Precisão experimental para a cultura do mamoeiro à campo

• Ano de defesa: 2014
• Autor(a) principal: Ferreira, Jeferson Pereira
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Espírito Santo; BR; Mestrado em Agricultura Tropical; UFES; Programa de Pós-Graduação em Agricultura Tropical
• Palavras-chave em Português: Sample size; Experimental precision; Carica papaya L.; Planejamento amostral; Tamanho amostral; Mamão; Bootstrap (Estatística); Agricultura - Experimentação; Agronomia; 63
• Link de acesso: http://repositorio.ufes.br/handle/10/8234

The horticulture is one of the segments that stand out in the Brazilian agriculture, being the papaya (Carica papaya L.) one of the bearer of the highest importance in country´s economy. The correct dimensional sample is crucial in obtaining precise estimates in experiments with papaya crops. This precision is, generally calculated by the variation of its coefficient, being that the lower the value, the higher it is homogeneity data and lower are the chance of variations. The object of the work was to estimate the size of its sample (number of fruits) necessary to evaluate its characteristics, fruit mass (g) and the total soluble solid contents (°Brix), in commercial papaya crops THB, Golden, Tainung 01 and Uenf/Caliman 01, by simulating re-sampling using the bootstrap technique; studying the coefficient of variation (CV) of the experiments within the papaya culture, proposing banners which instructs the researchers in evaluating their studies. To determine these tracks, the data utilized were obtained by bibliographical revisions in national journals and submitted to the methodology proposed by Garcia (1989), Costa et al. (2002) and in the proposal done by Gomes (2009). The results found for the dimensional sample indicated bigger sample sizes for the character study for fruit masses, which varied from 48 fruits in the THB plantation, to 29 fruits in the Uenf/Caliman 01 plantations, both with a margin of error of 5% on average. The total soluble solids content showed oscillating sample size between six fruits in the Golden plantation and 13 fruits in the Tainung 01 plantation with a margin of error of 5% on average. The results related with the variable coefficient, indicated that the value tracks of the (CV) ix differs in a variety of characters, justifying the necessity of utilizing character specific evaluation.