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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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| Cargnelutti Filho,Alberto; Lavezo,André; Bem,Cláudia Marques de; Carini,Fernanda; Schabarum,Denison Esequiel; Bandeira,Cirineu Tolfo; Kleinpaul,Jéssica Andiara; Wartha,Cleiton Antonio; Silveira,Daniela Lixinski; Pezzini,Rafael Vieira; Thomasi,Rosana Marzari; Simões,Fernanda Martins; Neu,Ismael Mario Márcio. |
| ABSTRACT The aim of this study was to determine the optimum plot size to evaluate the fresh matter of aerial part of dwarf pigeon pea (Cajanus cajan (L.) Millsp), cultivar IAPAR 43 (Aratã), in scenarios formed by combinations of numbers of treatments, number of replications, and precision levels. The fresh matter of aerial part was weighed on basic experimental units of 1 m × 1 m in three uniformity trials with size of 24 m × 12 m (288 m2 in each trial). The soil heterogeneity index of Smith was estimated. Also, the optimum plot size was determined by Hatheway’s method in scenarios formed by combinations of i treatments (i = 5, 10, 15, and 20), r replications (r = 3, 4, 5, 6, 7 8, 9, and 10), and d precision levels (d = 5%, 10%, 15%, 20%, 25%, and 30%). In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cajanus cajan L.; Fresh matter of aerial part; Uniformity trial; Experimental design; Cover crops. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200212 |
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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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| Bandeira,Cirineu Tolfo; Fortes,Sabrina Kitina Giordano; Toebe,Marcos; Saifert,Luciano; Giacobbo,Clevison Luiz; Welter,Leocir José. |
| ABSTRACT: The aim of this research was to determine the sample size needed to estimate the average of wild passion fruit ( Passiflora caerulea ) traits. It was collected randomly, 133, 99 and 133 fruit of wild passion fruit in 30, 21 and 29 plants, located respectively, in the cities of São Borja, Itaqui and Uruguaiana, on the west border of Rio Grande do Sul, Brazil, totaling 365 fruits harvested in 80 plants. In each fruit were measured ten traits: width, length, fruit, skin, and pulp weight, pulp yield, luminosity and tone of skin and pulp. Then, central tendency, dispersion and distribution measures were calculated and the normality of the data checked. After, it was determined the sample size needed to estimate the average for each character, assuming... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wild passion fruit; Experimental precision; Experimental planning. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001001729 |
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