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Ag Geek Speak · September 23 · 8 min

6.5 Soil Sample the Extremes

We dig into why skipping the lowest-yielding parts of a field can be the most expensive soil sampling decision you make. We lay out a simple “sample the extremes” plan that improves variable-rate fertilizer accuracy and helps put nutrients where they actually belong. In this episode we discuss... • reframing soil testing as nutrient placement, not just cost-cutting • why red zones like hilltops, saline spots, and drown-outs often need sampling most • how built-up phosphorus and potassium can hide in low-productivity areas • using variable rate yield goals alongside soil test results for tighter fertilizer decisions • choosing which management zones to sample and when to interpolate the rest • splitting low zones into separate mods and sampling both when causes differ • using ADMS to bring results back into zones and make educated interpolations Tune in next time for a tiny bite of knowledge from GK Technology, where we have a map and an app for that. https://gktechinc.com/

0:00 · Tiny Bite Kickoff-8:10

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show notes

We dig into why skipping the lowest-yielding parts of a field can be the most expensive soil sampling decision you make. We lay out a simple “sample the extremes” plan that improves variable-rate fertilizer accuracy and helps put nutrients where they actually belong. 

In this episode we discuss...
• reframing soil testing as nutrient placement, not just cost-cutting 
• why red zones like hilltops, saline spots, and drown-outs often need sampling most 
• how built-up phosphorus and potassium can hide in low-productivity areas 
• using variable rate yield goals alongside soil test results for tighter fertilizer decisions 
• choosing which management zones to sample and when to interpolate the rest 
• splitting low zones into separate mods and sampling both when causes differ 
• using ADMS to bring results back into zones and make educated interpolations 

Tune in next time for a tiny bite of knowledge from GK Technology, where we have a map and an app for that. 


https://gktechinc.com/

chapters

7 chapters