Sampling plants for spittlebug eggs in pastures of Brachiaria decumbens.

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...

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Detalles Bibliográficos
Autores: NILAKHE, S. S., MARTIN, P. B., VALERIO, J. R., KOLLER, W. W., SOUZA FILHO, J. A. G. de, SILVA, A. A. da
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1984
País:Brasil
Institución:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
Repositorio:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Idioma:inglés
OAI Identifier:oai:www.alice.cnptia.embrapa.br:doc/1113556
Acceso en línea:http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113556
Access Level:acceso abierto
Palabra clave:Sampling efficiency
Sequential sampling
Amostragem sequencial
Eficiencia da amostragem
Deois Flavopicta
Zulia Entreriana
Cercopidae
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spelling Sampling plants for spittlebug eggs in pastures of Brachiaria decumbens.Sampling efficiencySequential samplingAmostragem sequencialEficiencia da amostragemDeois FlavopictaZulia EntrerianaCercopidaeA 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.Título em português: Planos de amostragem de ovos de cigarrinhas em pastagens de Brachiaria decumbens.Consultor IICA; Consultor IICA; JOSE RAUL VALERIO, CNPGC; WILSON WERNER KOLLER, CNPGC; EMPAER; EMPAER.2019-10-28T18:07:20Z2019-10-28T18:07:20Z2019-10-2819842019-10-28T18:07:20Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlePesquisa Agropecuária Brasileira, Brasília, DF, v. 19, n. 8, p. 935-941, ago. 1984.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113556enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPANILAKHE, S. S.MARTIN, P. B.VALERIO, J. R.KOLLER, W. W.SOUZA FILHO, J. A. G. deSILVA, A. A. da2019-10-28T18:07:25Zoai:www.alice.cnptia.embrapa.br:doc/1113556Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542019-10-28T18:07:25Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Sampling plants for spittlebug eggs in pastures of Brachiaria decumbens.
title Sampling plants for spittlebug eggs in pastures of Brachiaria decumbens.
spellingShingle Sampling plants for spittlebug eggs in pastures of Brachiaria decumbens.
NILAKHE, S. S.
Sampling efficiency
Sequential sampling
Amostragem sequencial
Eficiencia da amostragem
Deois Flavopicta
Zulia Entreriana
Cercopidae
title_short Sampling plants for spittlebug eggs in pastures of Brachiaria decumbens.
title_full Sampling plants for spittlebug eggs in pastures of Brachiaria decumbens.
title_fullStr Sampling plants for spittlebug eggs in pastures of Brachiaria decumbens.
title_full_unstemmed Sampling plants for spittlebug eggs in pastures of Brachiaria decumbens.
title_sort Sampling plants for spittlebug eggs in pastures of Brachiaria decumbens.
dc.creator.none.fl_str_mv NILAKHE, S. S.
MARTIN, P. B.
VALERIO, J. R.
KOLLER, W. W.
SOUZA FILHO, J. A. G. de
SILVA, A. A. da
author NILAKHE, S. S.
author_facet NILAKHE, S. S.
MARTIN, P. B.
VALERIO, J. R.
KOLLER, W. W.
SOUZA FILHO, J. A. G. de
SILVA, A. A. da
author_role author
author2 MARTIN, P. B.
VALERIO, J. R.
KOLLER, W. W.
SOUZA FILHO, J. A. G. de
SILVA, A. A. da
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Consultor IICA; Consultor IICA; JOSE RAUL VALERIO, CNPGC; WILSON WERNER KOLLER, CNPGC; EMPAER; EMPAER.
dc.subject.por.fl_str_mv Sampling efficiency
Sequential sampling
Amostragem sequencial
Eficiencia da amostragem
Deois Flavopicta
Zulia Entreriana
Cercopidae
topic Sampling efficiency
Sequential sampling
Amostragem sequencial
Eficiencia da amostragem
Deois Flavopicta
Zulia Entreriana
Cercopidae
description 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.
publishDate 1984
dc.date.none.fl_str_mv 1984
2019-10-28T18:07:20Z
2019-10-28T18:07:20Z
2019-10-28
2019-10-28T18:07:20Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Pesquisa Agropecuária Brasileira, Brasília, DF, v. 19, n. 8, p. 935-941, ago. 1984.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113556
identifier_str_mv Pesquisa Agropecuária Brasileira, Brasília, DF, v. 19, n. 8, p. 935-941, ago. 1984.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113556
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
collection Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv cg-riaa@embrapa.br
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score 15.301603

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