Available sulphur by different extractants in soils of the state of Ceará, Brazil
ABSTRACT Despite the relevance of sulphur (S) to plant development, studies in Brazil on its availability in the soil are restricted to a few crops and regions. The aim of this study was to compare extractants for assessing the availability of S, and establish critical levels for soils in the state...
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| Format: | Article |
| Language: | English |
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Universidade Federal do Ceará
2021-11-01
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| Series: | Revista Ciência Agronômica |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902021000400417&tlng=en |
| _version_ | 1818945840169877504 |
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| author | Sandra Catia Pereira Uchôa Fernando Felipe Ferreyra Hernández Valdinar Ferreira Melo Deyse Cristina Oliveira da Silva Armando José da Silva Laís de Brito Carvalho |
| author_facet | Sandra Catia Pereira Uchôa Fernando Felipe Ferreyra Hernández Valdinar Ferreira Melo Deyse Cristina Oliveira da Silva Armando José da Silva Laís de Brito Carvalho |
| author_sort | Sandra Catia Pereira Uchôa |
| collection | DOAJ |
| description | ABSTRACT Despite the relevance of sulphur (S) to plant development, studies in Brazil on its availability in the soil are restricted to a few crops and regions. The aim of this study was to compare extractants for assessing the availability of S, and establish critical levels for soils in the state of Ceará. In the laboratory, available S was extracted from 23 soils (0 - 0.20 m), using two extractants: a solution of Ca(H2PO4)2, 500 mg L-1 P in H2O (MCP) and NH4OAc in HOAc (AMA). In an experiment set up in a greenhouse, forage sorghum ‘EA116’ (Sorghum vulgari Pers.) was used as an indicator plant in two successive crops. A completely randomised experimental design was employed, in a 23 x 2 factorial scheme with three replications, where the factors corresponded to the soils and to the doses of S (0 and 80 mg per experimental unit). The MCP was more efficient in extracting available S than was the AMA, although the S content obtained by both did show a significant correlation (r = 0.96). The available S using MCP showed a better correlation, with an increase in production and in absorbed S, suggesting MCP to be the most suitable extractant. The critical levels for S were 3.90 and 3.40 mg dm-3 for MCP and AMA, respectively. |
| first_indexed | 2024-12-20T08:05:30Z |
| format | Article |
| id | doaj.art-68cce579a99a44c09011884dc7454c99 |
| institution | Directory Open Access Journal |
| issn | 1806-6690 |
| language | English |
| last_indexed | 2024-12-20T08:05:30Z |
| publishDate | 2021-11-01 |
| publisher | Universidade Federal do Ceará |
| record_format | Article |
| series | Revista Ciência Agronômica |
| spelling | doaj.art-68cce579a99a44c09011884dc7454c992022-12-21T19:47:26ZengUniversidade Federal do CearáRevista Ciência Agronômica1806-66902021-11-0152410.5935/1806-6690.20210071Available sulphur by different extractants in soils of the state of Ceará, BrazilSandra Catia Pereira Uchôahttps://orcid.org/0000-0003-4224-070XFernando Felipe Ferreyra Hernándezhttps://orcid.org/0000-0001-6779-6048Valdinar Ferreira Melohttps://orcid.org/0000-0002-7943-9969Deyse Cristina Oliveira da Silvahttps://orcid.org/0000-0003-0602-3695Armando José da Silvahttps://orcid.org/0000-0002-9030-3261Laís de Brito Carvalhohttps://orcid.org/0000-0002-2286-9247ABSTRACT Despite the relevance of sulphur (S) to plant development, studies in Brazil on its availability in the soil are restricted to a few crops and regions. The aim of this study was to compare extractants for assessing the availability of S, and establish critical levels for soils in the state of Ceará. In the laboratory, available S was extracted from 23 soils (0 - 0.20 m), using two extractants: a solution of Ca(H2PO4)2, 500 mg L-1 P in H2O (MCP) and NH4OAc in HOAc (AMA). In an experiment set up in a greenhouse, forage sorghum ‘EA116’ (Sorghum vulgari Pers.) was used as an indicator plant in two successive crops. A completely randomised experimental design was employed, in a 23 x 2 factorial scheme with three replications, where the factors corresponded to the soils and to the doses of S (0 and 80 mg per experimental unit). The MCP was more efficient in extracting available S than was the AMA, although the S content obtained by both did show a significant correlation (r = 0.96). The available S using MCP showed a better correlation, with an increase in production and in absorbed S, suggesting MCP to be the most suitable extractant. The critical levels for S were 3.90 and 3.40 mg dm-3 for MCP and AMA, respectively.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902021000400417&tlng=enExtraction methodsCritical levelLeaf S content |
| spellingShingle | Sandra Catia Pereira Uchôa Fernando Felipe Ferreyra Hernández Valdinar Ferreira Melo Deyse Cristina Oliveira da Silva Armando José da Silva Laís de Brito Carvalho Available sulphur by different extractants in soils of the state of Ceará, Brazil Revista Ciência Agronômica Extraction methods Critical level Leaf S content |
| title | Available sulphur by different extractants in soils of the state of Ceará, Brazil |
| title_full | Available sulphur by different extractants in soils of the state of Ceará, Brazil |
| title_fullStr | Available sulphur by different extractants in soils of the state of Ceará, Brazil |
| title_full_unstemmed | Available sulphur by different extractants in soils of the state of Ceará, Brazil |
| title_short | Available sulphur by different extractants in soils of the state of Ceará, Brazil |
| title_sort | available sulphur by different extractants in soils of the state of ceara brazil |
| topic | Extraction methods Critical level Leaf S content |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902021000400417&tlng=en |
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