Does the strip detect soybean rust following fungicide application?
The strip will not distinguish between “old” lesions and “new” ones. Both dead and live mycelia may be detected following a chemical treatment. When scouting for rust some number of days following an application, it is important to observe new, unprotected leaf tissue that may present symptoms. The presence or absence of old or new lesions will be influenced by type of fungicide used and the method of application, as well as weather conditions. Across all possible scenarios, the strip test should complement other rust-management approaches and the advice of a crop-management specialist.
