Welcome to the 1st version prototype of the online fertilizer decision support tool developed by the SOILS-Consortium (ISRIC, IFDC and USAID) for the Space to Place initiative. This tool generates NPK fertilizer recommendations for major crops for, to be selected, fields in the croplands of target countries in sub-Saharan Africa, at three levels of agricultural management intensity knowing high, medium and low.
This tool is in beta state. It implies that the recommendations should not be used in practice yet.
To access the API, you need to login. Contact ISRIC to request your credentials.
Farms
Fields
| ID | Label | Crop | Management Intensity |
|---|
Create a field by drawing it on the map.
Operations
Import/Export
Results for
| Field | Fetiliser recommendation | Crop | Intensity | Expected yield kg/ha | 10yr deviation kg/ha |
|---|
About this fertilizer decision support tool
Welcome to the 1st version prototype of the online fertilizer decision support tool developed by the SOILS-Consortium (ISRIC, IFDC and USAID) for the Space to Place initiative. This tool generates NPK fertilizer recommendations for major crops for, to be selected, fields in the croplands of target countries in sub-Saharan Africa, at three levels of agricultural management intensity knowing high, medium and low.
The calculations are based on what we call ‘spatial nutrient gap analysis’. Herein we calculate the attainable crop yield as a function of soil water availability and the associated crop nutrient demand as a function of crop parameters derived from fertilizer trial data. This nutrient demand we compare with the soil nutrient supply which we calculate from soil property maps and parameters derived from fertilizer trial data. Then we calculate the efficiency of fertilizer nutrients, again using parameters derived from fertilizer trial data, to fill the nutrient gap. The hyper-localization uses the same model though using additional variables which are not available from maps but observed at the field point location as well as variables which are available from maps but at relatively low certainty and replaced by more certain observations at the field point location.
The model train that we use for this purpose runs online (which may take a moment) following the user-sourced specifications.
Please note that the current prototype is still limited in scope and it is intended to extend this during a follow up phase, including:
- Improvement of the soil-crop model train by inclusion of WOFOST (to estimate water-limited crop production) and INITATOR (to estimate soil and fertilizer (micro)nutrient availability)
- Spatially variable model parameterization (pending additional and adequate trial data)
- Inclusion of national soil map data
- Inclusion of fertilizer source
- Inclusion of multi-year variance in crop response efficiency
- Inclusion of multi-field multi-crop farm optimization
- Inclusion of uncertainty propagation
- Inclusion of soil health
- Further work out of agricultural best practices
Warning
Farm editor
Field editor
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