As with most fungicides, application timing is critical to achieve desired success over disease challenges. White mold control is no different. To quantify the importance of application timing with Incognito on white mold, the University of Illinois completed a study of the product’s active ingredient, thiophanate-methyl, at varying times of treatment on soybeans. Results showed that applications completed during the R1 stage had a 38 percent improvement of disease incidence with a 15 bushel yield improvement at the first check during the season, and 12 percent improvement in disease management and yield with eight bushels added the second year. Applications made after the disease was already present in a field (at the R3 phase) offered no significant disease or yield protection during the trial.   

Feist, along with leading plant pathologists who are experienced with white mold, encourage strategic fungicide use as part of an integrated disease management approach that includes crop rotation, selection of disease-resistant soybean and dry beans varieties, deep-tillage adoption and wide-row spacing at time of planting.

“When it comes to white mold management, selecting a fungicide tool specific to the disease with proper attention placed upon the most advantageous time of application goes a long way in reducing yield losses,” Feist says. “Knowing and responding to the risk placed upon your crop, combined with other good farming practices, will yield the kind of results growers desire while putting more money in their pocket. Plus, new tools like Incognito fungicide are available as a targeted and more exclusive solution in keeping white mold in check.”

For more information about preventative strategies for white mold in soybeans and dry beans, visit