Soil-Sampling Grid Size Considerations for Site-Specific Nutrient Management in the Southeastern U.S.

One of the most important aspects of site-specific nutrient management is precision soil sampling such as grid- and zone-based strategies to determine varying soil nutrient levels within a field. And for grid soil sampling, one of the most important considerations is the size of the grids as it affects both the sampling resolution and costs. Questions and concerns from growers about the effectiveness of different grid sizes in accurately depicting soil nutrient variability have become common recently, warranting an investigation into how grid size affects application accuracy and economics of site-specific nutrient management in the southeastern U.S. Earn 0.5 CEUs in Nutrient Management by reading this article and taking the quiz at https://web.sciencesocieties.org/Learning-Center/Courses.