Posted: Sep 29, 2013 10:10 AM by Pat Shingleton
Weed pulling is a year-rond chore in South Louisina. "The vine that ate the South" is the Kudzu plant, native to Asia and introduced to the United States in the 19th Century. As noted in a previous column, it was classified as a pest weed by the Dept. of Agriculture 50 years ago. In addition to being a nuisance, scientists determined it aids in the formation of harmful low-level ozone. Researchers compared Kudzu growth in Georgia to regions where it was absent noting that the Kudzu sections held twice as much nitric oxide emissions. When nitric oxide interacts with sunlight, ozone or photochemical smog occurs. The National Academy of Science revealed that Kudzu covers 7.8 million acres in the Southeast, spreading to 120,000 acres each year.