Yield Response Modelling

Input template. Start with the GXLab soil test import template: download the CSV template. Keep the first row as column headers, the second row as units, then add one sample per row. The key fields are Sample ID, Latitude and Longitude. Soil test results should be numeric columns, for example pH, nitrate nitrogen, phosphorus, potassium, magnesium, sulphur, organic carbon or other lab results you want tested against yield.

Yield layer. Upload a yield map or productivity layer covering the same paddock or field as the soil samples. The layer should be georeferenced, use real-world coordinates, and overlap the sample points. A GXLab layer export ZIP is preferred. A GeoTIFF also works. Values should represent yield directly, such as tonnes per hectare, or a relative productivity index such as NDVI. If using NDVI or another index, tick the conversion option below and enter the low and high yield values.

Disclaimer. This tool is a decision-support tool only. Results depend on the quality, density and alignment of the soil test data and yield layer. The limiting factors, target distances and management notes should be reviewed by a qualified agronomist or advisor before fertiliser, lime, gypsum or other treatments are applied. Do not use the output as a standalone prescription map. Check product rates, crop requirements, soil constraints, local regulations and safety directions before making field applications.