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What do soil test results look for?

Author

Charlotte Adams

Published Mar 10, 2026

What do soil test results look for?

The report is complete, showing organic matter, pH, cation exchange capacity, base saturation and nutrient levels — including micronutrients. The first section of the soil test to review is the pH, cation exchange capacity (CEC) and percent-base-saturation section. Soil pH has a direct effect on nutrient availability.

Also asked, what do my soil test results mean?

Keep in mind that a soil test is a chemical way of estimating the nutrients available to the plant. The pH is a measure of soil acidity. Generally 6.6 or lower indicates acidic soil, 6.7 to 7.3 means neutral soil, and a reading higher than 7.3 means the soil is basic.

Subsequently, question is, what do soil samples test for? Available nutrient levels in the soil determine how good crop growth will be. Testing for phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) helps determine the need for soil amendments (phos- phate, and lime or dolomite) and the right fertilizer formulations for the crop to be grown.

Beside above, what are three items found on a soil test report?

The Field Test on the Biosolids form includes organic matter content, extractable calcium, manesium, potassium, and phosphorus, along iwth the pH and Mehlich lime buffer pH. Results include calculated Cation Exchange Capacity (CEC), base saturation, and phsophorus saturation.

How do you read a soil test report?

INTERPRETING THE NUMBERS ON YOUR SOIL TEST REPORT

Soils usually contain much higher amounts of nutrients than what you see in the soil test report, because lab results describe only the available nutrients to plant.

What is a good CEC for soil?

Generally, the CEC is lowest at soil pHs of 3.5 to 4.0 and increases as the pH is increased by liming an acid soil, as shown in Figure 2. Because CEC may vary considerably with soil pH, it is a common practice to measure a soil's CEC at a pH of 7.0.

How accurate are home soil test kits?

Nevertheless, commercially available kits such as Rapitest and La Motte Soil Test Kit were 92% and 94% accurate, respectively, for the soils tested and are a fast and economic means by which farmers, home gardeners, and agricultural service personnel can improve nutrient management for crop production and environmental

What is a Mehlich III soil test?

The Mehlich 3 method is a weak acid soil extraction procedure that has the advantage of being applicable for a number of elements. The extract is composed of 0.2 M glacial acetic acid, 0.25 M ammonium nitrate, 0.015 M ammonium fluoride, 0.013 M nitric acid, and 0.001 M ethylene diamine tetraacetic acid (EDTA).

What is normal soil?

Most soils have pH values between 3.5 and 10. In higher rainfall areas the natural pH of soils typically ranges from 5 to 7, while in drier areas the range is 6.5 to 9. Soils can be classified according to their pH value: 6.5 to 7.5—neutral.

How long does it take to get your soil results?

How long does a soil test take? Many soil testing labs will mail your results in two weeks. During the spring, when the labs are the busiest, it may take longer.

Why should a homeowner perform soil testing?

Soil testing for new homes is needed in order to determine the composition of the soil and if it can properly support a foundation. If extra foundation supports are not used, the expansion and contraction of the soil due to moisture content can result in cracked and crumbling foundations.

How long does it take to get soil test results?

Complete nutrient tests take about 1 - 2 weeks. Results are mailed from the lab directly to you, and a copy also is sent to our office.

How do you analyze a soil sample?

How to Test Your Soil
  1. Thoroughly clean the tools you're using to collect the soil sample.
  2. In the planting area, dig five holes 6 to 8 inches deep.
  3. Take a 1/2-inch slice along the side of a hole and place it in the bucket.
  4. Collect samples from different areas that'll be growing similar plants.
  5. Mix the soil in the bucket.

How deep should soil samples be taken?

The recommended sampling depth for gardens is 6 inches. This is the normal spading depth of most garden soils. Take soil samples to a depth of 4 inches. This is the actual soil depth and should not include roots or other accumulated organic material on the surface.

What does P mean in a soil test?

