Striking the Right Balance Reasons to Analyze Soil Soil testing provides a starting place for soil improvement. Unless you know the problems in your garden soil, you are only guessing when you apply fertilizer. For soil testing information, contact the Oklahoma County Extension Center, 2500 NE 63rd St, Oklahoma City, (405) 713-1125. Learn what type of soil composition you have (clay, sandy etc.) Find out what your soil is lacking (nutrients, micronutrients, etc.) Pinpoint soi