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| 4. |  | BONONI, L.; TAKETANI, R. G.; SOUZA, D. T.; MOITINHO, M. A.; KAVAMURA, V. N.; MELO, I. S. de. Higher phylogenetic diversity prevents loss of functional diversity caused by successive drying and rewetting cycles. Antonie van Leeuwenhoek, v. 111, n. 7, p. 1033-1045, 2018.| Biblioteca(s): Embrapa Meio Ambiente. |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria Tropical; Embrapa Unidades Centrais. |
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Data corrente: |
31/05/2019 |
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Data da última atualização: |
06/12/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
ROSSETTI, A. G.; VIDAL NETO, F. das C.; BARROS, L. de M. |
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Afiliação: |
ADROALDO GUIMARAES ROSSETTI, CNPAT; FRANCISCO DAS CHAGAS VIDAL NETO, CNPAT; LEVI DE MOURA BARROS, CNPAT. |
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Título: |
Sampling of cashew nuts as an aid to research for the genetic improvement of cashew tree. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 54, e00962, 2019. |
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Idioma: |
Português |
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Conteúdo: |
The objective of this work was to estimate sample sizes of cashew (Anacardium occidentale) nuts as an aid to the genetic improvement of cashew tree. Nuts were separated by size: nuts < 17 mm were classified as size 1 (S1); 17 mm ≤ nuts < 19 mm, size 2 (S2); 19 mm ≤ nuts < 23 mm, size 3 (S3); 23 mm ≤ nuts < 25 mm, size 4 (S4); and nuts ≥ 25 mm, size 5 (S5). Sizing the sample for each stratum depends on the variance of nut size and on the error level B allowed for either the estimates or the desired precision in the results. The sample size will be larger the greater the variance of the stratum, the lower the error level allowed for the estimates, or the greater the precision desired in the results. For an error B = 0.2 g, the sample sizes of the S5, S4, and S3 strata were n5 = 42 nuts, n4 = 30 nuts, and n3 = 19 nuts, respectively. In the S5 and S4 strata, with better nut classifications, the average weight was 12.71 and 9.76 g, respectively. The Sm stratum ? formed by the mixture of nuts of several sizes ? should not be used as a parameter in this context due to its great variability, which is far larger than that of the other strata. Stratified sampling composed of six strata (S1, S2, ..., S5, Sm) is effective for estimating different sizes of nut samples. |
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Palavras-Chave: |
Amostragem aleatória estratificada uniforme; Precisão de amostragem; Sample size; Sampling precision; Tamanho de amostra; Uniform stratified random sampling. |
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Thesagro: |
Amostragem; Anacardium Occidentale. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/205705/1/ART19034.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/198023/1/Sampling-of-cashew-nuts.pdf
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Marc: |
LEADER 02103naa a2200241 a 4500
001 2115368
005 2019-12-06
008 2019 bl uuuu u00u1 u #d
100 1 $aROSSETTI, A. G.
245 $aSampling of cashew nuts as an aid to research for the genetic improvement of cashew tree.$h[electronic resource]
260 $c2019
520 $aThe objective of this work was to estimate sample sizes of cashew (Anacardium occidentale) nuts as an aid to the genetic improvement of cashew tree. Nuts were separated by size: nuts < 17 mm were classified as size 1 (S1); 17 mm ≤ nuts < 19 mm, size 2 (S2); 19 mm ≤ nuts < 23 mm, size 3 (S3); 23 mm ≤ nuts < 25 mm, size 4 (S4); and nuts ≥ 25 mm, size 5 (S5). Sizing the sample for each stratum depends on the variance of nut size and on the error level B allowed for either the estimates or the desired precision in the results. The sample size will be larger the greater the variance of the stratum, the lower the error level allowed for the estimates, or the greater the precision desired in the results. For an error B = 0.2 g, the sample sizes of the S5, S4, and S3 strata were n5 = 42 nuts, n4 = 30 nuts, and n3 = 19 nuts, respectively. In the S5 and S4 strata, with better nut classifications, the average weight was 12.71 and 9.76 g, respectively. The Sm stratum ? formed by the mixture of nuts of several sizes ? should not be used as a parameter in this context due to its great variability, which is far larger than that of the other strata. Stratified sampling composed of six strata (S1, S2, ..., S5, Sm) is effective for estimating different sizes of nut samples.
650 $aAmostragem
650 $aAnacardium Occidentale
653 $aAmostragem aleatória estratificada uniforme
653 $aPrecisão de amostragem
653 $aSample size
653 $aSampling precision
653 $aTamanho de amostra
653 $aUniform stratified random sampling
700 1 $aVIDAL NETO, F. das C.
700 1 $aBARROS, L. de M.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 54, e00962, 2019.
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Embrapa Agroindústria Tropical (CNPAT) |
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