Soil testing is probably the best thing you can do for your property if you would like a nice lawn. The test can reveal the soil type and quality of you soil. It allows you to find out if you are deficient or have an abundance of certain types of nutrients. The test will reveal your soils PH levels. PH is the measure of hydrogen ions in your soil. The hydrogen ions bind with other plant nutrients and make them available for the lawn to consume and grow. The addition of lime will neutralize the free hydrogen ions by converting the hydrogen to water and freeing up the nutrients for you lawn.