Plot size and number of repetitions in vetch

Filho, Alberto Cargnelutti; Alves, Bruna Mendonça; Follmann, Diego Nicolau; de, Cláudia Marques; Schabarum, Denison Esequiel; Stefanelo, Lucas da Silva; Wartha, Cleiton Antônio; Kleinpaul, Jéssica Andiara; Chaves, Gabriela Görgen; Uliana, Daniela Barbieri; Pezzini, Rafael Vieira

doi:10.1590/1678-4499.084

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…As such, a plot size of up to ten BEU (10 m 2 ) is suggested for evaluating the fresh weight of single-crop or intercropped black oats and vetch, as the gain in experimental precision (a decrease in VU (X) ) with the increase in plot size starting from ten BEU was negligible. This value of 10 m 2 is relatively greater than the plot size of 4.14 m 2 determined to evaluate the fresh weight of black oats (CARGNELUTTI FILHO et al, 2014a) and of 4.52 m 2 to assess the fresh weight of vetch (CARGNELUTTI FILHO et al, 2017). It should be considered that these authors used another methodology, i.e.…”

Section: Resultsmentioning

confidence: 95%

“…Although, plot size was investigated using the maximum curvature of the model of the coefficient of variation (PARANAÍBA et al, 2009) in the single cultivation of black oats (CARGNELUTTI FILHO et al, 2014a) and vetch (CARGNELUTTI FILHO et al, 2017), it is assumed that intercropping, commonly used with ground cover plants, can generate distinct patterns of experimental design, and that the use of this approach can combine information for planning experiments with these two ground cover species.…”

Section: Crop Productionmentioning

confidence: 99%

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Optimal plot size for experiments with black oats and the common vetch

et al. 2020

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The aim of this study was to determine the optimal plot size for evaluating the fresh weight of black oats (Avena strigosa Schreb) and the common vetch (Vicia sativa L.) in scenarios comprising combinations of the number of treatments, number of replications and levels of precision. Fifteen uniformity trials were conducted with single-crop and intercropped black oats and vetch. Fresh weight was evaluated in 540 basic experimental units (BEU), each of 1 m × 1 m (36 BEU per trial). The Smith index of soil heterogeneity (1938) was estimated. Plot size was determined using the HATHEWAY method (1961), in scenarios comprising combinations of i treatments (i = 5, 10, 15 and 20), r replications (r = 3, 4, 5, 6, 7 and 8) and d levels of precision (d = 2%, 4%, 6%, 8%, 10%, 12%, 14%, 16%, 18% and 20%). To evaluate the fresh weight of monocropped or intercropped black oats and vetch in a completely randomized or randomized complete block design, with from 5 to 20 treatments and five replications, plots of 10 m2 are sufficient to identify, at a probability of 0.05, significant differences between treatments of 10% of the overall mean value of the experiment.

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Section: Resultsmentioning

confidence: 95%

Section: Crop Productionmentioning

confidence: 99%

Optimal plot size for experiments with black oats and the common vetch

et al. 2020

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“…Plot size has been investigated in sole cropping of black oat (CARGNELUTTI FILHO et al, 2014a), common vetch (CARGNELUTTI FILHO et al, 2017) and forage turnip (CARGNELUTTI FILHO et al, 2011, 2016, through the method of maximum curvature of the coefficient of variation model (PARANAÍBA; FERREIRA; MORAIS, 2009a) and also in forage turnip (CARGNELUTTI FILHO et al, 2014b) and black oat with common vetch (CARGNELUTTI FILHO et al, 2020) through the methodologies of Smith (1938) and Hatheway (1961).…”

Section: Introductionmentioning

confidence: 99%

Methods for Estimating the Optimal Plot Size for Black Oat, Common Vetch and Forage Turnip Intercropping

et al. 2022

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The objective of this work was to compare three methods of estimating the optimal plot size to evaluate the fresh matter in black oat (Avena strigosa Schreb), common vetch (Vicia sativa L.) and forage turnip (Raphanus sativus L.) intercropping. Six uniformity trials with black oat, common vetch and forage turnip intercropping were carried out. Three trials were evaluated at 84 days after sowing and the other three trials at 119 days after sowing. The fresh matter was evaluated in 216 basic experimental units (36 per trial) of 1 m × 1 m. The optimal plot size was determined using the methods of modified maximum curvature, linear response and plateau model and quadratic response and plateau model. The optimal plot size differs between the methods and decreases in the following order: quadratic response and plateau model (15.13 m2), linear response and plateau model (8.24 m2) and modified maximum curvature (5.62 m2). The optimal plot size for assessing the fresh matter of black oat, common vetch and forage turnip, grown in intercropping, is 15.13 m2. This size can be used as a reference for future experiments.

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“…O tamanho ótimo de parcela e/ou o número de repetições têm sido investigados para culturas agrícolas, tais como a alfafa (Freitas et al, 2011), o arroz (Masood & Raza, 2012), trigo (Al-Feel & Abdulaah, 2013), aveia-preta (Cargnelutti Filho et al, 2014), ervilha forrageira (Cargnelutti Filho et al, 2015), milheto (Burin et al, 2016), feijão guandu (Santos et al, 2016), aveia branca (Lavezo et al, 2017), crotalária juncea (Facco et al, 2017), ervilhaca (Cargnelutti Filho et al, 2017) e centeio (Chaves et al, 2018).…”

Section: Introductionunclassified

Tamanho de parcela e número de repetições para avaliação de caracteres vegetativos em centeio

Chaves

Filho

Carini

et al. 2018

Agraria

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RESUMO: Os objetivos deste trabalho foram determinar o tamanho ótimo de parcela (Xo) e o número de repetições para avaliar as massas de matéria fresca e seca de centeio (Secale cereale L.), e investigar a variação do Xo entre duas cultivares e cinco épocas de semeadura. Foram conduzidos 30 ensaios de uniformidade. Cada ensaio com dimensões de 6 × 4 m foi dividido em 24 unidades experimentais básicas (UEB) de 1 × 1 m. Foram avaliadas as massas de matéria fresca e seca de centeio nas 720 UEB. O Xo foi determinado pelo método da curvatura máxima do modelo do coeficiente de variação. O número de repetições foi determinado em cenários formados por combinações de tratamentos, delineamentos experimentais e níveis de precisão. Os tamanhos ótimos de parcela para avaliar as massas de matéria fresca e seca de centeio são, respectivamente, 3,43 e 3,82 m 2. Seis repetições são suficientes para avaliar as massas de matéria fresca e seca, em delineamentos inteiramente casualizado e blocos ao acaso com até 50 tratamentos, e possibilitam obter diferença mínima significativa menor ou igual a 20% da média do experimento. Palavras-chave: cultura de cobertura de solo; dimensionamento experimental; ensaio de uniformidade

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Plot size and number of repetitions in vetch

Cited by 6 publications

References 7 publications

Optimal plot size for experiments with black oats and the common vetch

Optimal plot size for experiments with black oats and the common vetch

Methods for Estimating the Optimal Plot Size for Black Oat, Common Vetch and Forage Turnip Intercropping

Tamanho de parcela e número de repetições para avaliação de caracteres vegetativos em centeio

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