Usage

Nitrogen Zoning

Segment your fields into 1, 3, or 5 management zones based on within-field variability, enabling variable-rate nitrogen application.

Overview

Nitrogen zoning analyzes satellite imagery to identify areas of varying vigor within a field and segments them into distinct management zones. This supports precision agriculture by allowing you to apply different nitrogen rates to different parts of the field.

Process Nitrogen Zoning

GraphQL Mutation

mutation { processNitrogenZoning( polygonId: "abc123-def456-ghi789" startDate: "2025-06-01" endDate: "2025-08-31" analysisType: "3zones" ) { Status Message Result { requestId } } }

Parameters

polygonId REQUIRED

The polygon to analyze.

startDate REQUIRED

Start of the analysis period (YYYY-MM-DD).

endDate REQUIRED

End of the analysis period (YYYY-MM-DD).

analysisType REQUIRED

Number of zones to segment: "1zone", "3zones", or "5zones".

Retrieve Nitrogen Zoning

GraphQL Query

query { retrieveNitrogenZoning( polygonId: "abc123-def456-ghi789" startDate: "2025-06-01" endDate: "2025-08-31" ) { colorlegend tif png json } }

Zone Types

Type	Description
`1zone`	Uniform field — single zone covering the entire polygon. Useful as a baseline.
`3zones`	Low, medium, and high vigor zones. Good balance of simplicity and precision.
`5zones`	Five-level segmentation from very low to very high vigor. Maximum precision for variable-rate application.

Potato fields: For potato crops, nitrogen zoning uses Leaf Nitrogen data instead of general vegetation indices, providing crop-specific zone boundaries.

Next step: After generating nitrogen zones, use Prescription Files to create machine-readable files (shapefile and ISOXML) for your variable-rate equipment.