So that Adapt-N can account for Nitrogen already added to a field (and how much of that N was taken up by the crop vs. lost), it's important to accurately enter each N application into the system.
In addition to entering the information while configuring individual fields, nitrogen applications can be entered across multiple fields by clicking the "Applications" icon from the left navigation bar, or selecting "Nitrogen" using a zone's view menu option.
Enter each Nitrogen application, specifying:
- The type of application (Pre-plant, Starter, Pre-Emergence, or Sidedress)
- The date of the application (if Starter, date is not required as the planting date is automatically used)
- The type of fertilizer
- The amount applied and the units for that application (users have the ability to select lbs-N/ac OR gal product/ac if it's a liquid product and lb product/ac if it's a dry product; Adapt-N will convert units of product to units of N, and vice versa, automatically)
- The placement of the application (surface through 10" depth)
- Enhanced Efficiency Products (EEP) used, if any
Adapt-N accepts 1 Nitrogen Application of the type "Starter", to represent N applied at planting. If you have applied more than one type of Nitrogen at planting, you can represent the additional starter applications by adding them as Pre-Emergence applications, specifying the planting date as the Application Date. Adapt-N will treat this in the same way as Starter.
Enhanced Efficiency Products (Stabilizers)
Enhanced Efficiency Products (EEP) options include urease inhibitors, nitrification inhibitors, combined inhibitors, and poly-coated urea. Impacts on N recommendations depend on the effectiveness of the materials, seasonal conditions, management practices, and soil characteristics (esp. organic matter content).
Adapt-N currently incorporates the specifics of the following active ingredients/trade names into its nitrogen recommendations:
|Active Ingredient||Trade Name|
|Nitrapyrin||N-Serve / Instinct|
|Ammonium/calcium thiosulfates||Thio-Sul / CAT|
|NBPT+DCD impregnated Urea||SuperU|
Adapt-N's inclusion of, exclusion of, or reference to any trade name is not an endorsement of that product or its manufacturer. Our modeling of these products is based on research associated with the active ingredients in these products.
Additional notes on utilizing EEPs within Adapt-N:
- The use of an EEP must be associated with an appropriate Fertilizer Type in the course of entering a fertilizer application into Adapt-N.
- When using ESN or SuperU, also select Urea as the Fertilizer Type, as it includes both the fertilizer and control mechanism.
- Adapt-N is not calibrated for the use of EEPs in conjunction with high rates of manure application at this time. Users are advised against modeling manure applications with EEPs, the effectiveness of this practice is not well understood.
Nitrogen applications can also be submitted by uploading a shapefile. With a shapefile upload, users will have to also select which shapefile field correctly corresponds to the units that was selected previously (lbs or gal of product or lbs of N).
Adapt N will then convert lbs or gallons of product to lbs of N (and vice versa) automatically as shown below.
To modify existing Nitrogen applications or view them on the map, click View Past Applications
You can then click Remove, Edit, or View on Map
Applying an Adapt-N Rec Export to a Field
Once an Adapt-N recommendation has been exported as a Shapefile* via the Field Recommendation Export page, a new option becomes available on the Field Configuration screen's Nitrogen Applications layer: "Apply Adapt-N export"
"Apply an Adapt-N export" enables the selection of any past Shapefile* export from this field to be used as a new Nitrogen Application on the field. Fill out the form for application date, type, placement, and Enhanced Efficiency Product, then click to select the desired Adapt-N export file.
If multiple exports exist for the field, preview the information about each selected recommendation to choose the desired export.
The system will automatically perform the necessary product rate conversions and apply the exported recommendation back to the field at the appropriate applications rates across the field. If a custom fertilizer was used during the export, you may be prompted to select the most similar standard fertilizer type during the import. This selection is only necessary for loss and uptake modeling purposes, not for product rate conversion purposes (even with custom fertilizers, the actual N-P-K makeup of the product is appropriately converted to pounds of nitrogen).
A common use for this feature is as follows:
- configure a field in Adapt-N and use it to generate an early sidedress recommendation
- apply that sidedress recommendation in the field
- use this feature to apply that recommendation to the field in Adapt-N on the date it was actually applied in the field
- Adapt-N continues monitoring the field on a daily basis; use N-Alerts or the Dashboards to see if additional N applications may be needed later in the season
* = any export that results in a shapefile being produced is available for use via this feature. This includes Adapt-N's standard shapefile export as well as exports to John Deere Operations Center.