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 | Acesso ao texto completo restrito à biblioteca da Embrapa Unidades Centrais. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
26/04/2002 |
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Data da última atualização: |
07/10/2003 |
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Autoria: |
HEWITT, G. B. |
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Título: |
Grazing Management as Ameans of Regulatiing Spittlebug (Homoptera:Cercopidae) Numbers in Central Brazil |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v.23, n.7, p. 697-707, jul. 1988. |
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Idioma: |
Inglês |
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Conteúdo: |
Short duration, high intensity grazing was evaluated as a method of reducing spittiebug numbers in central Brazil. Intense grazing pressure during the nymphal period resulted in a temporary reduction in nymphal density but aciditiorrai hatching of eggs allowed the density to increase. Intense grazing during the, last generation of adults, prior to the start of the dry season drastically reduced the, nymphal population. Grazing by cattle in general provided an unsuitable habitat for spittiebug egg survival as both grass height and plant cover decreased under ali grazing trealments. In freavily infested pastures (> 20 nymphs/m2) it is recorrurrended to graze the grass short: (< 10 em) during the last gencration of adults (April-July) in order to discourage oviposition by adults laying diapause eggs and to expose eggs to detrimental conditions during the dry season. In pastures with low spittlebug density (< 20 nymphs/m 2 ) it is recommended to maintain the forage height at 15 em - 20 em during the rainy season for maximum production and efficient use of the forage resource.
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Palavras-Chave: |
Grazing pressure; nymphal density; spittlebug control. |
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Thesagro: |
Brachiaria Decumbens. |
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Thesaurus NAL: |
oviposition. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01666naa a2200181 a 4500
001 1106923
005 2003-10-07
008 1988 bl uuuu u00u1 u #d
100 1 $aHEWITT, G. B.
245 $aGrazing Management as Ameans of Regulatiing Spittlebug (Homoptera$bCercopidae) Numbers in Central Brazil
260 $c1988
520 $aShort duration, high intensity grazing was evaluated as a method of reducing spittiebug numbers in central Brazil. Intense grazing pressure during the nymphal period resulted in a temporary reduction in nymphal density but aciditiorrai hatching of eggs allowed the density to increase. Intense grazing during the, last generation of adults, prior to the start of the dry season drastically reduced the, nymphal population. Grazing by cattle in general provided an unsuitable habitat for spittiebug egg survival as both grass height and plant cover decreased under ali grazing trealments. In freavily infested pastures (> 20 nymphs/m2) it is recorrurrended to graze the grass short: (< 10 em) during the last gencration of adults (April-July) in order to discourage oviposition by adults laying diapause eggs and to expose eggs to detrimental conditions during the dry season. In pastures with low spittlebug density (< 20 nymphs/m 2 ) it is recommended to maintain the forage height at 15 em - 20 em during the rainy season for maximum production and efficient use of the forage resource.
650 $aoviposition
650 $aBrachiaria Decumbens
653 $aGrazing pressure
653 $anymphal density
653 $aspittlebug control
773 $tPesquisa Agropecuária Brasileira, Brasília$gv.23, n.7, p. 697-707, jul. 1988.
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