To create a soil sampling prescription map based on productivity zones:
Go to the 'VRA Maps & trials' tab, click 'Create VRA map', and select the map type as 'Soil sampling'
To build soil sampling prescription maps based on the original productivity zones, switch the 'Match with VRA zones' toggle. The algorithm will consider homogeneous productivity zones and their stability.
These zones will match our VRA input maps, allowing you to create multi-input maps later—for example, a map for fertilizing based on soil sampling and a map for planting based on productivity.
Set the settings for building the prescription map: the number of zones for taking samples or the size of each zone.
By default, we divide the field into zones like this:
If the field's area is less than 10 hectares, each zone is 2 hectares.
If the field's area is between 10 and 30 hectares, each zone is 3 hectares.
If the field's area is between 30 and 50 hectares, each zone is 4 hectares.
For fields with areas larger than 50 hectares, each zone is 5 hectares.
Choose the numbering order for the zones
We recommend using four-digit numbers, where the first two digits represent the field number and the last two digits represent the zone number. This will help you avoid confusion when uploading results for multiple fields.
Use the recommended numbering order if you plan to upload the results of the soil test to OneSoil Yield to visualize them and build VRA maps based on the soil analysis results.
Choose zone complexity
This parameter indicates how much productivity zones affect the soil sample zones.
💡 When choosing the size of zones and their complexity, follow this rule: the preferable homogeneity within a zone is over 85%.
To check homogeneity, set the filling based on this criterion:
If homogeneity is >90%, the zones will be filled with green. This is the desired indicator to aim for.
If homogeneity is between 85% and 90%, the zones will be filled with orange. Try adjusting the size of the zones or their complexity to achieve a value of >90%.
If homogeneity is <85%, the zones will be filled with red. Try adjusting the size of the zones or their complexity to achieve a value of >90%.
Download the file as a map in .shp format or as a PDF report. After that, you're ready to start working!
To create a prescription map with sampling points:
Go to the "VRA Maps & trials" tab, click "Create VRA map," and select the Soil Sampling map type.
Select the number of zones for taking samples, numbering order for zones, and zone complexity.
Enable the option to add sampling points to the map.
Mark the number of points within a zone so we can build the points automatically, or draw the points manually. Then specify buffer zone size (indent from the boundary).
Click the Edit Points button if you need to add or delete previously added points or change their position in the zone.
Export the map in .shp, .pdf, .kml or .gpx.
In future versions of the tool, you'll be able to:
Create VRA maps for fertilizer application based on soil test results.
Conduct experiments based on soil test results.
Analyze the results of VRA fertilization trials based on soil analysis results.
Need to create a map for soil sampling?
We’ve got a great tool for that!