Soil sampling requirements in Brazil
National guidance: Embrapa, Amostragem de solo para recomendação de calagem e adubação.
Embrapa, Amostragem de solo para recomendação de calagem e adubação: A uniform 40 ha field needs at least 4 composite samples of no more than 10 ha each, and at least 40 cores in all, 10 per sample.
| Country / region | Purpose / programme | Time / frequency | Area per sample | Method | Depth | Cores | Status and source |
|---|---|---|---|---|---|---|---|
| Brazil | |||||||
| Brazil | Soil sample for lime and fertiliser recommendationsEmbrapa, Amostragem de solo para recomendação de calagem e adubação |
| Homogeneous plots (talhões) of at most 10 ha, one composite each | Split the area into homogeneous plots by soil colour, relief, texture, drainage, erosion, vegetation or previous crop, cropping, liming and fertiliser history, management and yield; walk each plot at random in a zigzag. | 0 to 20 cm for conventional tillage, perennial crops, and no-till fertilised in the row up to the 6th consecutive crop. 0 to 10 cm for no-till after the 6th crop, established pasture and undisturbed natural grassland. 20 to 40 and 40 to 60 cm before the first planting, to find barriers. | At least 10 points per homogeneous plot, ideally about 20 | Official guidanceEmbrapa, Amostragem de Solo para Recomendação de Calagem e Adubação (PDF folder, 2009) |
Who it applies to, the exact wording and every source
The wording in the sourceTiming
Area per sample
Method
Depth
Cores
Field identifiers
SourcesSources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team. | |||||||
Soil sampling regulations in every country
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Set the area per sample, the cores and the depth your rule asks for. GeoPard places the points on a grid or by zone, routes the walk, prints the labels and takes the plan to the field on a phone.
A planning reference built from official sources, not legal advice. Rules apply by jurisdiction, nutrient, land use and programme: check the current official text and your laboratory’s instructions before fieldwork.