Acid Ammonium Citrate as P Extractor for Fertilizers of Varying Solubility
ABSTRACT: There are several globally accepted methods to chemically characterize P-fertilizers, but not all are suitable to predict the agronomic efficiency of the P sources in terms of plant nutrition. Our aim was to investigate the performance of P extractors for fertilizers, investigating the con...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Ciência do Solo
2018-12-01
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| Series: | Revista Brasileira de Ciência do Solo |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100503&lng=en&tlng=en |
| _version_ | 1818325468072378368 |
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| author | Wedisson Oliveira Santos Edson Marcio Mattiello Matheus Sampaio Carneiro Barreto Reinaldo Bertola Cantarutti |
| author_facet | Wedisson Oliveira Santos Edson Marcio Mattiello Matheus Sampaio Carneiro Barreto Reinaldo Bertola Cantarutti |
| author_sort | Wedisson Oliveira Santos |
| collection | DOAJ |
| description | ABSTRACT: There are several globally accepted methods to chemically characterize P-fertilizers, but not all are suitable to predict the agronomic efficiency of the P sources in terms of plant nutrition. Our aim was to investigate the performance of P extractors for fertilizers, investigating the consistency of different methods for P sources of varying properties and the related plant responses. The experiment was carried out in a greenhouse, using corn as a model plant. Phosphorus values extractable in water, 2 % citric acid, 2 % formic acid, ammonium neutral citrate + water, and acid ammonium citrate were evaluated for eight P fertilizers of varied solubility and correlated with P uptake by corn. The extractors citric acid and formic acid recovered no predictive amounts of P from crystalline apatite sources (Araxá and Patos phosphate rocks, PRs). However, they showed a satisfactory performance for Bayóvar PR and partially acidulated PRs but extracted low amounts of P from soluble P sources such as superphosphates. Neutral ammonium citrate + water extractors could accurately predict the efficiency of soluble P sources but underestimated the performance of Bayóvar (a reactive PR). In contrast, the extractor acid ammonium citrate, AAC, (pH 3) accurately predicted the agronomic efficiency of all P fertilizers. We therefore suggest AAC as an effective predictor of the agronomic effectiveness of any inorganic phosphorus sources. |
| first_indexed | 2024-12-13T11:44:57Z |
| format | Article |
| id | doaj.art-de5038afdd5e495f9e9967f8d74bba6f |
| institution | Directory Open Access Journal |
| issn | 1806-9657 |
| language | English |
| last_indexed | 2024-12-13T11:44:57Z |
| publishDate | 2018-12-01 |
| publisher | Sociedade Brasileira de Ciência do Solo |
| record_format | Article |
| series | Revista Brasileira de Ciência do Solo |
| spelling | doaj.art-de5038afdd5e495f9e9967f8d74bba6f2022-12-21T23:47:33ZengSociedade Brasileira de Ciência do SoloRevista Brasileira de Ciência do Solo1806-96572018-12-0143010.1590/18069657rbcs20180072S0100-06832019000100503Acid Ammonium Citrate as P Extractor for Fertilizers of Varying SolubilityWedisson Oliveira SantosEdson Marcio MattielloMatheus Sampaio Carneiro BarretoReinaldo Bertola CantaruttiABSTRACT: There are several globally accepted methods to chemically characterize P-fertilizers, but not all are suitable to predict the agronomic efficiency of the P sources in terms of plant nutrition. Our aim was to investigate the performance of P extractors for fertilizers, investigating the consistency of different methods for P sources of varying properties and the related plant responses. The experiment was carried out in a greenhouse, using corn as a model plant. Phosphorus values extractable in water, 2 % citric acid, 2 % formic acid, ammonium neutral citrate + water, and acid ammonium citrate were evaluated for eight P fertilizers of varied solubility and correlated with P uptake by corn. The extractors citric acid and formic acid recovered no predictive amounts of P from crystalline apatite sources (Araxá and Patos phosphate rocks, PRs). However, they showed a satisfactory performance for Bayóvar PR and partially acidulated PRs but extracted low amounts of P from soluble P sources such as superphosphates. Neutral ammonium citrate + water extractors could accurately predict the efficiency of soluble P sources but underestimated the performance of Bayóvar (a reactive PR). In contrast, the extractor acid ammonium citrate, AAC, (pH 3) accurately predicted the agronomic efficiency of all P fertilizers. We therefore suggest AAC as an effective predictor of the agronomic effectiveness of any inorganic phosphorus sources.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100503&lng=en&tlng=enphosphorus fertilizerscitric acidammonium neutral citrate |
| spellingShingle | Wedisson Oliveira Santos Edson Marcio Mattiello Matheus Sampaio Carneiro Barreto Reinaldo Bertola Cantarutti Acid Ammonium Citrate as P Extractor for Fertilizers of Varying Solubility Revista Brasileira de Ciência do Solo phosphorus fertilizers citric acid ammonium neutral citrate |
| title | Acid Ammonium Citrate as P Extractor for Fertilizers of Varying Solubility |
| title_full | Acid Ammonium Citrate as P Extractor for Fertilizers of Varying Solubility |
| title_fullStr | Acid Ammonium Citrate as P Extractor for Fertilizers of Varying Solubility |
| title_full_unstemmed | Acid Ammonium Citrate as P Extractor for Fertilizers of Varying Solubility |
| title_short | Acid Ammonium Citrate as P Extractor for Fertilizers of Varying Solubility |
| title_sort | acid ammonium citrate as p extractor for fertilizers of varying solubility |
| topic | phosphorus fertilizers citric acid ammonium neutral citrate |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100503&lng=en&tlng=en |
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