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Rooted in nature — problem guide

Soil

Soil is a living resource that changes slowly. These guides focus on sampling well, interpreting results locally, and tracking structure and cover over seasons rather than reacting to a single reading.

Starting points to discuss, not a diagnosis. Confirm causes on your farm with a local adviser before acting.

  1. 1. Uneven growth or nutrient and pH uncertainty
  2. 2. Compaction and restricted roots
  3. 3. Erosion or low soil cover
01

Uneven growth or nutrient and pH uncertainty

What you may notice

Patchy growth, color differences between areas, or no recent soil test to explain results.

Possible causes

Nutrient or pH differences are possible, but drainage, compaction, pests, and seeding problems can look similar.

Hypothesis, not diagnosis: Low-cost 'NPK' probes do not replace lab nutrient analysis; use lab results before changing inputs.

What to do

  1. Take representative samples by management zone and send them to a soil testing lab.
  2. Interpret results for your crop and region using the lab report and local recommendations.
  3. Review results with an agronomist or Extension adviser before adjusting fertilizer, lime, or other inputs.

Local expert note: Input decisions depend on crop, soil, and regional guidance.

Read the explanation

University of Minnesota Extension: Understanding the soil test report (opens in new tab)USDA NRCS: Soil health (opens in new tab)

Technology to explore

Mapping services that combine field scans with lab-analyzed samples can show variation across a field.

See technology options below
02

Compaction and restricted roots

What you may notice

Shallow, flattened, or sideways roots, standing water, or hard layers when digging.

Possible causes

Wet-field traffic, heavy axle loads, and repeated tillage at the same depth are common causes.

Hypothesis, not diagnosis: A hard reading alone does not confirm compaction; check roots and moisture too.

What to do

  1. Dig and compare roots and soil structure in affected and healthy zones.
  2. Compare penetration resistance only when soil moisture is similar, since readings depend on moisture.
  3. Reduce traffic on wet fields and work with a local adviser on a remediation plan suited to your soils.

Read the explanation

USDA NRCS: Soil Compaction: Detection, Prevention, and Alleviation (PDF, June 2003) (opens in new tab)USDA NRCS: Soil health (opens in new tab)

Technology to explore

An agricultural cone penetrometer is a simple tool to compare resistance between zones.

See technology options below
03

Erosion or low soil cover

What you may notice

Rills, gullies, sediment at field edges, crusting, or bare soil for long periods.

Possible causes

Low residue or cover, intensive disturbance, slope, and heavy rain events.

Hypothesis, not diagnosis: Improvement is gradual; avoid expecting results in a single season.

What to do

  1. Walk the field after rain to locate runoff paths and bare areas.
  2. Plan cover crops, residue retention, or reduced disturbance that fits your rotation.
  3. Monitor soil cover and organic matter over several seasons to see trends.

Local expert note: NRCS field offices can help plan conservation practices.

Read the explanation

USDA NRCS: Soil health (opens in new tab)

Technology to explore

Management first: cover and reduced disturbance usually matter more than buying equipment.

See technology options below

Curated external options • Checked September 28, 2026

Technology and products to explore

External product information. Ask the supplier for current pricing and confirm fit for your farm.

Service

SoilOptix mapping service

SoilOptix

Addresses: Nutrient and pH variation across a field

How it helps: Combines field scans with lab-analyzed soil samples to produce high-resolution soil maps for agronomist decisions. It is not instant nutrient sensing or a compaction sensor.

Getting started

  1. Contact a SoilOptix service provider in your region
  2. Schedule scanning and sampling at a suitable time
  3. Review maps with your agronomist before changing inputs

Check before buying

  • Service availability in your area
  • Field size and crop fit
  • Data format for your farm software
  • Ongoing fees, service coverage, and warranty terms
  • Ask supplier for current pricing
Product details / request a quote (opens in new tab)
Tool type

Agricultural cone penetrometer

Various manufacturers

Addresses: Compaction and restricted roots

How it helps: Measures resistance as the cone is pushed into the soil, to compare zones and depths.

Getting started

  1. Choose an agricultural cone penetrometer, not a civil engineering DCP
  2. Take readings when soil moisture is similar across zones
  3. Record depth and location with each reading

Check before buying

  • Cone size and measurement standard
  • Depth range and gauge readability
  • Calibration
  • Ongoing fees, service coverage, and warranty terms
  • Ask supplier for current pricing

Tool type, not a single brand; the link goes to marketplace listings.

Compare listings (opens in new tab)

Find manufacturers on Alibaba

Alibaba lists manufacturers and trading companies. Check the company profile and factory assessment to confirm who makes the product. These marketplace links are separate from the official manufacturer pages above. Confirm seller identity and any claimed brand authorization with the supplier.

Buying note: how to compare suppliers
  • Specifications: confirm model, materials, ratings, and compatibility in writing.
  • MOQ: check the minimum order quantity and sample options.
  • Total landed cost: include shipping, duties, taxes, and customs brokerage.
  • Warranty and local service: ask who handles repairs, spare parts, and support where you farm.

No purchases or supplier messages happen on this site.

Concept demo prepared by Geuzane Castro for Doug’s feedback. No purchases happen on this site.