Soybean rust has been confirmed in seven Arkansas counties: Arkansas, Chicot, Drew, Desha, Jefferson, Lincoln, and Prairie. Six of the seven counties were confirmed this week (9/17) and it is extremely likely that within the next few days/weeks more counties will be added to this list. Disease incidence this week ranged from 6 to 30% on R5+ to R7 soybeans. Though some of these soybeans are past the recommended growth stage of treatment (R6) abundant spores are being produced that threaten late planted soybeans. See previous reports on this blog for management of younger soybeans that are within or near counties where SBR has been confirmed. Future updates will be posted on this blog and IPM-PIPE.
View this week’s earlier post with detailed photos
Figure 1. Distribution of Soybean rust in Arkansas and neighboring states – 9/21/12.
