Abstract
ABSTRACT: The hybridization between wheat and rye crops resulted in the triticale crop, which presents rusticity, versatility in animal and human food and possibility of use as a cover plant. The objective of this research was to determine the optimal plot size and the replications number to evaluate the fresh weight of triticale in two evaluation moments. An experiment was carried out with the triticale cultivar IPR111. The experimental area was divided into 48 uniformity trials, each containing 36 basic experimental units of 0.51 m2. The fresh weight was evaluated in 24 uniformity trials at 99 days after sowing (DAS) and in 24 uniformity trials at 127 DAS. The optimal plot size was determined by the method of the maximum curvature of the coefficient of variation and the replications number was determined in scenarios of treatments number and differences between means to be detected as significant by Tukey test. To determine the fresh weight of triticale, the optimal plot size is 3.12 m2, with coefficient of variation of 13.69%. Six replications are sufficient to identify as significant, differences between treatment means of 25% for experiments with up to seven treatments and of 30% for experiments with up to 28 treatments, regardless of the experimental design.
Highlights
RESUMO: O cruzamento das culturas de trigo e centeio resultou na obtenção da cultura do triticale, que apresenta rusticidade, versatilidade na alimentação animal e humana e possibilidade de uso como planta de cobertura
The objective of this research was to determine the optimal plot size and the replications number to evaluate the fresh weight of triticale in two evaluation moments
The experimental area was divided into 48 uniformity trials, each containing 36 basic experimental units of 0.51 m2
Summary
RESUMO: O cruzamento das culturas de trigo e centeio resultou na obtenção da cultura do triticale, que apresenta rusticidade, versatilidade na alimentação animal e humana e possibilidade de uso como planta de cobertura. The objective of this research was to determine the optimal plot size and the replications number to evaluate the fresh weight of triticale in two evaluation moments. For each uniformity trial with fresh weight of 36 BEU, were determined the first-order spatial autocorrelation coefficient (obtained in the rows direction), variance, mean, variation coefficient of the trial, optimal plot size and the variation coefficient in the optimal plot size, using the equations described by Paranaíba et al (2009) and applied by Cargnelutti Filho et al (2014). In order to ensure greater reliability in the experimental design, the highest optimal plot size among the 48 uniformity trials (3.12 m2) was recommended for use in the evaluation of the fresh weight of triticale in anthesis completed and soft dough stages. %) for the fresh weight of triticale cultivar IPR111 in two evaluation moments (99 and 127 days after sowing)
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