Published September 6, 2025 | Version 1
Dataset Open

Effective soil NPK supply, Kenya

  • 1. ROR icon ISRIC - World Soil Information
  • 1. ROR icon ISRIC - World Soil Information
  • 2. ISRIC World Soil Information

Description

Soil nitrogen (N), phosphorus (P) and potassium (K) supply effectively available for uptake (kg/ha), calculated as a fraction of the measured and mapped contents of N, P and K,  using the formulas proposed by Sattari (Sattari et al. 2014, DOI:10.1016/j.fcr.2013.12.005) and pedotransfer functions (PTFs) from the QUEFTS model (Janssen et al., 1990, https://doi.org/10.1016/0016-7061(90)90021-Z). The NPK input data is derived from Africa SoilGrids [Soil property maps of Africa at 250 m resolution] (https://doi.org/10.1007/s10705-017-9870-x) aggregated for the topsoil at 0-30 cm.  

 

This research was carried out for the LSC-IS hubs project under the funding program Development Smart Innovation through Research in Agriculture (DeSIRA), European Union. EU Contribution Agreement to MinBUZA: FOOD/2020/419-433 ; MinBUZA to WUR Grant number: 4000004100.

 

 

Coordinate Reference System - EPSG:32737

Other

DISCLAIMER:

These soil property maps were generated at a resolution of 100m, with the best available data at the time of production, including global datasets and legacy national level data, using digital soil mapping, GIS modelling and pedo-transfer functions. The derived products are provided 'as-is' without any warranty, regarding accuracy, completeness or fitness for a particular purpose. Users are advised to verify the information independently before making decisions based on it. Additionally, users should assess the local 'predictive' accuracy of the maps prior to using them for making recommendations at local (or field) level.

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Additional details

Funding

European Commission
DeSIRA - LSC-IS 4000004100

Dates

Available
2025-08-09