Optimum plot size for evaluating the mass and diameter of broccoli heads/Tamanho otimo de parcela para avaliacao da massa e diametro de cabecas de brocolis

The objective of this study was to determine the optimum plot size by sampling the total area and the fractions' areas in order to evaluate the mass and diameter of broccoli heads. In the field, 27 rows of hybrid BRO 68® were demarcated. Each plant was considered as an experimental basic unit (...

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Bibliographic Details
Published in:Ciência rural 2016-03, p.447
Main Authors: Brum, Betania, Brandelero, Fernanda Daniela, de Oliveira Vargas, Thiago, Storck, Lindolfo, Zanini, Pedro Paulo Goncalves
Format: Article
Language:Spanish
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Summary:The objective of this study was to determine the optimum plot size by sampling the total area and the fractions' areas in order to evaluate the mass and diameter of broccoli heads. In the field, 27 rows of hybrid BRO 68® were demarcated. Each plant was considered as an experimental basic unit (UEB). For analysis purposes, each row was regarded as being one blank test on 100 UEB. For the results of 27 rows yielded values: minimum, maximum, average, standard deviation, CV, confidence interval, the sample size (number of rows) to estimate Xo and to estimate the mean. The optimum plot size to evaluate the mass and diameter of broccoli heads equals five basic experimental units (plants). Key words: Brassica oleracea var. italica, spatial variation, sampling, experimental design. O objetivo deste trabalho foi determinar o tamanho otimo de parcela (Xo), por amostragem na area total e nas fracoes de areas, a fim de avaliar a massa e o diametro de cabecas de brocolis. Em campo, foram demarcadas 27 filas do hibrido BRO 68®. Cada planta foi considerada como sendo uma unidade experimental basica (UEB). Para fins de analise, cada fila foi considerada como sendo um ensaio em branco com 100 UEB. Para os resultados das 27 filas, obtiveram-se os valores: minimo, maximo, media, desvio padrao, CV, intervalo de confianca, o tamanho de amostra (numero de filas) para estimar o Xo e para estimar a media. O tamanho otimo de parcela para avaliar a massa e diametro de cabecas de brocolis e igual a cinco unidades experimentais basicas (plantas). Palavras-chave: Brassica oleracea var. italica, variacao espacial, amostragem, planejamento experimental.
ISSN:0103-8478
DOI:10.1590/0103-8478cr20150236