Soil Mapping for Smart Fertilizer Blending

Soil fertility mapping for targeted fertiliser blending in Africa

Using cutting-edge geo-statistics, Cropnuts has developed soil fertility maps for several African countries. We make these maps by collecting soil samples from hundreds of pre-determined sites and then analysing them in our laboratory. From this analysis, we can create advanced soil maps of the key growing regions in multiple different countries.

These soil maps have been used by fertiliser blending companies and research institutions to develop specialist fertiliser blends for specific crops in different agro-ecological zones – a process that we call Smart Blending.

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Working with the latest technology and international expertise, we have worked are able to provide support commercial companies looking to use digital soil maps to develop smart blending services.

Our soil maps can be used for a wide variety of different purposes. These include:

  • Developing variable rate fertilizer recommendations
  • Producing baseline soil fertility maps at farm and field scale, and analysing how they change over time due to management interventions
  • Developing regional soil maps
  • Generating fertilizer recommendations for specific crops at multiple different scales

The Cropnuts soil fertility maps can be used to generate reliable predictions of multiple different soil properties at regional and national scales. Working with multiple fertilizer companies and blenders, Cropnuts have used this information to support the development of fertilizer products that are regionally and crop specific, giving farmers access to fertiliser blends that are tailored to their local soil types.

These maps can also be used by regional and national governments to develop locally specific policies for soil health and fertiliser use. This is an important step away from the blanket fertiliser recommendations, which can lead to leaching and environmental contamination.

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