Your soil is most depleted after a full season of crop demand, making fall ideal for testing. In milder western regions, soil ...

Soils can be thought of as storehouses for plant nutrients. Many nutrients, such as calcium and magnesium, may be supplied to plants solely from reserves held in the soil. Others like potassium are ...

An ionized calcium test measures the levels of a specific form of calcium in your blood. It’s performed by taking a small blood sample. You’ll typically need to fast before the test. Calcium is an ...