Word: soils
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Dates: during 1940-1949
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...midsection of the Mississippi Valley was not the only part of the Midwest in serious trouble last week. A million and a half acres of rich corn soil had been drowned out by rain that had fallen all but nine days during the month of June. The Missouri was 10.3 feet above flood stage and still rising. In Iowa, Agriculture Department experts called erosion losses (over 5 million acres) the worst in corn-belt history...
...other cases, the exceedingly dilute solution defies the most sensitive tests. Then geochemists look to the neighboring plants, whose roots reach into the soil and draw mineral-laden water to the surface. When the water evaporates through the leaves, the minerals it carried remain in the plant's tissues, eventually falling to the ground and becoming part of the humus on the surface. Geophysicists analyze this "biologically enriched" layer and the leaves of growing plants. Finnish geochemists found a rich copper-nickel deposit by examining the ashes of birch leaves...
...Pathan watchman from the North-West Frontier Province thought he might have to go back to the barren soil of his native district. "The Hindu who owns the firm where I work has given me notice, saying he cannot trust foreigners to guard his shop. Who will give me jobs now? What will happen to my family...
...scientists took the hint and tried the stuff on quackgrass, alias witchgrass, one of the peskiest weeds in the northern U.S. As little as 10 lbs. an acre, Agriculture reports, does the deed, killing even the nine-lived underground stems (stolons) which generations of farmers have grubbed from the soil by hand...
...been observed that anti-biotics (such as penicillin), produced by soil bacterial have molecular structures like proteins, although the overall size is considerably smaller. With Woodward's general method, many of these so-called antibiotics have been tured out, but their effectiveness is at yet untested...