, the dust bowl conditions did not completely lift until 1939. In 1845, a combination of social and ecological factors caused widespread famine. As a result of the famine, ireland lost one-fifth of its population through emigration and death. The famine killed about one million people ( of the population). Over 1 million people emigrated to north america. Before the famine, approximately 2 million acres ( of all irish agricultural land) were devoted to potatoes. The potato originated in peru, and was brought to europe by spanish sailors in the 1500s. Potatoes were originally used as food for animals, and became a staple food for the poor and moderately poor.
