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| Registros recuperados : 1 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte; Embrapa Unidades Centrais. |
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Data corrente: |
28/06/1998 |
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Data da última atualização: |
28/06/1998 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NILAKHE, S. S.; MARTIN, P. B.; VALERIO, J. R.; KOLLER, W. W.; SOUZA FILHO, J. A. G. de; SILVA, A. A. da. |
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Título: |
Sampling plants for spittlebug eggs in pastures of Brachiaria decumbens. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.19, n.8, p. 935-941, ago. 1984. |
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Idioma: |
Inglês |
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Conteúdo: |
A sampling study of spittlebug eggs in pastures of Brachiaria decumbens was conducted by using a sample unit of 15 x 15 cm. The number os samples required for a certain level of precision was inversely proportional to population density. A crude estimate of number of samples necessary for 10, 15 and 20% of precision were 133,59 and 33, respectively. A study of sampling variation showed that differences between plots were much more important than the block differences; therefore plot to plot variation must be considered while sampling spittlebug eggs. The distribution pattern of numbers of eggs per 225 cm2 of pasture fitted the negative binomial series. The sequential sampling plan presented here would reduce the sampling time over the conventional (fixed sample numbers) sampling. |
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Palavras-Chave: |
Amostragem sequencial; Eficiencia da amostragem; Sampling efficiency; Sequential sampling. |
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Thesagro: |
Deois Flavopicta; Zulia Entreriana. |
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Thesaurus NAL: |
Cercopidae. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/203825/1/Sampling-plants-for-spittlebug-eggs.pdf
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Marc: |
LEADER 01595naa a2200265 a 4500
001 1104784
005 1998-06-28
008 1984 bl uuuu u00u1 u #d
100 1 $aNILAKHE, S. S.
245 $aSampling plants for spittlebug eggs in pastures of Brachiaria decumbens.$h[electronic resource]
260 $c1984
520 $aA sampling study of spittlebug eggs in pastures of Brachiaria decumbens was conducted by using a sample unit of 15 x 15 cm. The number os samples required for a certain level of precision was inversely proportional to population density. A crude estimate of number of samples necessary for 10, 15 and 20% of precision were 133,59 and 33, respectively. A study of sampling variation showed that differences between plots were much more important than the block differences; therefore plot to plot variation must be considered while sampling spittlebug eggs. The distribution pattern of numbers of eggs per 225 cm2 of pasture fitted the negative binomial series. The sequential sampling plan presented here would reduce the sampling time over the conventional (fixed sample numbers) sampling.
650 $aCercopidae
650 $aDeois Flavopicta
650 $aZulia Entreriana
653 $aAmostragem sequencial
653 $aEficiencia da amostragem
653 $aSampling efficiency
653 $aSequential sampling
700 1 $aMARTIN, P. B.
700 1 $aVALERIO, J. R.
700 1 $aKOLLER, W. W.
700 1 $aSOUZA FILHO, J. A. G. de
700 1 $aSILVA, A. A. da
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.19, n.8, p. 935-941, ago. 1984.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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