Over the past year, our soil experts have added the Soil Health Assessment test. Soil health is the overlapping areas of the chemical, physical and biological properties of the soil. Previously, the chemical or nutrient status of the soil has [...]
Being aware of the potential risks of heavy metals in soils is important. In Omaha, 125 years of lead smelting at the American Smelting and Refining Company (ASARCO) resulted in elevated soil lead concentrations (around 400 ppm) near residential housing. [...]
Ward Laboratories uses soil test methods developed and calibrated by land grant universities. Standard methods are published in several manuals. We prefer to use standard methods that have performed well for many years. Soil pH & EC: We use a [...]
Available Water Holding Capacity (AWC) of soil is the amount of water held in the soil for crop growth and yield. Field capacity is the amount of water a soil will hold against gravity at a water tension of 1/3 [...]