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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
11/09/1995 |
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Data da última atualização: |
11/09/1995 |
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Autoria: |
ALVA, A. K.; GRAHAM, J. H.; ANDERSON, C. A. |
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Afiliação: |
Univ. of Florida, IFAS, Citrus Research and Education Center, 700 Experiment Station Road, Lake Alfred, FL 33850. |
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Título: |
Division S-4-soil fertility & plant nutrition. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Soil Science Society of America Journal, v.59, n.2, p.481-486, 1995. |
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ISSN: |
0361-5995 |
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Idioma: |
Inglês |
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Conteúdo: |
Soil pH is an important factor affecting the forms of Cu in soils and, in turn, its effects on plants. A field experiment was conducted on a Candler fine sand (sandy, hyperthermic, uncoated Typic Quartzip-samment) to investigate the effects of high soil Cu (as result of repeated spray applications of Cu on the soil surface in 14 doses, for a total of 120 kg Cu ha-1) on growth and mineral content in the foliage of young `Hamlin' orange [Citrus sinensis (L.) Osbeck] trees on three different rootstocks at four soil pH regimes pH 5.0-7.0 at 0.5-unit increments). The recovery of Cu (15 mo after the last application), by Mehlich 3 (M3) extraction, in the top 15 cm of soil accounted for 22 to 80% of applied Cu depending on the soil pH. Stem diameter and canopy volumeof the trees (3 and 5yr old) were significantly influenced by soil pH, Cu, and rootstock. Effects of Cu on tree growth were more pronounced at pH 5.5 to 6.0 than at the lower or higher pH regimes. The concentration of Cu in mature spring flush foliage of the trees did not exceed the optimal concentration range. There was no significant relationship between M3 soil Cu and Cu concentrations in the foliage of the trees on all three rootstocks. A gignificant relationship was found between concentrations of feeder root Cu and M3 soil, suggesting that the formed can be used as an index of soil Cu status. |
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Palavras-Chave: |
Analysis; Extractable soil copper. |
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Thesaurus Nal: |
experimental design; soil sampling. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01930naa a2200205 a 4500
001 1634021
005 1995-09-11
008 1995 bl uuuu u00u1 u #d
022 $a0361-5995
100 1 $aALVA, A. K.
245 $aDivision S-4-soil fertility & plant nutrition.
260 $c1995
520 $aSoil pH is an important factor affecting the forms of Cu in soils and, in turn, its effects on plants. A field experiment was conducted on a Candler fine sand (sandy, hyperthermic, uncoated Typic Quartzip-samment) to investigate the effects of high soil Cu (as result of repeated spray applications of Cu on the soil surface in 14 doses, for a total of 120 kg Cu ha-1) on growth and mineral content in the foliage of young `Hamlin' orange [Citrus sinensis (L.) Osbeck] trees on three different rootstocks at four soil pH regimes pH 5.0-7.0 at 0.5-unit increments). The recovery of Cu (15 mo after the last application), by Mehlich 3 (M3) extraction, in the top 15 cm of soil accounted for 22 to 80% of applied Cu depending on the soil pH. Stem diameter and canopy volumeof the trees (3 and 5yr old) were significantly influenced by soil pH, Cu, and rootstock. Effects of Cu on tree growth were more pronounced at pH 5.5 to 6.0 than at the lower or higher pH regimes. The concentration of Cu in mature spring flush foliage of the trees did not exceed the optimal concentration range. There was no significant relationship between M3 soil Cu and Cu concentrations in the foliage of the trees on all three rootstocks. A gignificant relationship was found between concentrations of feeder root Cu and M3 soil, suggesting that the formed can be used as an index of soil Cu status.
650 $aexperimental design
650 $asoil sampling
653 $aAnalysis
653 $aExtractable soil copper
700 1 $aGRAHAM, J. H.
700 1 $aANDERSON, C. A.
773 $tSoil Science Society of America Journal$gv.59, n.2, p.481-486, 1995.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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