- 1970s – early 2000s: field research on space-time aspects of N response
- 1980s – early 2000s: initial software model development
- 2008 – 2013: Adapt-N prototype tool available as free web interface, supported by grant funding
- 2011 – 2017: extensive field testing in the Corn Belt and the Northeast, and model revisions through on-farm trials
- 2013 – 2017: Adapt-N exclusively licensed and commercialized through Agronomic Technology Corporation, an independent agritech company.
- 2017: Norwegian fertilizer company Yara acquired ATC and the Adapt-N products
- field boundaries (can be selected on a map, uploaded via Shapefile, or integrated via API)
- cultivar, maturity class, expected harvest population, planting date
- expected yield, N fertilizer applied (rate, timing, placement and source)
- enhanced efficiency fertilizer used
- soil type
- rooting depth
- field slope
- % SOM
- tillage type
- % residue
- manure applied (rate, when, analysis, method – surface or incorporated)
- forage-sod crops in rotation
- % legume in sod
- method & timing of forage-sod management
- prior crops
To view NutrientStar’s response to the van Es re-analysis, click here.
To view a re-analysis of the 2016-2017 Adapt N data conducted by Harold Van Es, click here.
To view the results for Adapt-N from individual trials conducted by NutrientStar in 2017, click here.
To view a report of Adapt-N trials conducted by NutrientStar in 2016, click here.
To view a description of the 2017 field trial execution methodology for Adapt N, click here.