At first glance, soil sampling would seem to be a relatively easy task. However, when you consider the variability that likely exists within a field because of inherent soil formation factors and past production practices, the collection of a representative soil sample becomes more of a challenge.

If you are considering fall application of anhydrous ammonia to corn fields (the only nitrogen fertilizer recommended for fall application), remember to wait until soil temperatures cool to 50 F and continue to trend colder.

As the name would imply, evaporite minerals form by the evaporation of sea water millions of years ago. Gypsum and limestone are two evaporite minerals found in Kansas and used for agricultural amendments.