Work

Distribution of C and inorganic phosphorus fractions in different aggregate sizes under forestry, agroforestry system and pasture

Year: 2018

Type: article

Abstract: The objective of this study was to evaluate the organic carbon (OC) distribution and inorganic phosphorus (P) fractions on different soil aggregates classes under forestry fragment of Atlantic Forest, pasture and agroforestry managed for a long period.Soil samples were collected at depths of 0.00-0.10,0.10-0.20 and 0.20-0.60m, and the aggregate stability analysis was performed at each depth.The OC and the inorganic P fractions (P bic readily available, NaHCO 3 0.5 mol L -1 ; P Na1 moderately available, NaOH 0.1 mol L -1 ; and P Na2 restricted availability, NaOH 0.5 mol L -1 ) were determined in the respective classes of soil aggregates 4-2, 2-1, 1-0.5, 0.5-0.25 mm.Soil under forestry fragment showed higher OC contents and regardless the land use, highest values of inorganic P were found in the aggregates > 1 mm.Forestry showed highest levels of P bic , while agroforestry showed the highest levels of P Na1 , and pasture had highest values of P Na2 .

Source: Journal of soil science and plant nutrition

DOI: 10.4067/s0718-95162018005001202

Authors: Paulo Roberto da Rocha Junior, Paulo Henrique Ribeiro, Luiz Felipe Mesquita, Felipe Vaz Andrade, Eduardo de Sá Mendonça

Institution: Universidade Federal do Espírito Santo

Language: English

Topic: Soil Carbon and Nitrogen Dynamics

Subfield: Soil Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDGs: Life on land, Zero hunger

Open Access status: hybrid

Estimated APC paid: $3,190