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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
17/10/1995 |
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Data da última atualização: |
17/10/2013 |
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Autoria: |
GREGG, P. E. H.; GOH, K. M. |
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Título: |
Field studies with radioactive sulphur-labelled gypsum fertiliser. II. Climatic and management factors affecting the movement of fertiliser sulphur in soils. |
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Ano de publicação: |
1979 |
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Fonte/Imprenta: |
New Zealand Journal of Agricultural Research, v.22, p.425-429, 1979. |
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Idioma: |
Inglês |
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Conteúdo: |
The movement of fertiliser sulphur (S), within soils belonging to the recent and yellow- brown earth soil groups, was investigated by applying S labelled gypsum fertiliser to several field trials. Under constrasting spring rainfall conditions, and at the same rate of S fertiliser application, a markedly different pattern of S distribution occurred on two recent soils of similar texture. Year-to-year variations in winter rainfall (hence leaching) also influenced fertiliser S movement at the sites studied. The magnitude of this effect depends to some extent on soil type. Halving the rate of fertiliser S application did not affect the depth of fertiliser S penetration on two soils of differing texture but resulted in 50% less fertiliser S in any one soil depth investigated. A 2-month delay in fertiliser S application, in spring, resulted in less leaching losses on a sandy-textured soil. Little difference occurred in the distribution of fertiliser S in a heavier-textured soil. The significance of the results is discussed in relation to the interpretation of fertiliser trial results and current fertiliser practices. |
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Palavras-Chave: |
Claimatic; Estudo de campo; Fertility; Field study; Sulphur. |
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Thesagro: |
Clima; Enxofre; Fertilidade; Solo. |
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Thesaurus Nal: |
gypsum; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01882naa a2200265 a 4500
001 1786506
005 2013-10-17
008 1979 bl --- 0-- u #d
100 1 $aGREGG, P. E. H.
245 $aField studies with radioactive sulphur-labelled gypsum fertiliser. II. Climatic and management factors affecting the movement of fertiliser sulphur in soils.
260 $c1979
520 $aThe movement of fertiliser sulphur (S), within soils belonging to the recent and yellow- brown earth soil groups, was investigated by applying S labelled gypsum fertiliser to several field trials. Under constrasting spring rainfall conditions, and at the same rate of S fertiliser application, a markedly different pattern of S distribution occurred on two recent soils of similar texture. Year-to-year variations in winter rainfall (hence leaching) also influenced fertiliser S movement at the sites studied. The magnitude of this effect depends to some extent on soil type. Halving the rate of fertiliser S application did not affect the depth of fertiliser S penetration on two soils of differing texture but resulted in 50% less fertiliser S in any one soil depth investigated. A 2-month delay in fertiliser S application, in spring, resulted in less leaching losses on a sandy-textured soil. Little difference occurred in the distribution of fertiliser S in a heavier-textured soil. The significance of the results is discussed in relation to the interpretation of fertiliser trial results and current fertiliser practices.
650 $agypsum
650 $asoil
650 $aClima
650 $aEnxofre
650 $aFertilidade
650 $aSolo
653 $aClaimatic
653 $aEstudo de campo
653 $aFertility
653 $aField study
653 $aSulphur
700 1 $aGOH, K. M.
773 $tNew Zealand Journal of Agricultural Research$gv.22, p.425-429, 1979.
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Embrapa Pantanal (CPAP) |
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