# University trials find ONE SMART SPRAY cuts herbicide costs in corn and soybean when paired with residual herbicides

Canonical page: https://technooptimist.io/stories/university-trials-find-one-smart-spray-cuts-herbicide-costs-in-corn-and-853bd11b
Date: 16 Sep 2025
About: [ONE SMART SPRAY](https://technooptimist.io/companies/one-smart-spray.md) · [ONE SMART SPRAY system](https://technooptimist.io/agriculture/smart-spraying-system.md)
Original source: https://www.cambridge.org/core/journals/weed-science/article/evaluating-one-smart-spray-for-weed-control-in-midwestern-us-corn-and-soybean-crops/C0B0D75739107BFA439FB15465C69A27

Researchers led by Kansas State University tested the system in Kansas and Illinois in 2022–2023. Programs combining a broadcast soil-residual herbicide with spot-sprayed foliar herbicide gave weed control similar to full broadcast, while spot-spraying alone was consistently the weediest.

## Key facts

- Average savings in Kansas 2023: about US$123/ha in soybean and US$43/ha in corn
- Illinois corn: broadcast ~US$188/ha vs ~US$128–158/ha with the system's settings
- Authors recommend the most sensitive 'Efficacy' setting for in-crop spraying
- Costs exclude sprayer running and subscription fees

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