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| Toebe,Marcos; Machado,Letícia Nunes; Tartaglia,Francieli de Lima; Carvalho,Juliana Oliveira de; Bandeira,Cirineu Tolfo; Cargnelutti Filho,Alberto. |
| Abstract: The objective of this work was to determine the necessary sample size to estimate Pearson’s linear correlation coefficients of four species of crotalaria at precision levels. The experiment was carried out with Crotalaria juncea, Crotalaria spectabilis, Crotalaria breviflora, and Crotalaria ochroleuca, during the 2014/2015 crop year. Eight crotalaria traits were evaluated in 1,000 randomly collected pods per species. For each species, the correlation coefficients were estimated for the 28 pairs of traits, and the sample size necessary to estimate the correlation coefficients was determined at four precision levels [0.10, 0.20, 0.30, and 0.40 amplitudes of the 95% (CI95%) confidence interval] by resampling with replacement. The sample size varies... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crotalaria; Linear relationships; Resampling; Sample precision. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102002 |
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| Toebe,Marcos; Bandeira,Cirineu Tolfo; Fortes,Sabrina Kitina Giordano; Carvalho,Juliana Oliveira de; Tartaglia,Francieli de Lima; Tambara,André Limana; Melo,Patricia Jesus de. |
| RESUMO Os objetivos deste trabalho foram determinar o tamanho de amostra necessário para a estimação da média de caracteres e avaliar as relações lineares existentes entre caracteres de plantas de Crotalaria spectabilis. Foi conduzido um experimento com C. spectabilis na safra 2014/2015, sendo os seguintes caracteres avaliados em 100 plantas: altura da planta (AP), número de ramos produtivos (NRP), massa seca da parte aérea (MSPA), massa seca de vagens (MSVG), número de vagens (NVG), peso médio de cada vagem (PMVG), número de sementes (NS), número médio de sementes por vagem (NSVG), massa de cem grãos (MCG) e peso total de sementes (PTS). Foram calculadas medidas de tendência central, de dispersão e de distribuição, foi verificada a normalidade dos dados e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Precisão experimental; Planejamento experimental; Análise de trilha; Seleção indireta. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100045 |
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| Toebe,Marcos; Cargnelutti Filho,Alberto; Carvalho,Juliana Oliveira de; Tartaglia,Francieli de Lima; Cortes,Alessandra Ferreira; Mello,Anderson Chuquel; Melo,Patrícia Jesus de. |
| ABSTRACT: The objective of this research was to determine the optimal plot size and the number of replications to evaluate the fresh matter of ryegrass sown to haul. Twenty uniformity trials were conducted, each trial with 16 basic experimental units (BEU) of 0.5 m2. At 117, 118 and 119 days after sowing, the fresh matter of ryegrass in the BEUs of 5, 10 and 5 uniformity trials, respectively, were determined. The optimal plot size was determined by the maximum curvature method of the variation coefficient model. Next, the replications number was determined in scenarios formed by combinations of i treatments (i = 3, 4, ... 50) and d minimum differences between means of treatments to be detected as significant at 5% of probability by the Tukey test,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lolium multiflorum L.; Uniformity trials; Experiment planning; Maximum curvature method.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000100204 |
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