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Switchgrass is a hardy, deep-rooted, perennial rhizomatous grass that begins growth in late spring.It can grow up to 2.7 m (8 ft 10 in) high, but is typically shorter than big bluestem grass or indiangrass.
Burma reed is a grass with large, dry plume-like flowerets that invades the pine rockland ecosystem—one of the most endangered habitats in the state—feeding fires. While pine rocklands are maintained by fire, Burma reed can reach 12 feet (3.7 m) tall and burns so hot and high—flames can reach 30 feet (9.1 m)—that it can eradicate the ...
In 1993, the OTA estimated that a total of $100 million is invested annually in invasive species aquatic weed control in the U.S. [19] Introduced rats cause more than $19 billion per year in damages, [20] exotic fish cause up to $5.4 billion annually, and the total costs of introduced weeds are estimated at around $27 billion annually. [21]
The economic impact of kudzu in the United States is estimated at $100 million to $500 million lost per year in forest productivity. [7] In addition, it takes about $5,000 per hectare ($2,000/acre) per year to control kudzu. [7] Power companies must spend about $1.5 million per year to repair damage to power lines.
Using discount rate, "measured in 1997–1998 dollars, California spent about $100 more per capita on its public schools in 1969–1970 than did the rest of the country." [ 70 ] From 1981 to 1982 up until 2000, California had consistently spent less per student than the rest of the U.S., as demonstrated by data collected by the U.S. Bureau of ...