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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Gado de Leite. |
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Data corrente: |
27/01/1995 |
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Data da última atualização: |
22/09/2010 |
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Autoria: |
NUERNBERG, N. J. |
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Título: |
Movement of surface applied phosphorus fertilizer in a southeastern acid soil. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
1994. |
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Páginas: |
140 p. |
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Idioma: |
Inglês |
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Notas: |
Dissertation (Doctor of Philosophy) - University of Georgia, Athens. |
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Conteúdo: |
Not much is known about the extent of the movement of P fertilizer applied on established alfafa stands in the southeastern USA acid soils. Increasing the avilable P in deeper horizons where plant available water is less limiting during drought spells would be of great interest. Thus, in order to evaluate the extent of the movement of phosphorus in acid soil, a series of field, greenhouse and laboratory experimentswere carried out. Phosphorus and other chemical and physical properties were evaluated for different soil dephts. In addition, a new anion-exchange resin in membrane (AEM) was investigated for extracting available P. The AEM was effective in extracting P, not dependent on soilmineralogy and easily adaptable for a routine use. under field con-ditions, three P rates (0,100 and 200 kg HA-1) were applied on three established alfafa entries (Acid tolerant, Acid sensitive and Apollo). One year after P application, most of the P fertilizer was located in the upper 5 cm layer. However, appreciable amounts of P moved down from the top to the bottom of the plow layer (approximately 16 cm) inproportion to the amount of P fertilizer applied. Below the plow layer, no significant increase in available P was observed. Alfafa entries did not affect the P movement. the effect of earthworms (populations formed by ... |
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Palavras-Chave: |
Acid soil; Fertilizacao; Fertilizer; Solos acidos. |
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Thesagro: |
Adubação; Fósforo; Solo Ácido. |
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Thesaurus Nal: |
phosphorus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01966nam a2200229 a 4500
001 1239968
005 2010-09-22
008 1994 bl uuuu m 00u1 u #d
100 1 $aNUERNBERG, N. J.
245 $aMovement of surface applied phosphorus fertilizer in a southeastern acid soil.
260 $a1994.$c1994
300 $a140 p.
500 $aDissertation (Doctor of Philosophy) - University of Georgia, Athens.
520 $aNot much is known about the extent of the movement of P fertilizer applied on established alfafa stands in the southeastern USA acid soils. Increasing the avilable P in deeper horizons where plant available water is less limiting during drought spells would be of great interest. Thus, in order to evaluate the extent of the movement of phosphorus in acid soil, a series of field, greenhouse and laboratory experimentswere carried out. Phosphorus and other chemical and physical properties were evaluated for different soil dephts. In addition, a new anion-exchange resin in membrane (AEM) was investigated for extracting available P. The AEM was effective in extracting P, not dependent on soilmineralogy and easily adaptable for a routine use. under field con-ditions, three P rates (0,100 and 200 kg HA-1) were applied on three established alfafa entries (Acid tolerant, Acid sensitive and Apollo). One year after P application, most of the P fertilizer was located in the upper 5 cm layer. However, appreciable amounts of P moved down from the top to the bottom of the plow layer (approximately 16 cm) inproportion to the amount of P fertilizer applied. Below the plow layer, no significant increase in available P was observed. Alfafa entries did not affect the P movement. the effect of earthworms (populations formed by ...
650 $aphosphorus
650 $aAdubação
650 $aFósforo
650 $aSolo Ácido
653 $aAcid soil
653 $aFertilizacao
653 $aFertilizer
653 $aSolos acidos
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Embrapa Agropecuária Oeste (CPAO) |
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