So far in 2008, Asian soybean rust discoveries have been limited to states along the
Hot, dry weather in the Southeast has kept spores bottled up, but with tropical storm season here, wet conditions are conducive for spore development and rains and winds can rapidly carry spores hundreds of miles. Earlier this week, spores were discovered in a couple of counties in Georgia and with the wet weather, growers in the Carolinas, Tennessee, Alabama and Mississippi need to be wary and ready to apply fungicides to late-planted soybean crops.
In the past, by the time soybean rust reached Midwestern states, soybeans were in advanced growth stages so rust was not a problem, but because of the floods and wet spring, crops are maturing later and rust could spell yield losses. In particular danger this year is
"This year we have late-planted full season soybeans, and then of course we have some double-crop soybeans and even some of those were planted pretty late," says
The usual pathway rust takes to the
"Now that we're into what looks like an active hurricane season, we have to keep an eye on what's happening in those southern states." Wiebold says. "They are kind of our sentinel plots and as we watch that we'll get an idea of whether we should be concerned or not."