Eficiência das carboxamidas e estrobilurinas no manejo da ferrugem do cafeeiro

Coffee cultivation is one of the main activities of Brazilian agribusiness, with economic, social, and historical significance for the country. Brazil leads the world in coffee production and exports, with an emphasis on the Coffea arabica and Coffea canephora varieties. However, coffee productivity is frequently threatened by phytosanitary factors, especially coffee rust (Hemileia vastatrix), the main disease affecting the crop. Rust has a high capacity to spread and causes significant production losses, favored by specific climatic conditions such as high humidity, temperate temperatures, and low light. Chemical control is the main strategy used to manage rust, with an emphasis on carboxamide and strobilurin fungicides, which act on mitochondrial respiration in fungi. Carboxamides inhibit the enzyme succinate dehydrogenase (SDH), while strobilurins block complex III of the respiratory chain, directly interfering with ATP production by pathogens. These products have preventive and curative actions and are widely used in integrated disease management. However, their indiscriminate use can accelerate the emergence of pathogen resistance, compromising the effectiveness of treatments. Given this situation, this study seeks to evaluate the efficiency of carboxamides and strobilurins in controlling coffee rust, considering aspects such as the mode of action, favorable environmental conditions for the disease, and application strategies. The research aims to contribute to more sustainable and effective management practices, promoting the productivity and long evity of coffee crops. Keywords: Coffea arabica, Chemical control, Fungicides.