Soil Fertility


Check Below for Garden Soil Analysis information!


“Your crop is, as your soil is”,

Dr. Robert Stevens, WSU, Soil Scientist. Soil fertility is that important!

Analysis and observations to assist the management of soil resources is critical to successful farming. Soil fertility management, the integration of soil physics (water holding capacity), chemistry and biology is the foundation to smart farming. Optimizing soil nutrients, soil moisture levels and conditions for beneficial microbiological activity is technical business. We can help take the mystery out of soil fertility analysis and put you back in charge of your fertilizer programs.  We also provided an analytical package for WSDA organic crop production compliance.

pdf buttonSoil Brochurefield_of_soil

pdf buttonOrder Form

pdf buttonSampling Instruction

WSU Soil and Nutrition Webpage

OSU Soil Test Interpretation Guide

pdf buttonGarden Facts & Figures

Other Helpful Resources

pdf buttonComposting Guidelines

pdf buttonCompost & Nitrogen Content Discussion

pdf buttonNitrogen 101 - The Basics

pdf buttonBasic Soil Chemistry - Pt 1 (CEC, K, P, B)

pdf buttonBasic Soil Chemistry - Pt 2 (pH, humus, nitrification)

pdf buttonSome Thoughts on Boron

Chelan/Douglas County Master Gardeners

WSU Extension Master Gardener

Monitoring Soil Nutrients Using a Management Unit Approach

PAP-Accreditied-Stamp no date


NAPT Program

The North American Proficiency Testing (NAPT) Program (a program of the Soil Science Society of America) assists soil, plant and water testing laboratories in their performance through inter-laboratory sample exchanges and a statistical evaluation of the analytical data.

The program guidelines have been developed for the agricultural laboratory industry by representatives from groups familiar with and involved in standardizing methods and developing nutrient recommendations for soil and plant analysis methods within the U.S. and Canada. It is operated as an activity of the Soil Science Society of America and overseen by an oversight committee comprised of representatives of the above-mentioned groups. These include: Regional Soil and Plant Analysis Workgroups; Scientific Organizations; State/Provincial Departments of Agriculture; and private and public and plant analysis labs.

Click Here for information about our NAPT-PAP accreditation!!!

Soil Science Society of America


Garden Soil Analysis

Learn about the strengths and weaknesses of your garden soil. We'll help you understand the current nutrient composition of your soil and provide you with the recommendations you need to optimize its fertility. Select the 'Garden Package' from the soil order form.


Garden Analysis Brochure

Helpful Gardening Facts & How To Use Data & Lab Recommendations

Order Form

Dept. of Ecology's Dirt Alert Program

DOE Gardening on Lead and Arsenic Contaminated Soils Page

WSU TFREC Soil & Nutrition Page

OSU Heavy Metals in Garden Soil Page

WSU Gradenings on Lead and Arsenic Contaminated Soils