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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Map of total phosphorus content in native soils of Brazil

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Paulo Sergio Pavinato ; Gustavo Cassoni Rocha ; Maurício Roberto Cherubin ; Ian Harris ; Davey Leonard Jones ; Paul John Anthony Withers
Total Authors: 6
Document type: Journal article
Source: Scientia Agricola; v. 78, n. 6, p. -, 2021.
Web of Science Citations: 0

ABSTRACT: Knowledge of the distribution of total phosphorus (P) content in native soils provides information on the management of ecosystem, land capability for agriculture, environmental quality, and biodiversity conservation. We mapped the spatial distribution of total P concentrations in topsoils (0-30 cm) of uncultivated (native) areas in Brazil. We obtained data on native total P of the southern, south-eastern, and north-eastern regions from reports of exploratory projects developed between 1960s and 1970s by EMBRAPA and by the RADAM Brazil Project. We estimated data from the central-western and northern regions from the relationship between total P and soil properties (Fe, Al, C and clay content), based on the RADAM Brazil Project. Soil total P varied widely (< 25 to > 500 mg kg–1) in all regions in Brazil. Higher concentrations (> 500 mg kg–1) were observed in southern region compared to most of the rest of the country (< 200 mg kg–1), while the Cerrado (Central), Amazon (North) and Caatinga (Northeast) biomes are very poor in total P. This first national native soil total P map provides a valuable baseline for understanding the historical patterns of agriculture expansion in Brazil. It allows quantifying the effect of agriculture expansion and future cropping systems on soil available P content and legacy P, targeting regional soil-crop specific strategies for optimization of ecosystem services, and mitigating potential environmental risk due to P transference to water bodies. (AU)

FAPESP's process: 17/04186-2 - Soil phosphorus balance and potential legacy phosphorus exploitation in Brazilian crop and livestock production systems
Grantee:Paulo Sergio Pavinato
Support type: Scholarships abroad - Research