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Título: | Análise de discrepâncias entre vigor vegetativo e produtividade de grãos de milho com abordagem multisensor |
Título(s) alternativo(s): | Analysis of discrepancies between vegetative vigor and corn grain yield with a multisensor approach |
Autores: | Alves, Marcelo de Carvalho Noetzold, Rafael Araújo, José Sérgio de |
Palavras-chave: | Sensoriamento remoto Agricultura de precisão Sentinel-2 Landsat-8 Índices de vegetação Remote sensing Precision agriculture Vegetation index |
Data do documento: | 12-Jan-2024 |
Editor: | Universidade Federal de Lavras |
Citação: | SOUZA, G. C. Análise de discrepâncias entre vigor vegetativo e produtividade de grãos de milho com abordagem multisensor. 2023. 24 p. Dissertação (Mestrado em Engenharia Agrícola)–Universidade Federal de Lavras, Lavras, 2023. |
Resumo: | Imagery from sensors embedded in satellites enables low-cost crop analysis and has been the subject of correlation studies between vegetation indices and productivity. Vegetation indices obtained from orbital platforms and crop maps have been important tools in the context of popularizing precision agriculture. However, there are many factors that affect maize yields and the resulting harvest maps. As a result, correlations between vegetation indices and yields are not always obtained. This leaves a gap for methodologies to identify areas of non-correlation and investigate the possible causes in a targeted manner. The aim of this study was to use freely available satellite images, together with yield data from a maize harvester, to identify regions with and without a correlation between yields and vegetation indices. In areas with correlation, a linear model of yield as a function of NDVI was obtained. A map of discrepancies was calculated, in which most of the crop was correlated, with yields varying by around 2 ton ha−1 in relation to the model. Areas with discrepant yields were identified, both negatively and positively in relation to the model, enabling a localized investigation into the possible causes of the phenomenon and crop management. |
URI: | http://repositorio.ufla.br/jspui/handle/1/58771 |
Aparece nas coleções: | Engenharia Agrícola - Mestrado (Dissertações) |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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DISSERTAÇÃO_Análise de discrepâncias entre vigor vegetativo e produtividade de grãos de milho com abordagem multisensor.pdf | 558,29 kB | Adobe PDF | Visualizar/Abrir |
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