The best soils are well drained loam soils with organic matter of 2% or more. For most fruit crops, the soil pH should be between 6 and 7.5. Before planting your orchard, take a soil sample and have it analyzed. The Utah State University Analytical Lab offers several levels of soil testing. The test “Routine plus Micronutrient” is suggested prior to planting fruit crops. (For instructions on soil sampling and testing see the USU Extension Bulletin “Frequently Asked Questions About Soil Testing” at http://extension.usu.edu/files/publications/publication/HG-513.pdf)
The soil test results will tell you the soil pH, organic matter content (%), salinity, and an estimate of plant available phosphorus and potassium. It is best to submit your samples the year before you plan to plant. This allows time to add organic matter and phosphorus and potassium fertilizer if recommended by the soil test.