In the past decade or two, soil sampling evolved from pulling a few plugs of dirt from each field to doing so on a grid. Grid sampling — if you’re unfamiliar — means gridding your field into blocks of 5 acre or even 2.5 acres. The more samples from each field, the better to more accurately prescribe your crop inputs. But sometimes dividing your field into 2.5 acre chunks isn’t small enough to straighten out a stubborn problem. Agronomist Robb Dedman and Layne Miles of Miles Farms explain why they sometimes shrink their soil samples to 1 acre blocks in order to diagnose yield problems for which they can’t seem to find the culprit.

Presented by Advanced Drainage Systems with support from Agricen.