DESEMPENHO DA PRODUTIVIDADE DE MILHO A PARTIR DE APLICAÇÃO DE FUNGICIDA EM DIFERENTES ESTÁGIOS FENOLÓGICOS

Corn (Zea mays L.) is a crucial crop in terms of global production and economic value, but it is susceptible to fungal diseases such as common rust (Puccinia sorghi) and cercosporiosis (Cercospora zeae-maydis), which can reduce grain production and quality. Effective control of these diseases is vital for food security and agricultural economy. Proper management of corn fungal diseases depends on the plant's phenological stages, from planting to grain maturity. The application of fungicides at strategic moments during the plant's life cycle is essential to prevent infections and reduce disease impact. A study conducted in Patos de Minas, Minas Gerais, during 2023, evaluated the effect of fungicide application at different phenological stages of corn on final productivity. The results showed that fungicide application at multiple phenological stages (V4, V8, and VT) resulted in greater above-ground height, lower severity of fungal diseases, higher productivity, and uniform stalk diameter compared to the control treatment. This integrated disease management method proved effective in protecting plants against fungal diseases, promoting healthier and more vigorous growth, and increasing final corn productivity. These findings highlight the importance of fungicide application at strategic moments in the corn development cycle to maximize productivity and promote more efficient and sustainable agriculture.