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Comparação dos extratores Mehlich-1 e Bray-1 com o coletor a base de óxido de ferro na avaliação do fósforo no solo
| Content Provider | Semantic Scholar |
|---|---|
| Author | Palácio, Soraya Moreno Luchese, Eduardo Bernardi Lenzi, Ervim |
| Copyright Year | 2008 |
| Abstract | The efficiency of methods Mehlich-1, Bray-1 and phosphorus collector to extract phosphorus from soils was tested. Samples of three soils, Dystric Nitosols; Rhodic Fenasols; Ferric Acresol and maize ( Zea mays L.) as test plant were used in a greenhouse. Soils received two doses (9.50 and 4.75 g kg -1 ) of 5 organic fertilizers: 1 - sewage sludge from Curitiba - PR; 2 - sewage sludge from Maringa - PR, both limed at 30%; 3 - sewage sludge from Curitiba - PR, limed at 50%; 4 - chicken manure; 5 - bovine manure. The experiment had a control treatment test. Plants and soil samples were collected after 40 days of sowing. While phosphorus availability in the collected soils was evaluated by extractors Mehlich-1, Bray-1 and the phosphorus collector method (disks of synthetic fabric covered by iron oxide), phosphorus concentration in plants and soil solutions were determined by the classical spectrophotometric UV-Vis method. A variance analysis of results showed that the three methods predict the phosphorus absorbed by the corn plants. Bray-1 method presented less interference with the treatments and the clay content of soils. |
| Starting Page | 1151 |
| Ending Page | 1156 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.4025/actascitechnol.v22i0.3001 |
| Volume Number | 22 |
| Alternate Webpage(s) | http://periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/download/3001/2201 |
| Alternate Webpage(s) | https://doi.org/10.4025/actascitechnol.v22i0.3001 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
