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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
01/03/1996 |
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Data da última atualização: |
01/03/1996 |
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Autoria: |
MacKAY, A. D.; GREGG, P. E. H.; SYERS, J. K. |
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Título: |
A comparison of dicalcium phosphate and single superphosphate as phosphate sources for pasture. |
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Ano de publicação: |
1980 |
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Fonte/Imprenta: |
New Zealand Journal of Experimental Agriculture, v.8, n.1, p.7-11, 1980. |
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Idioma: |
Inglês |
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Conteúdo: |
The effect of commercially available dicalcium phosphate (DCP) and single superphos- phate on pasture production was evaluated in glasshouse and field trials. When compa- red on a unit-P basis, DCP (5.6% P) was slightly inferior (up to 10%) to superphosphate (8.6% P) in a glasshouse trial with ryegrass as the indicator plant; on a unit weight basis, DCP was only 60-70% as effective as superphosphate. No differences were obtained in the P concentration of the herbage obtained using the two materials. In a field trial on a P- responsive site, DCP and superphosphate gave similar increases in pasture production. Marked treatment differences were obtained for the P concentrations in ryegrass and clo- ver in the field trial, particularly in the first harvest and with ryegrass. No difference was ob- tained in the short-term residual effect of the two materials. The data obtained are interpre- ted in terms of the chemical and mineralogical composition, and water solubility of DCP. |
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Palavras-Chave: |
Efetividade relativa; Fertilizacao; Fertilization; Lime; Pasture; Relative effectiveness. |
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Thesagro: |
Fosfato; Pastagem. |
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Thesaurus Nal: |
dicalcium phosphate; superphosphate. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01735naa a2200265 a 4500
001 1787656
005 1996-03-01
008 1980 bl --- 0-- u #d
100 1 $aMacKAY, A. D.
245 $aA comparison of dicalcium phosphate and single superphosphate as phosphate sources for pasture.
260 $c1980
520 $aThe effect of commercially available dicalcium phosphate (DCP) and single superphos- phate on pasture production was evaluated in glasshouse and field trials. When compa- red on a unit-P basis, DCP (5.6% P) was slightly inferior (up to 10%) to superphosphate (8.6% P) in a glasshouse trial with ryegrass as the indicator plant; on a unit weight basis, DCP was only 60-70% as effective as superphosphate. No differences were obtained in the P concentration of the herbage obtained using the two materials. In a field trial on a P- responsive site, DCP and superphosphate gave similar increases in pasture production. Marked treatment differences were obtained for the P concentrations in ryegrass and clo- ver in the field trial, particularly in the first harvest and with ryegrass. No difference was ob- tained in the short-term residual effect of the two materials. The data obtained are interpre- ted in terms of the chemical and mineralogical composition, and water solubility of DCP.
650 $adicalcium phosphate
650 $asuperphosphate
650 $aFosfato
650 $aPastagem
653 $aEfetividade relativa
653 $aFertilizacao
653 $aFertilization
653 $aLime
653 $aPasture
653 $aRelative effectiveness
700 1 $aGREGG, P. E. H.
700 1 $aSYERS, J. K.
773 $tNew Zealand Journal of Experimental Agriculture$gv.8, n.1, p.7-11, 1980.
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Registro original: |
Embrapa Pantanal (CPAP) |
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