Critical limit for phosphorus in a Red Latosol of the Brazilian Cerrado
ABSTRACT Successive applications of phosphate fertilisers can exceed the phosphorus (P) requirements of plants and soil, resulting in surface accumulation and loss to aquatic systems, and therefore require monitoring. The aim of this study was to determine a mathematical model for the critical limit...
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Universidade Federal do Ceará
2025-01-01
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| Series: | Revista Ciência Agronômica |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902025000100632&lng=en&tlng=en |
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| author | Louise Stefanello Hemielevski June Faria Scherrer Menezes Augusto Matias de Oliveira Mariana Pina da Silva Berti Linia Dayana Lopes Machado Paulo Fernandes Boldrin Veridiana Cardozo Gonçalves Cantão Rodrigo Gomes Silva |
| author_facet | Louise Stefanello Hemielevski June Faria Scherrer Menezes Augusto Matias de Oliveira Mariana Pina da Silva Berti Linia Dayana Lopes Machado Paulo Fernandes Boldrin Veridiana Cardozo Gonçalves Cantão Rodrigo Gomes Silva |
| author_sort | Louise Stefanello Hemielevski |
| collection | DOAJ |
| description | ABSTRACT Successive applications of phosphate fertilisers can exceed the phosphorus (P) requirements of plants and soil, resulting in surface accumulation and loss to aquatic systems, and therefore require monitoring. The aim of this study was to determine a mathematical model for the critical limit for phosphorus in the environment (CLPE) in a Red Latosol of the Cerrado, and to monitor the amount of P in the soil of 46 rural properties in the micro watershed of the Ribeirão Abóbora River. Sand was added to a dystroferric Red Latosol to simulate soils with textures of 10%, 20%, 30%, 40% and 50% clay, in order to quantify the maximum P adsorption capacity (MPAC) and determine the CLPE. Soil from 46 rural properties that make up the micro watershed of the Ribeirão Abóbora River was collected, and the P and clay content was determined. The MPAC decreased proportionally to the reduction in clay content. Th e estimating equation to determine the CLPE for the Red Latosol of the Cerrado is CLPE = 16.64 + 0.432* (% clay), which can be simplified to CLPE = 20 + 0.5* (% clay). The P content on four of the properties in the micro watershed of the Ribeirão Abóbora River is greater than the CLPE. It is therefore recommended that the use of phosphate sources be suspended until appropriate P levels return, and that close attention be paid to these properties so that P values again reach acceptable levels, and no P is transferred to the water sources. |
| format | Article |
| id | doaj-art-556104afdcaf476cb4002edd881d9eec |
| institution | Kabale University |
| issn | 1806-6690 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Universidade Federal do Ceará |
| record_format | Article |
| series | Revista Ciência Agronômica |
| spelling | doaj-art-556104afdcaf476cb4002edd881d9eec2025-01-21T07:38:15ZengUniversidade Federal do CearáRevista Ciência Agronômica1806-66902025-01-015610.5935/1806-6690.20250035Critical limit for phosphorus in a Red Latosol of the Brazilian CerradoLouise Stefanello Hemielevskihttps://orcid.org/0000-0003-3244-3431June Faria Scherrer Menezeshttps://orcid.org/0000-0002-8368-1803Augusto Matias de Oliveirahttps://orcid.org/0000-0003-3556-2030Mariana Pina da Silva Bertihttps://orcid.org/0000-0001-6741-6471Linia Dayana Lopes Machadohttps://orcid.org/0000-0002-4346-824XPaulo Fernandes Boldrinhttps://orcid.org/0000-0001-8239-5111Veridiana Cardozo Gonçalves Cantãohttps://orcid.org/0000-0002-4104-6932Rodrigo Gomes Silvahttps://orcid.org/0000-0003-1404-5480ABSTRACT Successive applications of phosphate fertilisers can exceed the phosphorus (P) requirements of plants and soil, resulting in surface accumulation and loss to aquatic systems, and therefore require monitoring. The aim of this study was to determine a mathematical model for the critical limit for phosphorus in the environment (CLPE) in a Red Latosol of the Cerrado, and to monitor the amount of P in the soil of 46 rural properties in the micro watershed of the Ribeirão Abóbora River. Sand was added to a dystroferric Red Latosol to simulate soils with textures of 10%, 20%, 30%, 40% and 50% clay, in order to quantify the maximum P adsorption capacity (MPAC) and determine the CLPE. Soil from 46 rural properties that make up the micro watershed of the Ribeirão Abóbora River was collected, and the P and clay content was determined. The MPAC decreased proportionally to the reduction in clay content. Th e estimating equation to determine the CLPE for the Red Latosol of the Cerrado is CLPE = 16.64 + 0.432* (% clay), which can be simplified to CLPE = 20 + 0.5* (% clay). The P content on four of the properties in the micro watershed of the Ribeirão Abóbora River is greater than the CLPE. It is therefore recommended that the use of phosphate sources be suspended until appropriate P levels return, and that close attention be paid to these properties so that P values again reach acceptable levels, and no P is transferred to the water sources.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902025000100632&lng=en&tlng=enPhosphate fertilisationEnvironmental controlSoil management |
| spellingShingle | Louise Stefanello Hemielevski June Faria Scherrer Menezes Augusto Matias de Oliveira Mariana Pina da Silva Berti Linia Dayana Lopes Machado Paulo Fernandes Boldrin Veridiana Cardozo Gonçalves Cantão Rodrigo Gomes Silva Critical limit for phosphorus in a Red Latosol of the Brazilian Cerrado Revista Ciência Agronômica Phosphate fertilisation Environmental control Soil management |
| title | Critical limit for phosphorus in a Red Latosol of the Brazilian Cerrado |
| title_full | Critical limit for phosphorus in a Red Latosol of the Brazilian Cerrado |
| title_fullStr | Critical limit for phosphorus in a Red Latosol of the Brazilian Cerrado |
| title_full_unstemmed | Critical limit for phosphorus in a Red Latosol of the Brazilian Cerrado |
| title_short | Critical limit for phosphorus in a Red Latosol of the Brazilian Cerrado |
| title_sort | critical limit for phosphorus in a red latosol of the brazilian cerrado |
| topic | Phosphate fertilisation Environmental control Soil management |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902025000100632&lng=en&tlng=en |
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