SOUTH CAROLINA SOYBEAN RUST NEWS NOTE
28 August 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 BEEN DETECTED IN SOUTH CAROLINA.
During the week of August 23rd – August 27th samples were examined from Allendale, Bamberg, Barnwell, Dorchester and Orangeburg Counties. Growth stages of the soybeans sampled ranged from R5 to R5.5.
On August 26th, Asian Soybean Rust (ASR) was identified on soybean in Bamberg County, by Clemson Extension Agent Joe Varn. The soybeans in this field are in the mid R5 growth stage. The severity of ASR is low in this field at this time.
At this time if a soybean producer has good yield potential soybeans that have not been treated with a fungicide in the last 14 days and they have not reached the late R5 growth stage a fungicide application would be appropriate to consider.
For specific fungicide recommendations, please consult the Clemson Pest Management Handbook https://www.clemson.edu/extension/agronomy/pestmanagement21/2021pmhsoybeandiseasecontrol.pdf or call your local Clemson Extension Agent.