Helping Soybean Farmers Win Against Southern Disease Pressure

Why Southern soybean farmers need disease control and stress protection that hold up under hot, humid conditions.

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Healthy soybean growth
(Photo credit: BASF)

In any given season, Southern soybean farmers will likely face intense disease pressure and environmental stress that can quickly erode yield potential. Warm temperatures and consistent moisture create ideal conditions for aggressive diseases like Cercospora leaf blight, Frogeye leaf spot and Septoria brown spot to take hold.

“Southern soybean farmers face significant disease pressure,” says Kim Tutor, Technical Marketing Manager for Row Crop Fungicides with BASF. “They have to manage through unpredictable weather conditions and growing fungicide resistance.”

With the continued spread of resistance to FRAC Group 11 and FRAC Group 1 fungicides, retailers face a growing challenge: helping farmers protect yield in an increasingly unforgiving disease environment. That’s where Revylok® fungicide comes in.

Powerful Performance Against Disease

Revylok fungicide combines two proven active ingredients, Revysol® (FRAC Group 3) and Xemium® (FRAC Group 7), in a formulation designed for rapid plant uptake paired with powerful residual.

“Revylok fungicide meets a critical need in the South by delivering strong, long-lasting disease control that holds up under hot, humid and unpredictable conditions,” says Tutor. “Its residual strength helps protect yield through the season.”

With activity across a broad spectrum of fungal pathogens, Revylok fungicide delivers consistent control of diseases that have developed resistance to FRAC Group 11 and FRAC Group 1 chemistries. Revylok fungicide provides both preventative and curative activity to help limit disease development and control existing infections.

Lock in ROI

Yield and return on investment drive every fungicide decision. Across multiple years, Revylok fungicide has delivered consistent performance on both fronts.

“Revylok has shown an 8.2 bu/A yield advantage over the untreated check1 and outperformed other fungicide brands by 2.4 bu/A,2” Tutor says.

That performance stems from agronomic strengths that make a difference in Southern production systems:

  • Rapid uptake for fast-acting protection
  • Strong rainfastness for reliable performance under variable rainfall
  • Excellent residual activity during critical reproductive stages
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2024 BASF sponsored replicated field trials Portageville, MO. Application rates were as follows: Revylok Fungicide 5.5 fl oz/A, Miravis Top 13.7 fl oz/a, Lucento 5.5 fl oz/a, Delaro Complete 8 fl oz/a. All treatments applied with NIS 0.25% v/v at R2 – R3 soybean growth stage. R2 soybean growth stage application occurred on July 12th, 2024, and the R3 soybean growth stage application occurred on July 19th, 2023. Cercospora leaf blight (CLB) severity was rated 42 days after treatment at R2 and 35 days after treatment at R3 on August 23rd.
(Photo credit: BASF)

Plant Performance

Disease control is only part of the equation. Revylok fungicide also supports soybean plant performance when applied at R2–R3 soybean growth stages. Applications during this window have been shown to enhance root growth and architecture, improving water access and heat tolerance.

“Stronger root systems help soybeans maintain productivity under environmental stress,” Tutor says. “That’s especially important when heat and moisture variability can challenge yield potential.”

A Reliable Tool for Retailers and Growers

As disease pressure intensifies and resistance continues to spread, dependable fungicide options are essential. Revylok fungicide delivers the disease control, plant performance and yield protection Southern soybean farmers demand — and the confidence retailers need when making recommendations.

Real Results Yield Challenge

The Real Results Yield Challenge helps retailers and farmers evaluate fungicide performance through on-farm, side-by-side comparisons. Farmers apply a BASF performance-driven fungicide, like Revylok fungicide, alongside an untreated or competitive treatment, then share in-season photos and harvest yield data.

“Whether you’ve used BASF products for years or are just considering them, the Real Results Yield Challenge invites growers to put performance to the test on their own acres,” says Tutor.

Talk with your BASF representative to learn how Revylok fungicide can strengthen your soybean disease management programs this season, and to learn more about the Real Results Yield Challenge.

Sources Cited:
1 2022-2024 BASF-sponsored small-plot replicated trials (n=16). Revylok® fungicide (5.5 fl oz/A) applied with 0.25% v/v NIS at the R2.5 - R3 soybean growth stage. Trials conducted in AR, GA, KY, TN, LA, MO, MS, NC, and AL.

2 2020–2023 RevX Fields on-farm demos and BASF-sponsored university and consultant-led small-plot, replicated research trials. Revylok fungicide applied at 5.5 fl oz/A. All other fungicides applied at labeled rates. Applications to R2–R4 soybeans.

Always read and follow label directions. Revylok, Revysol and Xemium are registered trademarks of BASF. All other trademarks are the property of their respective owners and use of any such trademark does not imply any affiliation with or endorsement by its owner. ©2026 BASF Corporation. All Rights Reserved.

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