This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
NRCSIA. Homeowners are encouraged to test their soils for nutrient needs and to apply only what nutrients are needed for healthy lawn Farmers practice the same testing procedure nrcs usda gov Lynn Betts This image is work of United States Department of Agriculture employee taken or made during the course of the person's official