Aplicabilidade de zonas de manejo na diferenciação dos atributos do solo

• Ano de defesa: 2026
• Autor(a) principal: Rosso, Daiane Luisa
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; Brasil; UFSM; Programa de Pós-Graduação em Agricultura de Precisão; Colégio Politécnico da UFSM
• Palavras-chave em Português: Agricultura de precisão; NDVI; Fertilidade do solo; Plantio direto; Precision agriculture; Soil fertility; No-till; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
• Link de acesso: http://repositorio.ufsm.br/handle/1/39265

The delimitation of management zones (MZ) is an essential tool in Precision Agriculture (PA), allowing the division of land into sub-regions with distinct productive potentials. It is desirable that the spatial variability indicator be easily and quickly acquired, highlighting the use of vegetation indices such as NDVI. This study aimed to investigate the applicability of MZ maps, delimited from the mapping of the spatial variability of the NDVI vegetation index, in differentiating soil attributes for localized management. The study was conducted in two distinct grain production fields in Rio Grande do Sul (Field 1 and Field 2). NDVI maps were obtained using the tools available in the EOSDA Crop Monitoring program (EOSDA, 2024), and value interpolation was performed using ordinary kriging. MZ maps were created from the mapping of NDVI spatial variability. The delimited MZs guided soil sampling and penetration resistance measurement. NDVI showed spatial variability in both fields for the three growing seasons studied, allowing for the delimitation of well-defined management zones. In Field 1, the delimitation of the area into three management zones made it possible to identify a region with lower productive potential (ZM 3), concentrating chemical and mechanical resistance restrictions to penetration, this region being indicated by lower NDVI values. In Field 2, the delimitation of the area into two management zones did not indicate statistically significant differences between the average values of the soil attributes studied. This study indicates that the delimitation of management zones based on the temporal monitoring of NDVI over three growing seasons presents itself as a potential tool for the localized management of chemical attributes and soil penetration resistance; however, further studies are needed to validate this technique.