Make decisions based on what your soil can physically do — not what the average soil test says it should.
The System
Cool Soil IQ™ is our soil intelligence system for precision agriculture. It assigns every zone in every field a score based on what the soil can actually produce — so fertility decisions are built on physical ground truth, not field-wide averages.
The system has two components: ZoneIQ™ works at the field level, scoring each zone based on terrain, soil depth, and limiting layers. FieldIQ™ works at the operation level, comparing every field so you know where to invest and where to pull back.
Two areas of the same field can test nearly identical for phosphorus and potassium — and produce very different yields. Every year, without fail.
Soil tests measure nutrient levels. They don't measure how soil physically performs. Depth to a restrictive layer, drainage class, available water holding capacity, landscape position — these physical properties determine how crops actually access nutrients throughout a season.
That's why some zones consistently underperform even when the test says they shouldn't. And it's why applying the same rate across the whole field guarantees you're wrong somewhere on every acre.
The proof point: We've mapped fields that the county soil survey shows as one series. ZoneIQ™ analysis identified multiple distinct zones with very different yield ceilings — zones that had been managed identically for 20+ years.
ZoneIQ™ measures all of these — and builds your fertility prescription from the ground up.
We start with what the soil physically is before we ever talk about what to put on it. Fertility decisions layered on top of physical soil capability data are fundamentally more accurate than fertility decisions made from test results alone.
Using terrain analysis and LiDAR elevation data, we identify zones based on how water moves across and through your landscape. Dry ridges, transitional slopes, wet receiving areas. These zones are where different soils actually live.
Physical soil borings in each zone confirm what the terrain predicts. We measure and record texture at every horizon, drainage class, depth to water table indicators, and depth to any restrictive layer. Real data, not estimates.
Each zone receives a FieldIQ™ score — a weighted capability index based on total available water holding capacity, drainage, surface texture, subsoil, A horizon quality, slope, and parent material. An objective ceiling for what that ground can produce.
Fertility targets are set by zone profile — not by field average. A shallow restrictive-layer zone needs different P and K targets than a deep well-drained zone, even if they test the same. The prescription matches the physical reality.
A variable rate application (VRT) map your fertilizer dealer can load directly into their spreader. Zone-by-zone rates for P and K. A product order summary with total lbs needed. Ready to act on immediately.
Zone soil tests retaken on a zone-specific schedule. Prescriptions updated as tests come in. Fertility targets refined as yield data accumulates. Each year's data makes next year's decisions sharper.
ZoneIQ™ is our zone mapping and verification system. It delineates management zones based on physical terrain characteristics and verifies them with actual soil borings. Every boring data point feeds a capability calculation unique to that zone.
FieldIQ™ is the capability score that comes out of that process. It expresses each zone's productive potential relative to a baseline — the kind of deep, well-drained, Wisconsin-glacial-till silt loam that east-central Indiana does well. A FieldIQ™ of 100 is that baseline. A score of 85 means that zone produces about 85% of baseline potential. A score of 115 means it can do better.
Why this matters for fertility: A zone at FieldIQ™ 85 with a shallow restrictive layer needs more surface P — all the P has to come from the sampled zone. A zone at FieldIQ™ 115 with deep roots can access nutrients from a much larger soil volume. Same field. Same soil test. Different prescription. That's the difference.
Scores calibrated to east-central Indiana Wisconsinan glacial till soils. Yield potential ceiling — not a guarantee.
Every retail ag recommendation carries an implicit incentive. When your advisor also sells the product, the prescription is never fully independent. Cool Soil Consulting has no product line, no supplier relationship, and no commission structure. Our revenue comes entirely from consulting fees.
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