Copper, nickel and zinc phytoavailability in an oxisol amended with sewage sludge and liming
Contents of heavy metal on agricultural soils have been raised by land applications of sewage sludge and may constitute a hazard to plants, animals and humans. A field experiment was carried out from 1983 to 1987, to evaluate the long-term effect of sewage sludge application, with and without liming...
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| Format: | Article |
| Language: | English |
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Universidade de São Paulo
2003-01-01
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| Series: | Scientia Agricola |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400021 |
| _version_ | 1828338009669369856 |
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| author | Martins Adão Luiz Castanheiro Bataglia Ondino Cleante Camargo Otávio Antonio de |
| author_facet | Martins Adão Luiz Castanheiro Bataglia Ondino Cleante Camargo Otávio Antonio de |
| author_sort | Martins Adão Luiz Castanheiro |
| collection | DOAJ |
| description | Contents of heavy metal on agricultural soils have been raised by land applications of sewage sludge and may constitute a hazard to plants, animals and humans. A field experiment was carried out from 1983 to 1987, to evaluate the long-term effect of sewage sludge application, with and without liming, on heavy metal accumulation and availability in a Rhodic Hapludox soil grown with maize (HMD 7974 hybrid). Trials were set up in a completely randomized blocks design with four replications. Each block was split in two bands, one with and another without liming. The sludge was applied in each band at rates: 0, 20, 40, 60 and 80 Mg ha-1 (dry basis) in a single application; and 40, 60 and 80 Mg ha-1 split in two, three and four equal yearly applications, respectively. The soil was sampled for chemical analysis each year after harvest. Soil samples were analysed for Cu, Ni and Zn in extracts obtained with DTPA and Mehlich-3 solutions, and in extracts obtained by digestion with nitric-perchloric acid (total metal contents), using an inductively coupled plasma (ICP) spectrometer. In general, Zn, Cu and Ni concentrations in DTPA and Mehlich-3 extracts increased linearly with sludge application. Total Cu and Zn concentrations increased when sludge was applied, whereas total Ni concentrations were not affected. Both extractants were suitable to evaluate Cu and Zn availability to corn in the soil treated with sewage sludge. Liming reduced the DTPA extractability of Zn. DTPA-extractable Cu concentrations were not significantly affected by liming. Mehlich-3-extractable Cu and Zn concentrations increased with liming. Only DTPA extractant indicated reduction of Ni concentrations in the soil after liming. |
| first_indexed | 2024-04-13T22:22:35Z |
| format | Article |
| id | doaj.art-0f59980bb25c45498b4d452cf51c9a8f |
| institution | Directory Open Access Journal |
| issn | 0103-9016 1678-992X |
| language | English |
| last_indexed | 2024-04-13T22:22:35Z |
| publishDate | 2003-01-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Scientia Agricola |
| spelling | doaj.art-0f59980bb25c45498b4d452cf51c9a8f2022-12-22T02:27:11ZengUniversidade de São PauloScientia Agricola0103-90161678-992X2003-01-01604747754Copper, nickel and zinc phytoavailability in an oxisol amended with sewage sludge and limingMartins Adão Luiz CastanheiroBataglia Ondino CleanteCamargo Otávio Antonio deContents of heavy metal on agricultural soils have been raised by land applications of sewage sludge and may constitute a hazard to plants, animals and humans. A field experiment was carried out from 1983 to 1987, to evaluate the long-term effect of sewage sludge application, with and without liming, on heavy metal accumulation and availability in a Rhodic Hapludox soil grown with maize (HMD 7974 hybrid). Trials were set up in a completely randomized blocks design with four replications. Each block was split in two bands, one with and another without liming. The sludge was applied in each band at rates: 0, 20, 40, 60 and 80 Mg ha-1 (dry basis) in a single application; and 40, 60 and 80 Mg ha-1 split in two, three and four equal yearly applications, respectively. The soil was sampled for chemical analysis each year after harvest. Soil samples were analysed for Cu, Ni and Zn in extracts obtained with DTPA and Mehlich-3 solutions, and in extracts obtained by digestion with nitric-perchloric acid (total metal contents), using an inductively coupled plasma (ICP) spectrometer. In general, Zn, Cu and Ni concentrations in DTPA and Mehlich-3 extracts increased linearly with sludge application. Total Cu and Zn concentrations increased when sludge was applied, whereas total Ni concentrations were not affected. Both extractants were suitable to evaluate Cu and Zn availability to corn in the soil treated with sewage sludge. Liming reduced the DTPA extractability of Zn. DTPA-extractable Cu concentrations were not significantly affected by liming. Mehlich-3-extractable Cu and Zn concentrations increased with liming. Only DTPA extractant indicated reduction of Ni concentrations in the soil after liming.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400021DTPAMehlich-3heavy metalsextractabilitycorn |
| spellingShingle | Martins Adão Luiz Castanheiro Bataglia Ondino Cleante Camargo Otávio Antonio de Copper, nickel and zinc phytoavailability in an oxisol amended with sewage sludge and liming Scientia Agricola DTPA Mehlich-3 heavy metals extractability corn |
| title | Copper, nickel and zinc phytoavailability in an oxisol amended with sewage sludge and liming |
| title_full | Copper, nickel and zinc phytoavailability in an oxisol amended with sewage sludge and liming |
| title_fullStr | Copper, nickel and zinc phytoavailability in an oxisol amended with sewage sludge and liming |
| title_full_unstemmed | Copper, nickel and zinc phytoavailability in an oxisol amended with sewage sludge and liming |
| title_short | Copper, nickel and zinc phytoavailability in an oxisol amended with sewage sludge and liming |
| title_sort | copper nickel and zinc phytoavailability in an oxisol amended with sewage sludge and liming |
| topic | DTPA Mehlich-3 heavy metals extractability corn |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400021 |
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