Corn producers across the Midwest recognize that fungicide applications at VT or later are critical for protecting yield potential against heavy disease pressure like tar spot, gray leaf spot, and southern rust. But what if that same pass could deliver more than just crop protection?
QLF Agronomy’s L-CBF Amino15™ (15N-0P-1K) foliar nitrogen solution combines urea and highly effective L-form amino acids with complex carbon derived from sugarcane molasses. This unique formulation delivers an immediate, plant-ready nutritional package designed for safe, efficient protein production while simultaneously optimizing spray application performance.
Unlike many slow-release foliar nitrogen options, the L-amino acids in Amino15™ are absorbed directly by the leaf and converted into proteins with minimal plant energy or water required. This rapid uptake is particularly valuable during reproductive phases. While approximately 65% of a corn plant’s nitrogen needs are accumulated by the tasseling stage, the remaining 35% is demanded between the VT and R6 growth stages. Leaf absorption during this high-demand window efficiently supplies nitrogen right as the plant shifts its resources toward pollination, kernel set, and grain fill.
Application, pH, and Droplet Advantages
The sugarcane molasses in all QLF L-CBF products acts as a natural humectant, slowing the drying of spray droplets on the leaf surface. This extends the window for nutrient absorption and prevents droplet evaporation during airtime, ensuring maximum plant contact. Furthermore, Amino15™ delivers surfactant-like properties that improve droplet uniformity, maximize coverage, and reduce drift. This makes it an ideal partner for lower-rate aerial applications—whether by airplane, helicopter, or drone—where the straight product handles remarkably well as the sole carrier of the solution with no added water. Amino15™ also provides a naturally low, acidic pH range of approximately 4.5 to 5.5. This acidic environment offers two distinct benefits:
- Preserves Tank Mix Stability: It helps maintain the chemical half-life of many common fungicides, which perform best and degrade more slowly in mildly acidic conditions.
- Enhances Cuticle Penetration: The lower pH aids in breaching the leaf cuticle, improving the overall uptake of both nutrients and crop protection products.
A Season of Resilience: 2025 On-Farm Trials
The 2025 growing season brought exceptionally tough conditions across Central Iowa and the wider Midwest. Southern rust hit early and hard, leaving crops severely stressed. Despite these challenges, two aerial on-farm trials that integrated Amino15™ into growers’ standard fungicide programs demonstrated outstanding resilience and economic return.
Nevada, Iowa (Trial PP-880) (DOWNLOAD FULL TRIAL HERE)
- Application: 3 gal/ac of L-CBF Amino15™ + fungicide applied at the VT stage via drone.
- Results: Delivered +14.6 bu/ac over the grower’s standard program, resulting in a $50.62 net return per acre.
Malcom, Iowa (Trial APP-881) (DOWNLOAD FULL TRIAL HERE)
- Application: 2 gal/ac of L-CBF Amino15™ + fungicide applied via helicopter across multiple fields (149.9 acres treated out of a 303.6-acre trial).
- Results: Produced strong, consistent yield gains across variable terrain, yielding an average $57.60 net return per acre.
These local results directly align with data from the Precision Technology Institute (PTI) Farm in Pontiac, Illinois (Trial APP854). A 3-year study evaluating Amino15™ with fungicide at the VT stage showed remarkable consistency across varying weather conditions, averaging +8.83 bu/ac and a $27.72 return on investment year after year.
Visual Impact and Stay-Green Effect
Beyond the data, the visual differences across the board truly impressed producers. Under heavy southern rust pressure, fields treated with L-CBF Amino15™ stayed noticeably greener and healthier deeper into the season, while untreated or fungicide-only areas turned brown and shut down early. As harvest began, multiple producers called in noting that the QLF-treated areas of their fields were still green and functioning, while the untreated standard checks had already gone dormant and brown. This sustained plant health and extended grain-fill window directly translated into better performance when it mattered most.
Boost Performance with Add-On Micronutrients
To maximize the value of your foliar passes, consider adding QLF’s PowerAid™, a synergistic 7-way micronutrient blend. PowerAid™ features a unique dual chelation utilizing an Amino Acid Complex called PASP (Polyaspartic Acid) alongside traditional EDTA.
This highly available package focuses heavily on delivering plant-ready Boron (derived from boric acid) to:
- Strengthen plant cell walls.
- Accelerate the transport of plant sugars.
- Support robust reproductive development during pollination.
Maximize Every Pass
Incorporating L-CBF Amino15™ and PowerAid™ into your next fungicide application ensures your investment delivers more than just disease control. In a single field pass, you efficiently supply supplemental nitrogen, deliver energy-rich carbon for metabolic support and stress tolerance, and optimize droplet performance for superior canopy coverage. It is a seamless, convenient way to maximize profitability out of a trip across the field.
For best results, always follow label recommendations and conduct on-farm testing. Contact your local QLF Agronomy representative or visit www.qlf.com for more information.