Tamanho de amostra para experimentos com feijão-de-vagem em diferentes ambientes

Haesbaert, Fernando Machado; Santos, Daniel; Lúcio, Alessandro Dal’Col; Benz, Vilson; Antonello, Bruno Ioppi

doi:10.1590/s0103-84782011000100007

Cited by 20 publications

(14 citation statements)

References 6 publications

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“…Peixoto and Cardoso (2016) state that this crop is not difficult to establish when grown under an organic system. The green bean is a vegetable that differs from the common bean only at the podharvesting stage, which takes place when the pods are still immature and can be used for food, both industrially and in natura (HAESBAERT et al, 2011). Additionally, the pods are larger and have a low fiber content (PEIXOTO; CARDOSO, 2016).…”

Section: Introductionmentioning

confidence: 99%

Productivity in seeds of the green bean produced under conventional and organic systems

Portal

Nascimento

Vidal³

et al. 2018

SCA

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Two experiments were carried out during 2016 at the Anápolis Experimental Station of EMATER in the State of Goiás, with the aim of studying the yield of seeds of 18 strains and two indeterminate cultivars of the green bean, one experiment under a conventional system and the other under an organic system. A randomized block experimental design was used, with twenty treatments and three replications, to evaluate the mean number of seeds per pod (NSP), 100-seed weight (100SW) and productivity (PROD). Under the conventional system, the 100SW ranged from 19.3 to 25.0 grams. The highest productivity was achieved with the UEG 0212, UEG 0212, UEG 0712 and UEG 3014 strains, which were superior to the other strains, including the controls. Under the organic system, there was a range of 6.66 to 8.33 for the NSP, while for the 100SW, the range was from 23 to 32 grams. The UEG 0212, UEG 1012, UEG 2014 and UEG 3014 strains, all with cylindrical pods and white seeds, can be used as alternatives for planting, being superior to the 'Favorito' cultivar and equal to the 'Macarrão Bragança' cultivar, whereas UEG 1112 and UEG 0714, with cylindrical pods and cream-colored seeds, can be used as dual-adapted cultivars, with green pods and dry grain that can be used as end-of-cycle pods if there are defects that are not accepted by the market.

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Section: Introductionmentioning

confidence: 99%

Productivity in seeds of the green bean produced under conventional and organic systems

Portal

Nascimento

Vidal³

et al. 2018

SCA

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“…The two cultivation periods produced similar behavioral results in all three environments in that there were more non-random lines as the size of the basic unit decreased. Haesbaert et al (2011), who studied snap bean, suggested that there were disadvantages in analyzing the crops individually instead of as a whole because with groupings there is an increase in the average and, consequently, a reduction of the variation coefficient (VC%), which leads to lower variability and higher precision. This corroborates with what was observed in this study, which suggests that besides the use of larger experimental units, the experiment should also contain groupings that represent more intensive harvests, since these groupings tend to not show any tendencies and have less crop row variability.…”

Section: Resultsmentioning

confidence: 99%

Producing randomness between plots in pepper and snap bean experiments

Benz

Lúcio

2016

SCA

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It is important to know the production variability among experimental plots in a protected environment because this information reduces error and increases the reliability of the results. Therefore, the objective of this study was to characterize the spatial independence of fruit yield between plots of peppers and snap beans. Data on production uniformity were gathered from trials performed at the Department of Plant Science, Federal University of Santa Maria. Different plots sizes were created according to the number of plants in the crop row. To verify the randomness of the data distribution, we applied a sequence test between the plots within one line for individual and combined harvests. The use of ten plants per plot in experiments with peppers led to no randomness within the lines during the production of fruit fresh biomass. In experiments with snap beans conducted in a greenhouse, a plastic tunnel and by unprotected cultivation using plots with six or more basic units, 12 or more plants per plot produced random fresh biomass data for fruits within the crop row. Key words: Capsicum annuum. Phaseolus vulgaris L. Run test. Experimental planning. Experimental precision. ResumoO conhecimento da variabilidade da produção entre as parcelas experimentais no ambiente protegido se faz necessário, pois possibilita a redução do erro aumentando a confiabilidade nos resultados. Assim sendo, o objetivo deste estudo foi caracterizar a independência espacial das produções de frutos entre parcelas de pimentão e feijão-de-vagem. Foram utilizados dados de produção de ensaios de uniformidade realizados no Departamento de Fitotecnia da Universidade Federal de Santa Maria. Com os valores da produção individual foram simulados diferentes tamanhos de parcelas conforme o número de plantas na linha de cultivo. Para verificar a aleatoriedade da distribuição dos dados, foi aplicado o teste de sequências entre parcelas dentro da linha em colheitas individuais e agrupadas. O uso de dez plantas por parcela em experimentos com pimentão é suficiente para que não haja linhas com falta de aleatoriedade da produção de fitomassa fresca de frutos. Em experimentos com feijão-de-vagem conduzidos em estufa plástica, túnel plástico e cultivo não protegido o uso de parcelas com seis ou mais unidades básicas, 12 ou mais plantas por parcela, torna aleatória a produção de fitomassa fresca de frutos dentro das linhas de cultivo. Palavras-chave: Capsicum annuum. Phaseolus vulgaris L. Teste de sequências. Planejamento experimental. Precisão experimental.

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“…There are several studies in literature that approach sample size for crops such as rice (Sari et al, 2016), corn (Wartha et al, 2016), soybean (Antúnez et al, 2016); fruits such as apple , mombin (Silva et al, 2016), papaya (Schmildt et al, 2017), peach (Pazolini et al, 2016); and vegetables such as carrot (Silva et al, 2009), lettuce (Santos et al, 2010), green bean (Haesbaert et al, 2011) and tomato (Lucio et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Sample size for evaluation of eggplant and gilo seedlings

Hell¹,

Nascimento²,

Schmildt³

et al. 2017

Afr. J. Agric. Res.

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In horticultural nurseries, it is important to determine the number of plants to be evaluated to obtain reliable inferences about seedling growth. The objective of this study was to determine the sample size required to estimate the mean of quality traits of eggplant and gilo seedlings. The seedlings of both vegetables were produced in expanded polystyrene trays using (8×16) 128 cells each and 40 cm 3 high. At 45 days after sowing, the following traits were evaluated in each seedling of the two crops: leaf number; total leaf area; fresh matter mass of shoot, roots and the total of fresh matter mass of shoot and roots, and Dickson quality index. Measures of central tendency and variability were calculated; the normality of the sample data was tested, and the sample size was calculated. The sample size required is different among the different traits of eggplant and gilo seedlings, and the same trait is different between the two crops. The sample size to evaluate seedlings for an estimation error of 10% of the estimated mean and at a confidence level of 95% is 32 and 26 for eggplant and gilo, respectively.

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Tamanho de amostra para experimentos com feijão-de-vagem em diferentes ambientes

Abstract: RESUMO Com o objetivo de estimar o tamanho de amostra para a fitomassa fresca de vagens de feijão-de-vagem, foram realizados cinco experimentos em branco com a cultivar

Cited by 20 publications

References 6 publications

Productivity in seeds of the green bean produced under conventional and organic systems

Productivity in seeds of the green bean produced under conventional and organic systems

Producing randomness between plots in pepper and snap bean experiments

Sample size for evaluation of eggplant and gilo seedlings

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