Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/5351
Título: Análise da variabilidade espácio-temporal da produtividade de milho numa parcela na região da Golegã
Autor: Paes, Vasco Maria Tareco Brito
Orientador: Pinto, Pedro Aguiar
Braga, Ricardo Pereira
Palavras-chave: precision farming
productivity
yield maps
yield monitors
Data de Defesa: 2012
Editora: ISA/UTL
Citação: Paes, V.M.T.B. - Análise da variabilidade espácio-temporal da produtividade de milho numa parcela na região da Golegã. Lisboa: ISA, 2012, 96 p.
Resumo: The promise of precision agriculture is to enable a farm manager to manage large areas of an agricultural crop with the detail with which one manages a garden that is to effectively and efficiently use resources as only a garden can, as a result of its small size. This goal is extremely timely in the current context of agriculture, since there is the need to produce very high quality service at low cost and in an environmentally sustainable manner. This work was devoted to a study of a basic precision agriculture resource: the yield map. For this valuable tool will become a key part in the process of decision making, it is necessary that their use is correct ie firstly, that the yield map is accurate and free of major sources of error, and secondly, that yield map(s) can be manipulated in order to extract from the maximum added value. In this thesis we investigated methods based on filters to effectively eliminate major errors in the data from yield monitor. The successive filters were able to remove about 20-30% of the original data having any type of error, and allow the construction of more accurate and reliable yield maps. Also that it allow for an increased spatial dependence. This step is essential in order to use yield map in the decision process. Subsequently, the corrected yield maps have a potential, which should be exploited. Thus, there are several recovery operations of the yield maps, from the descriptive statistics of the variability, through the interpretation of patterns of variability, the relative productivity maps, the gross margin maps, as well as the spatio-temporal analysis and impact of variability that farm manager to provide a very significant added value in order to optimize the management of their plots. After evaluating economic, technical and logistics, optimization of management of the plot may involve to the application of different production inputs using VRT technology. It is important for this purpose, initially, the identification of homogeneous management zones. In the case of the field that was studied, a center pivot in Golegã it was identified water stress as the cause of spatial variability and loss of productivity.
Descrição: Mestrado em Engenharia Agronómica - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/5351
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis

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