Soil Testing Guide
What Is Soil Health? A Complete Guide
Soil health is the foundation of every successful harvest. Here's what it means, how to measure it, and how to improve it — season after season.
Last updated: 20 July 2026 · By the MatoSense Team
What Is Soil Health?
Soil health is the ongoing capacity of soil to function as a living system — supporting plant growth, cycling nutrients, holding water, and sustaining productivity season after season. It's a broader idea than simple "soil fertility," because it accounts for the soil's physical, chemical and biological condition together, not just whether it has enough nutrients right now.
In practice, soil health is measured through a handful of key indicators: soil pH, NPK nutrient levels (nitrogen, phosphorus, potassium), soil moisture, soil temperature, and electrical conductivity (EC), which reflects salinity. Track these consistently and you get a reliable, real-world picture of how your soil is doing.
Why Soil Health Matters
Healthy soil grows more with less. Farms with well-managed soil health typically use less fertilizer and water to reach the same or better yields, because nutrients and moisture aren't being wasted on soil conditions the crop can't actually use. Poor soil health — acidic or alkaline pH, nutrient imbalance, compacted or waterlogged ground — silently caps your yield no matter how much you spend on inputs.
Soil health also compounds. A field that's monitored and managed well stays productive for decades; one that's over-fertilized or left unchecked degrades, sometimes permanently. Testing regularly is the cheapest insurance policy a farm can buy.
The 5 Key Indicators of Soil Health
- Soil pH — controls how available nutrients are to your crop, regardless of how much fertilizer you apply. See our complete guide to soil pH testing.
- NPK nutrients — nitrogen, phosphorus and potassium drive leaf growth, root development and overall plant resilience. See our NPK soil testing guide.
- Soil moisture — too little stresses the crop, too much starves roots of oxygen and invites disease.
- Soil temperature — governs germination speed, root activity and nutrient uptake rates.
- Electrical conductivity (EC) — a proxy for salinity; high EC can damage roots and reduce water uptake even when moisture looks adequate.
Every one of these can be measured directly in the field with a multi-parameter soil sensor, instead of relying on guesswork or waiting on a lab.
How to Measure Soil Health
There are two broad approaches. Laboratory testing sends a physical soil sample off-site for chemical analysis — it's the gold standard for certified accuracy but takes days to weeks and isn't practical for frequent monitoring. Sensor-based testing uses a probe inserted directly into the soil to give an instant, in-field reading of pH, NPK, moisture, temperature and EC.
Sensor readings are a close, instant approximation using well-known, globally trusted measurement techniques — not a certified lab value. For most day-to-day farm decisions this is more than enough; for regulatory, research or certification needs, pair sensor monitoring with periodic lab testing.
The MatoSense Soil Sensor Platform measures all five indicators in one probe, prints an instant report via a connected thermal printer, and syncs every reading to a free online dashboard — so your soil health data builds into a real history you can act on, not a one-off snapshot.
How to Improve Soil Health: 6 Practical Steps
- Test regularly. You can't manage what you don't measure — check pH, NPK, moisture, temperature and EC at least every season.
- Balance your pH first. Nutrients become locked out of reach in soil that's too acidic or too alkaline, so fix pH before adding more fertilizer.
- Fertilize to your actual NPK numbers, not a guess — over-fertilizing wastes money and can damage soil and waterways.
- Manage moisture deliberately. Irrigate based on real soil moisture readings rather than a fixed schedule.
- Add organic matter — compost and crop residue improve structure, water retention and biological activity over time.
- Rotate crops and avoid compaction to keep soil structure and biology healthy across seasons.
Soil Health Monitoring With MatoSense
MatoSense was built specifically to make soil health monitoring practical for farmers, cooperatives, researchers and government agencies — not just labs. The device ships worldwide, the web platform at soil.matosense.com is free forever, and every reading is stored so you can track soil health trends across seasons, not just single readings. See the full sensor specs or get in touch to bring soil health monitoring to your fields.
Frequently Asked Questions
What is considered good soil health?
Healthy soil typically has a balanced pH (around 6.0–7.5 for most crops), adequate levels of nitrogen, phosphorus and potassium, good moisture retention without waterlogging, active organic matter, and stable temperature. No single number defines "good" soil health — it is the balance of these indicators together, tracked over time.
How often should I test soil health?
For active farmland, test at least once per season — ideally before planting and again mid-season. A continuous sensor like MatoSense removes the guesswork by giving you live pH, NPK, moisture, temperature and EC readings whenever you need them, instead of waiting weeks for lab results.
Can I improve soil health without lab tests?
Yes. A field sensor gives you an instant, in-field approximation of your key soil health indicators, which is enough to guide day-to-day decisions like irrigation timing and fertilizer amount. Lab tests are still worth doing periodically for certified, high-accuracy results — especially for major decisions like liming a field.
What is the fastest way to check soil health in the field?
A multi-parameter soil sensor is the fastest option: insert the probe and get pH, NPK, moisture, temperature and electrical conductivity readings within seconds, with no lab turnaround time. Devices like the MatoSense platform can also print an instant report on the spot via a connected thermal printer.
