BASF Zorina fungicide has received U.S. Environmental Protection Agency (EPA) registration and is approved for 2026 use in soybeans, canola and dry beans, subject to state approvals.
For soybeans, Zorina is designed to provide specialized white mold control as well as foliar control of other key diseases, including frogeye leaf spot and septoria brown spot.
White mold (Sclerotinia sclerotiorum) is consistently one of the most yield-limiting diseases across the Midwest and Northern Plains.
Yield losses can reach 80% in soybeans under severe disease pressure, according to Albre Brown, BASF technical marketing manager. She says U.S. soybean farmers experienced an estimated loss of more than 26.1 million bushels due to white mold in 2024 alone.
A Power-Packed Combination
Zorina fungicide combines the proven white mold performance of Endura fungicide with the long-lasting, broad-spectrum disease control of Revysol fungicide.
The active ingredient in Revysol is mefentrifluconazole, a triazole that’s classified as a Group 3 product. Endura contains the active ingredient boscalid and is classified as a carboxamide, a Group 7 product.
In combination, the two active ingredients are able to provide preventive and curative disease benefits in approved broadleaf row crops.
Application Timing Is Critical For Optimum Results
As pressure from white mold continues to rise in crops like soybeans, settling for disease suppression is not enough according to Brown. She says farmers must be proactive in preventing it from taking hold in their crops in the first place.
“A white mold fungicide application has to be timed appropriately, because the pathogen enters into the plant through the blooms,” she explains.
For optimal white mold control, Brown says to apply Zorina fungicide preventively at full bloom when soybean, dry bean and canola crops are most susceptible to infection by Sclerotinia ascospores: R2 growth stage in soybean and dry bean, and 30% to 50% bloom in canola.
The R2 application timing is earlier than what many soybean farmers are accustomed to targeting.
“Our traditional fungicide application timing for foliar diseases is at the R3 soybean growth stage, but that is after the pathogen entry time,” Brown says. “For white mold, you actually have to shift your application timing back to R2 to get that treated and targeted effect.”
She adds that a key benefit of using Zorina fungicide is farmers won’t need to make two foliar applications to address disease pressure.
“We formulated Zorina to have long-lasting residual activity. You’ll get the extended benefit of the residual activity that will carry through to control diseases like frogeye leaf spot and septoria brown spot,” Brown says.
She adds that some Midwest farmers have asked about going with a two-pass fungicide program, with the second one used as a plant health application. In that scenario for soybeans, Brown says farmers can apply Zorina at R2 and then come back between R4 and R6 with a product such as Veltyma fungicide.
“By R4 the plant is starting to be more robust, and it’ll be shifting into putting on biomass. That’s when we want to see that plant health application made to positively support growth and development,” Brown explains.
To learn more about Zorina fungicide, contact your local BASF representative or visit agriculture.basf.us.
Your next read: 8 Expert Tips for Choosing the Best Seed Corn for 2026
