Scattered soil measurements being interpolated into management zones for targeted variable-rate fertilizer application

Operational Workflow

Variable-Rate Fertilizer Analytics

Context

Problem & Responsibility

Operational Problem

Manual interpolation and prescription preparation could consume half a day or a full working day.

My Responsibility

Automated soil-data analysis, spatial interpolation, prescription generation and operational export.

System Design

Architecture & Workflow

  1. 01

    Soil-data validation and analysis

  2. 02

    Spatial interpolation

  3. 03

    Prescription generation

  4. 04

    Operational export workflows

  5. 05

    Current-year soil tests compared with the nutrient requirements for a target yield to estimate the phosphorus and potassium gap by zone

  6. 06

    Regression of fertility against historical yield, validated on trial plots and prior-year performance

Deep Dive

Inside the Build

Approach

Automated soil-data analysis, spatial interpolation, prescription generation and operational export. Developed in-house Python/geospatial workflows combining soil-test data, historical yield performance and management-zone context to estimate the nutrient gap against a target-yield goal, using linear-regression-based analysis of fertility against historical yield, validated on trial plots and prior-year performance.

  1. 01

    Moved critical calculation logic out of difficult-to-customize desktop software into a controlled, repeatable internal workflow.

  2. 02

    Estimated zone-specific nutrient needs rather than applying a uniform rate across a field.

  3. 03

    Generated spatial outputs suitable for use by field equipment.

  4. 04

    Made complex recommendation processing accessible to analysts without manually repeating every GIS step.

  5. 05

    Current working scale is approximately 200,000 acres.

Evidence

Scale & Measurable Impact

  • Reduced processing to approximately 15–30 minutes
  • Estimated savings of roughly $2–$5 per acre, approximately $250,000 in total for 2020
  • Applied to approximately 85,000 acres in 2020

Technologies

  • Python
  • GIS
  • IDW
  • Kriging
  • Spatial analysis
  • Prescription exports

Let’s Connect Spatial Data to Real Decisions.

Open to conversations about geospatial engineering, cloud data platforms, GeoAI and spatial analytics.