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Asian soybean rust has (so far) fizzled  Five reasons why Asian
soybean rust has (so far) fizzled  Agriculture.com Staff
12/21/2006 @ 12:59pm  Don't let down your Asian soybean rust
guard yet.  But at this point, the odds of Asian soybean rust
striking the Midwest are lower than researchers first believed
two years ago.  There was good reason to fear Asian rust when it
first surfaced in the United States in November 2004. "When you
look at rust in Brazil, it's really bad," says X. B. Yang, an
Iowa State University (ISU) plant pathologist who reported on
his findings at this month's Integrated Crop Management
Conference at ISU.  Left untreated, Asian rust has sliced
Brazilian soybean yields up to 80%. Conditions conducive to the
spread of rust -- leaf wetness for more than six hours a day and
temperatures between 60 and 80 degrees -- are common during dewy
evenings and mornings during the U.S. growing season.  Asian
rust confirmation increased in