|
|
Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Ocidental; Embrapa Mandioca e Fruticultura. |
Data corrente: |
27/04/2000 |
Data da última atualização: |
27/04/2000 |
Autoria: |
HATHEWAY, W. H.; WILLIAMS, E. J. |
Afiliação: |
Rockefeller Foundation, Agricultural Field Staff, and the Institute of Statistics Raleigh, North Carolina, U.S.A. |
Título: |
Efficient estimation of the relationship between plot size and the variability of crop yields. |
Ano de publicação: |
1958 |
Fonte/Imprenta: |
Biometrics, p.207-222, 1958. |
Idioma: |
Inglês |
Conteúdo: |
The optimum size of plot in field experimentation depends on the relationship between fixed costs and costs varying with number of units, and on soil variability. Perhaps the most useful measure of soil hetero geneity yet devised is that of Smith [1938], who showed empirically that the logarithm of the variance between plots of a given size was linearly related to the logarithm of the size of the plot. In the presentpaper we consider only the relationship between size and variability. The objects of the paper are, firstly, to show efficient estimates of the constants in this relationship may be determined, and secondly, to illustrate a general method of determining efficient linear estimates when the data are, as in the present instance, correlated and of unequal variability. |
Palavras-Chave: |
Culturas. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01191naa a2200145 a 4500 001 1648770 005 2000-04-27 008 1958 bl --- 0-- u #d 100 1 $aHATHEWAY, W. H. 245 $aEfficient estimation of the relationship between plot size and the variability of crop yields. 260 $c1958 520 $aThe optimum size of plot in field experimentation depends on the relationship between fixed costs and costs varying with number of units, and on soil variability. Perhaps the most useful measure of soil hetero geneity yet devised is that of Smith [1938], who showed empirically that the logarithm of the variance between plots of a given size was linearly related to the logarithm of the size of the plot. In the presentpaper we consider only the relationship between size and variability. The objects of the paper are, firstly, to show efficient estimates of the constants in this relationship may be determined, and secondly, to illustrate a general method of determining efficient linear estimates when the data are, as in the present instance, correlated and of unequal variability. 653 $aCulturas 700 1 $aWILLIAMS, E. J. 773 $tBiometrics, p.207-222, 1958.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registros recuperados : 28 | |
3. |  | CASTRO, M. T.; MONTAVÃO, S. C. L.; CUNHA, S. B. Z.; MONNERAT, R. G. Aphis craccivora Koch, 1854 (Hemiptera: Aphididae) infesting mahogany seedlings (Swietenia macrophylla King, Meliaceae) and scarlet jade vines (Mucuna bennettii F. Muell., Fabaceae). Entomological Communications, v. 2, ec02011, 2020.Tipo: Nota Técnica/Nota Científica |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
|    |
10. |  | CASTRO, M. T. de; MONTALVÃO, S. C. L.; MONNERAT, R. G. Control of mahogany shoot borer, Hypsipyla grandella (Lepidoptera: Pyralidae), with Bacillus thuringiensis in a systemic way. Nativa, Sinop, v. 7, n. 4, p. 426-430, jul./ago. 2019.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
|    |
16. |  | CASTRO, M. T. de; MONTALVÃO, S. C. L.; WOLFF, V. R. dos S.; MONNERAT, R. G. Occurrence of greedy scale, Hemiberlesia rapax (Comstock) (Hemiptera: Diaspididae), on mahogany in Brazil. Pesquisa Agropecuária Gaúcha, v. 26, n. 1, p. 1-6, 2020.Tipo: Nota Técnica/Nota Científica |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
|    |
19. |  | CASTRO, M. T.; CRAVEIRO, S. R.; RIBEIRO, Z. M. de A.; CASTRO, M. E. B. de. Testes de infectividade de isolados virais em larvas de Spodoptera frugiperda E Anticarsia gemmatalis. In: ENCONTRO DO TALENTO ESTUDANTIL DA EMBRAPA RECURSOS GENÉTICOS E BIOTECNOLOGIA, 15., 2010, Brasília, DF. Anais: resumos dos trabalhos. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2010. Resumo 091. p. 130Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
|   |
20. |  | CASTRO, M. T. de; MONTALVÃO, S. C. L.; PONTES, R. G. M. S. de; QUEIROZ, D. L. de. Cydianerus latruncularius (Coleoptera: Curculionidae) damaging trumpet trees leaves (Handroanthus spp., Bignoniaceae) in Brasília, Brazil. Pesquisa Florestal Brasileira, Colombo, v. 41, e202002097, 2021. 4 p. Nota científica. Na publicação: Rose Gomes Monnerat.Tipo: Nota Técnica/Nota Científica |
Biblioteca(s): Embrapa Florestas; Embrapa Recursos Genéticos e Biotecnologia. |
|    |
Registros recuperados : 28 | |
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|