Ahero Irrigation Scheme — Crop & Soil Health Analysis

The problem

Different parts of a large irrigation scheme perform very differently. To guide fertiliser, water and management decisions, the scheme needed a spatial read on where crops and soils are thriving and where they are stressed.

Approach

• Computed a core stack of spectral indices — NDVI, NDMI, SAVI and SOCI — to capture vegetation vigour, moisture and soil organic signals.
• Applied principal component analysis (PCA) separately for crop health and soil health to reduce the many correlated bands into interpretable components.
• Laid the results out as a consistent, comparable series of maps with matching legends and symbology.

Result

A visual diagnostic of variability across the scheme — a foundation for targeted interventions and a repeatable template for seasonal monitoring.