---
id: soil-science
title: soil science
type: concept
tags: [ecology]
created: 2026-06-22
---

# soil science

## Core idea

Soil Science aims to identify good soil. Good soil has adequete amounts of moisture, air, humus, and minerals to support plants. 

Healthy soil typically consists of 20 percent clay, 40 percent silt, and 40 percent sand. Plant roots absorb/access nutrients best when the pH is in the 5.5 to 7 range. 

- Cut straight into the soil with a shovel or trowel 6 to 8 inches deep, making a V-shaped hole.
- Cut a 1-inch wide slice of soil the length of the hole from one side. Take a 1-inch strip from the center of this slice to use in your sample.
- Repeat sampling randomly around the garden and mix the samples together in a clean glass jar or bucket. 

Water Drainage Test

Composition Test 

PH level

NPK test
[[Nitrogen]]-[[Phosphorous]]-[[Potassium]]

## Links
https://www.almanac.com/content/3-simple-diy-soil-tests

[[soil]]

[Phosphorous]: phosphorous "phosphorous"