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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
18/05/1999 |
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Data da última atualização: |
06/03/2010 |
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Autoria: |
MIKKELSEN, D. S.; KUO, S. |
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Título: |
Zink fertilization and behavior in flooded soils. |
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Ano de publicação: |
1977 |
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Fonte/Imprenta: |
Farnham Royal: CAB, 1977. |
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Páginas: |
59p. |
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ISBN: |
0-85198-397-9 |
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Idioma: |
Inglês |
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Conteúdo: |
A review of recent work in the area of zinc fertilization has suggested a variety of factors that contribute to zinc deficiency in rice. The major factors are: low soil zinc, high pH soils (alkali and calcareous), flooding, organic matter additions, low soil organic matter, hgh carbon dioxide and bicarbonate ion levels, organic, acids; high soi phosphorus, effects of low oxidation-reduction potentials, low soil temperatures and genetic differences among rice varieties. Great strides have been made in recent years in developing an understanding of the behavior of zinc in both upland flooded soils. In spite of this, progress lags in research aproprieate to flooded soils. Information is badly needed to characterize the equilibria controlling zinc concetrations and measuring zinc availabiity. The effects of soil submergence on zinc aviilability are only partially understood. Research is needed on the complex chemical, physicochemical and biological reactions regulating zinc availability when a soil is flooded. Relatively little is known aourt the residual benefits of zinc fertilizers and the possibilities of zinc toxicity. An excellent opportunity exists to use genetic variability as a means of controlling zinc deficiency. Certainty a better undrstanding of soil chemistry, micrountrient availability and plant-soil relations will enhance management practices for more efficient rice production. |
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Palavras-Chave: |
Residual effect. |
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Thesagro: |
Adubação; Arroz; Efeito Residual; Fertilizante; Fósforo; Solo; Zinco. |
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Thesaurus Nal: |
fertilizers; phosphorus; rice; soil; zinc. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02093nam a2200301 a 4500
001 1386661
005 2010-03-06
008 1977 bl uuuu 00u1 u #d
020 $a0-85198-397-9
100 1 $aMIKKELSEN, D. S.
245 $aZink fertilization and behavior in flooded soils.
260 $aFarnham Royal: CAB$c1977
300 $a59p.
520 $aA review of recent work in the area of zinc fertilization has suggested a variety of factors that contribute to zinc deficiency in rice. The major factors are: low soil zinc, high pH soils (alkali and calcareous), flooding, organic matter additions, low soil organic matter, hgh carbon dioxide and bicarbonate ion levels, organic, acids; high soi phosphorus, effects of low oxidation-reduction potentials, low soil temperatures and genetic differences among rice varieties. Great strides have been made in recent years in developing an understanding of the behavior of zinc in both upland flooded soils. In spite of this, progress lags in research aproprieate to flooded soils. Information is badly needed to characterize the equilibria controlling zinc concetrations and measuring zinc availabiity. The effects of soil submergence on zinc aviilability are only partially understood. Research is needed on the complex chemical, physicochemical and biological reactions regulating zinc availability when a soil is flooded. Relatively little is known aourt the residual benefits of zinc fertilizers and the possibilities of zinc toxicity. An excellent opportunity exists to use genetic variability as a means of controlling zinc deficiency. Certainty a better undrstanding of soil chemistry, micrountrient availability and plant-soil relations will enhance management practices for more efficient rice production.
650 $afertilizers
650 $aphosphorus
650 $arice
650 $asoil
650 $azinc
650 $aAdubação
650 $aArroz
650 $aEfeito Residual
650 $aFertilizante
650 $aFósforo
650 $aSolo
650 $aZinco
653 $aResidual effect
700 1 $aKUO, S.
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Embrapa Amazônia Oriental (CPATU) |
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