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Florida finds soybean rust in sentinel plot; severity up on kudzu
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7/10/2007 3 p.m. CDT -- Florida officials report finding Asian soybean rust in a soybean sentinel plot for the first time in 2007 last week.
The plot where the rust was found July 2 is in Citra, Fla., (Marion County) just south of Gainesville in the center of the state, the state commentary said today. A known positive kudzu site also in the county is within three miles of the plot.
Officials said this sentinel plot was the first one positive in 2005 also (for the state and country). The disease was detected in the MG 3s and 5s at very low severity and incidence (1-5%).
"We are continuing to have local showers and are forecast to continue this typical rain pattern," they said. "Sites that are positive are increasing in severity." They also noted that most commercial soybeans in the state are in the early reproductive stages and susceptible to rust and resulting yield loss if infected.
The Florida rust "hotline" is a nation-wide toll free number, 866-361-9942 and can also be used to get updated information on soybean rust in Florida.
In North Carolina, while no rust has been found, officials don't count it out before the season ends.
In today's state commentary, they says: "If South Georgia and Florida return to a typical summer pattern of frequent afternoon rain showers, we can expect to see some northward movement of rust. Still, with longer day lengths, spore viability is likely to remain low so only local transport in Florida and Georgia are likely until the next tropical system moves northward.
"The season for rust may actually be extended this year if there is more rain south of North Carolina because of extensive late soybean planting in the Delta region. Also, much of the Alabama cotton crop was not planted due to drought, thus they may plant soybean on some of this land."
The national count remains 28 counties and parishes with soybean rust in five states in 2007: FL 10, AL 5, GA 5, LA 5, TX 3.
Source: Florida and North Carolina state commentaries on www.sbrusa.net
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