The “P” Classification acts as a “warning bell” to the footing/slab. designer that particular site feature/s need to be considered when designing the. footings. These features may cause abnormal conditions in the underlying soils that. will adversely effect the expected amount of soil movement that would occur under.

What does ppm in soil mean?

Parts per Million

What are the methods of soil testing?

Our Soil Testing Methods

atomic absorption spectrophotometers; Inductively Coupled Plasma Spectrometers (ICPs); Lachat Flow Injection Analyzer; colorimeters; and.

Which soil sample has the darkest color?

Answer: Dark brown or black color in soil indicates that the soil has a high organic matter content. Soils with the finest texture are called clay soils. The particles that make up soil are categorized into three groups by size – sand, silt, and clay.

What are the 5 characteristics of soil?

All soils contain mineral particles, organic matter, water and air. The combinations of these determine the soil's properties – its texture, structure, porosity, chemistry and colour.

How can I test the pH of my soil at home?

The Pantry pH Test for Soil Acidity or Alkalinity
  1. Place 2 tablespoons of soil in a bowl and add ½ cup vinegar. If the mixture fizzes, you have alkaline soil.
  2. Place 2 tablespoons of soil in a bowl and moisten it with distilled water. Add ½ cup baking soda. If the mixture fizzes, you have acidic soil.

What are the tools needed in soil sampling?

Push probes, hammer probes, and bucket augers (Figure 1) are commonly used because they are capable of taking uniform samples with depth. Figure 1. Examples of soil sampling equipment: a soil push probe, hammer probe, and bucket auger. Along with a probe, a clean plastic bucket should be used.

How do you test for soil toxicity?

Here's How To Test Your Soil
  1. Using a spade or trowel, take small samples of soil from three to ten random spots in your garden.
  2. Thoroughly mix the soil in the container, taking care to remove any pebbles, leaves, or roots you might find.
  3. Mail the bag to your preferred testing site.

Where do you sample soil?

You can use a soil probe to obtain soil from multiple locations around the landscape bed or garden. Take samples to a depth of 6-8 inches. You should collect separate samples for soil tests from different sections within your yard, landscape, or garden. Each section should be distinct from the others.

How do you test the pH of soil?

Testing pH Using Soil Strips
  1. Dig for a Sample.
  2. Place 1 to 3 Teaspoons of Soil in a Clean Glass.
  3. Pour in Distilled Water.
  4. Agitate the Soil Vigorously by Stirring or Swirling.
  5. Pour Soil Sample Through a Coffee Filter and Into Another Clean Glass.
  6. Dip the pH Test Strip into the Liquid.
  7. Repeat the Process.

What is the cost of soil test?

Environmental and soil contamination testing costs $15 to $400 per each individual test.

Soil Composition and Contamination Testing Prices.

Test TypeAverage Range (depending on specific test)
Garden and Potting$10 - $75
General Health$50 - $100

How frequent should you subject your soil for analysis?

A soil sample should be taken at least once every three years, or when there is a change in crop to be grown. A soil sample should also be taken if problems occur during the growing season.

What is a soil test called?

Compaction tests of soil are typically conducted during cosntruction on site, and based on predetermined lab test called a Proctor. This lab analysis tests a soil sample from the site to identify the maximum achievable density, and how the soil reacts to varying conditions, such as moisture.

How do you write a soil report?

The main figures should include:
  1. Topographic site plan, usually with a vicinity map.
  2. Boring location map.
  3. Geologic mapping.
  4. Supporting photographs of site conditions.
  5. Geologic cross-sections and typical sections along the alignment, if approved by the Principal Geotechnical Engineer.
  6. Recommended design details.

How do you understand soil?

What makes soil, soil?
  1. Texture - The particles that make up soil are categorized into three groups by size: sand, silt, and clay.
  2. Structure - Soil structure is the arrangement of soil particles into small clumps, called "peds".
  3. Color - Color can tell us about the soil's mineral content.

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