Map of total phosphorus content in native soils of Brazil

Autor(es)

Paulo Sergio Pavinato ^[1] ; Gustavo Cassoni Rocha ^[2] ; Maurício Roberto Cherubin ^[3] ; Ian Harris ^[4] ; Davey Leonard Jones ^[5] ; Paul John Anthony Withers ^[6]

Afiliação do(s) autor(es)

^[1] Universidade de São Paulo. ESALQ - Brasil

^[2] Universidade de São Paulo. ESALQ - Brasil

^[3] Universidade de São Paulo. ESALQ - Brasil

^[4] Bangor University. School of Natural Sciences - Ucrânia

^[5] Bangor University. School of Natural Sciences - Ucrânia

^[6] Lancaster University. Lancaster Environment Centre - Ucrânia

• Tipo de documento: Artigo Científico
• Fonte: Scientia Agricola; v. 78, n. 6 2020-10-16.

Resumo

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)

• Processo FAPESP: 17/04186-2 - Balanço de fósforo no solo e potencial de exploração do legado de fósforo sob sistemas de produção agropecuária brasileira
• Beneficiário: Paulo Sergio Pavinato
• Modalidade de apoio: Bolsas no Exterior - Pesquisa