Soybean rust was detected in Houston, Dale, Autauga, Elmore, Butler, Conecuh, Escambia, Clarke and Marengo counties this week. The disease was found in soybean research plots in Autauga and Elmore counties and on kudzu in the other locations.
Soybean rust has likely spread throughout much of the southern third of the state. The continuous wet weather and relatively moderate temperatures have favored the pathogens development this year, and with the late soybean planting many acres maybe at risk in the state.
Growers should be advised to consider a fungicide application this year, preferably a product with both protectant and curative activity.
Images are of Soybean rust on Kudzu in Butler County.
See the Soybean Fungicide Guide for 2017 that a group of Extension Plant pathologists update each year.
Also the link to the National Soybean Rust website.