Impacts of drought on bean and corn production in the northern mesorregion of Minas Gerais

• Autor(a) principal: Rocha, Gabriella Guedes
• Data de Publicação: 2024
• Outros Autores: Freitas, Ana Carolina Vasques, Cunha, Ana Paula Martins do Amaral
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Brasileira de Climatologia (Online)
• Texto Completo: https://ojs.ufgd.edu.br/rbclima/article/view/17795
• topic: Mudança Climática. Evapotranspiração. Agricultura.; Climate change. Evapotranspiration. Agriculture.; Cambio Climático. Evapotranspiración. Agricultura

This research sought to analyze the occurrence of droughts and investigate their impact on corn and bean productivity in the northern mesoregion of Minas Gerais. The approach first included the analysis of drought occurrences in 25 municipalities identified by the Disaster Information System (S2iD). Subsequently, using data on precipitation and potential evapotranspiration and information on c orn and bean productivity, obtained by the Brazilian Institute of Geography and Statistics (IBGE), it was possible to carry out spatial trend analysis for each variable considered. The results indicated significant trends of reduction in precipitation and the Standardized Evapotranspiration Precipitation Index (SPEI) and increase in evapotranspiration during the period from 2003 to 2019. At the same time, a decrease in the average yield of corn production was observed (by 57% municipalities) and beans (in 70% of municipalities) for the same time interval. Positive correlations were observed between grain yield and precipitation and between yield and SPEI. Negative correlation values ​​were observed between grain yield and evapotranspiration. The results obtained can offer valuable information for formulating adaptation and mitigation strategies in the face of adverse climatic conditions.