A fertility map organizes soil information spatially. Its usefulness depends on sample quality, sampling point locations and interpretation consistent with the crop and its management.

Sampling that addresses the question

Management units, depths and the number of sampling points are defined before collection. Investigating a contamination hotspot may require a different design from that used for fertility; the objectives must remain clear.

Combine the layers

Nutrient, acidity, organic matter and texture results are interpreted alongside production history. Maps record sampling points and make clear what was measured and what was estimated between samples.

Connect information with action

Terrapure's approach combines maps with restoration priorities and agronomic guidance. The next step is to monitor whether the selected practices improve the chosen indicators: soil condition, marketable yield and input efficiency.

A map shows where to investigate and act. The effect of an intervention on crop production must be evaluated in the field.

Further reading: Amostragem de solo para análises de fertilidade, de manejo e de contaminação [Soil sampling for fertility, management and contamination analyses]. Embrapa, 2009.

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