SOUTH CAROLINA SOYBEAN RUST NEWS NOTE
26 July 2021
FROM: Jonathan Croft, Clemson Extension Agronomic Agent, Joe Varn, Clemson Extension
Agronomic Agent, and Dr. John Mueller, Extension Soybean Pathologist, Edisto Research
and Education Center.
SOYBEAN RUST HAS NOT BEEN DETECTED IN SOUTH CAROLINA AS OF 25 JULY 2021.
During the week of July 19th – July 25th samples were examined from Bamberg,
Barnwell, Colleton, Dorchester, Hampton, and Orangeburg Counties.
On July 19th, Asian Soybean Rust (ASR) was identified on soybean in Toombs County, Ga. The
soybeans that ASR is reported in are in the R6 growth stage. This is the closest find of ASR on
soybean to SC currently. Toombs County, Ga, is approximately 100 miles from the South
Carolina border.
The referenced location of ASR can be found on the reporting map at
https://www.eddmaps.org/distribution/uscounty.cfm?sub=9298.
We are currently not recommending any foliar fungicide applications for the control of
ASR. If we identify ASR in soybean, we will consider the recommendation of a foliar
fungicide for control, based on the timing of the infection, weather conditions, and crop
potential.
