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Registros recuperados : 11 | |
2. | | TRUTA, A. A. C.; SOUZA, A. R. R.; NASCIMENTO, A. V. S. do; PEREIRA, R. de C.; PINTO, C. M. F.; BROMMONSCHENKEL, S. H.; CARVALHO, M. G. de; ZERBINI, F. M. Identidade e propriedades de isolados de potyvírus provenientes de Capsicum spp. Fitopatologia Brasileira, Brasilia, v. 29, n. 2, p. 160-168, mar./abr. 2004. Biblioteca(s): Embrapa Hortaliças. |
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3. | | NILAKHE, S. S.; HEWITT, G. B.; PASCHOAL, G. O.; BUAINAIN, C. M.; SOUZA, A. R. R. Influence of collection method and collection time on survival, sexual proportion and number of spittlebug adults captured. Pesquisa Agropecuaria Brasileira, Brasilia, v.22, n.9/10, p.929-934 set./out.1987. Biblioteca(s): Embrapa Gado de Corte; Embrapa Unidades Centrais. |
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4. | | NILAKHE, S. S.; PASCHOAL, G. O.; SILVA, A. A. da; BUAINAIN, C. M.; SOUZA, A. R. R. Spittlebug eggs: comparasion of sampling efficiency of sample units of different sizes. Pesquisa Agropecuaria Brasileira, Brasilia, v.20, n.11, p.1245-1250, nov. 1985. Biblioteca(s): Embrapa Unidades Centrais. |
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5. | | NILAKHE, S. S.; PASCHOAL, G. O.; SILVA, A. A. da; BUAINAIN, C. M.; SOUZA, A R. R. Spittlebug eggs: comparison of sampling efficiency of sample units of different sizes. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 20, n. 11, p. 1245-1250, nov. 1985. Título em português: Ovos de cigarrinhas-das-pastagens: comparação de eficiência de amostragem em relação ao tamanho das amostras. Biblioteca(s): Embrapa Gado de Corte. |
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Registros recuperados : 11 | |
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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
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
13/05/1998 |
Data da última atualização: |
13/05/1998 |
Autoria: |
NILAKHE, S. S.; PASCHOAL, G. O.; SILVA, A. A. da; BUAINAIN, C. M.; SOUZA, A. R. R. |
Afiliação: |
CNPGC. |
Título: |
Spittlebug eggs: comparasion of sampling efficiency of sample units of different sizes. |
Ano de publicação: |
1985 |
Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.20, n.11, p.1245-1250, nov. 1985. |
Idioma: |
Inglês |
Conteúdo: |
The sampling efficiency of three sample units was compared to determine spittlebug egg densities in pastures of Brachiaria decumbens Stapf. To obtain the same level of precision, the total pasture area to be examined increased by 1.5 times when size of the sample unit was increased from 75 to 150 cm2, and by 2.5 times when it was increased to 225 cm2. Using the 75 cm2 unit. the number of samples necessary for 10%, 15% and 20% levels of precision were estimated to be 170,82 and 48, respectively. The distribution pattern of egg counts per 75 cm2 of the pasture, fitted the negative binomial series. A study of sampling variation within 1 ha pastures, showed that differences between blocks, of plots within blocks were significant only in about 20% instances. Nevertheless, choosing of well-distributed sampling sites within the sampling area was suggested. |
Thesagro: |
Brachiaria Decumbens; Deois Flavopicta; Pastagem; Zulia Entreriana. |
Thesaurus NAL: |
Cercopidae; pastures. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01560naa a2200241 a 4500 001 1104624 005 1998-05-13 008 1985 bl uuuu u00u1 u #d 100 1 $aNILAKHE, S. S. 245 $aSpittlebug eggs$bcomparasion of sampling efficiency of sample units of different sizes. 260 $c1985 520 $aThe sampling efficiency of three sample units was compared to determine spittlebug egg densities in pastures of Brachiaria decumbens Stapf. To obtain the same level of precision, the total pasture area to be examined increased by 1.5 times when size of the sample unit was increased from 75 to 150 cm2, and by 2.5 times when it was increased to 225 cm2. Using the 75 cm2 unit. the number of samples necessary for 10%, 15% and 20% levels of precision were estimated to be 170,82 and 48, respectively. The distribution pattern of egg counts per 75 cm2 of the pasture, fitted the negative binomial series. A study of sampling variation within 1 ha pastures, showed that differences between blocks, of plots within blocks were significant only in about 20% instances. Nevertheless, choosing of well-distributed sampling sites within the sampling area was suggested. 650 $aCercopidae 650 $apastures 650 $aBrachiaria Decumbens 650 $aDeois Flavopicta 650 $aPastagem 650 $aZulia Entreriana 700 1 $aPASCHOAL, G. O. 700 1 $aSILVA, A. A. da 700 1 $aBUAINAIN, C. M. 700 1 $aSOUZA, A. R. R. 773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.20, n.11, p.1245-1250, nov. 1985.
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