Open AccessOptimum plot size for field experiments in sesame
Author(s) -
Janílson Pinheiro de Assis,
Roberto Pequeno de Sousa,
Paulo César Ferreira Linhares,
Roberto Pequeno de Sousa,
Walter Rodrigues,
Joaquim Odilon Pereira,
Robson Pequeno de Sousa,
Aline Carla de Medeiros,
Neurivan Vicente da Silva,
Anderson Bruno Anacleto de Andrade,
Geovanna Alícia Dantas Gomes,
Mateus de Freitas Almeida dos Santos,
Roberto Pequeno de Sousa
Publication year - 2020
Publication title -
australian journal of crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 44
eISSN - 1835-2693
pISSN - 1835-2707
DOI - 10.21475/ajcs.20.14.12.2828
Subject(s) - mathematics , split plot , plot (graphics) , randomized block design , statistics , field experiment , restricted randomization , yield (engineering) , biology , physics , bioinformatics , randomization , clinical trial , thermodynamics
This work aimed to determine the appropriate plot size for field experiments in sesame. We performed a complete randomized block design experiment, using 14 sesame varieties and four replicates. The plots were composed of four rows of 0.8 m long, spaced 0.6 m apart, and 0.1 m between plants. The useful plot area (0.72 m2), which was the two central rows, was divided into 12 basic units with one plant (0.06 m2) each. The measures of sesame production were taken from the useful plot area. The appropriate size of the experimental plot was estimated using the intraclass correlation coefficient method and calculated the detectable difference between treatments. The optimum plot size for evaluation of sesame seed yield was 0.18 m2 (useful area), taking into account the one-row border on the sides. Gains in experimental precision (12%) were occurred with increments in plot size up to eight basic units (0.48 m2), using five replicates and four or more varieties. The increase in the number of replicates and plot size was more efficient than the increase in varieties number to increase the experimental precision