• 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.

To view a report of Adapt-N trials conducted in Iowa and New York from 2011-2014, click here. For data supplement 1, click here. For data supplement 2, click here.

To view a report of Adapt-N trials conducted in New York from 2011-2015, click here. For data supplement, click here.