Extension Master Gardener volunteers extend the ability of the horticulture extension agent to reach more people in the community with researched based information.  The 2017 Extension Master Gardener Class was conducted in the fall over 14 weeks and taught by the Daviess County horticulture extension agent and University of Kentucky specialists.  One of the topics taught was soil testing. Testing the soil is an important tool used to grow healthy plants. By determining the amount of phosphorus and potassium in the soil as well as the pH level, a gardener may be able to save time and money by only applying to the soil what the plant needs.  Also, he or she would protect the environment by avoiding applications of excess nutrients that can contaminate ground water.  All 16 students demonstrated what they learned about soil testing by properly collecting soil from his or her garden, lawn, and/or landscape during the class.  In addition, 100% of the 15 participants completing the final exam showed their understanding of how to  interpret a soil test result by correctly answering the question on the test.  These trainees have gained skills to teach others how to conduct a soil test in order to grow healthy plants while protecting the environment.