| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 2.1 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
A Pera Rocha do Oeste DOP (Pyrus communis L. cv. ‘Rocha’) é uma variedade portuguesa da região do Oeste. Este estudo pretende avaliar a relação do grau brix e também de diversos parâmetros característicos da Pera Rocha com a localização geográfica dos pomares. Desta forma, começou-se por criar uma matriz detalhada com os diferentes parâmetros a avaliar acerca da forma de produção da Pera Rocha. Para tal foram realizadas várias entrevistas a 5 Organizações de Produtores, da região do Oeste, e foram analisadas 57 parcelas. Os dados que foram analisados referem-se ao solo, clima, produção, qualidade da Pera Rocha, o tipo de água e rega, doenças e pragas, principais práticas de fertilização, rentabilidade da cultura e novas tecnologias. Com estes dados prosseguiu-se para uma análise estatística. A primeira avaliação feita foi ao cálculo da média e desvio padrão do grau brix da Pera Rocha dos pomares das diferentes Organizações de Produtores utilizando o programa SPSS. Também com este programa fez-se uma análise aos componentes principais (PCA) e concluiu-se que a variável mais correlacionada com o grau brix foi a duração da rega. As outras variáveis que também estão correlacionadas com o grau brix são a matéria orgânica e o número de substâncias ativas de fitofarmacêuticos que são aplicados durante o ciclo vegetativo da planta.
The Pera Rocha do Oeste PDO (Pyrus communis L. cv. 'Rocha') is a Portuguese variety from the Oeste region. This study intends to evaluate the relationship of the brix grade and also of several characteristic parameters of Pera Rocha with the geographical location of the orchards. In this way, we started by creating a detailed matrix with the different parameters to be evaluated about the way of production of Pera Rocha. To this end, several interviews were carried out with 5 Producers' Organizations, in the Oeste region, and 57 plots were analysed. The data that were analyzed refer to soil, climate, production, quality of Pera Rocha, type of water and irrigation, diseases and pests, main fertilization practices, crop profitability and new technologies. With these data, we proceeded to a statistical analysis. The first evaluation carried out was to calculate the mean and standard deviation of the Brix degree of Pera Rocha from the orchards of the different Producer Organizations using the SPSS program. Also with this program, an analysis of the principal components (PCA) was carried out and it was concluded that the variable most correlated with the degree of brix was the duration of irrigation. The other variables that are also correlated with the degree of brix are the organic matter and the number of active substances of plant protection products that are applied during the vegetative cycle of the plant.
The Pera Rocha do Oeste PDO (Pyrus communis L. cv. 'Rocha') is a Portuguese variety from the Oeste region. This study intends to evaluate the relationship of the brix grade and also of several characteristic parameters of Pera Rocha with the geographical location of the orchards. In this way, we started by creating a detailed matrix with the different parameters to be evaluated about the way of production of Pera Rocha. To this end, several interviews were carried out with 5 Producers' Organizations, in the Oeste region, and 57 plots were analysed. The data that were analyzed refer to soil, climate, production, quality of Pera Rocha, type of water and irrigation, diseases and pests, main fertilization practices, crop profitability and new technologies. With these data, we proceeded to a statistical analysis. The first evaluation carried out was to calculate the mean and standard deviation of the Brix degree of Pera Rocha from the orchards of the different Producer Organizations using the SPSS program. Also with this program, an analysis of the principal components (PCA) was carried out and it was concluded that the variable most correlated with the degree of brix was the duration of irrigation. The other variables that are also correlated with the degree of brix are the organic matter and the number of active substances of plant protection products that are applied during the vegetative cycle of the plant.
Description
Keywords
Pera Rocha Grau Brix Organizações de produtores Producer organizations