Viabilidade técnica e econômica da aplicação de fungicidas foliares em híbridos de milho no Paraná: uma revisão meta-analítica

Abstract

This meta­analytical review points out the efficiency of the application of foliar fungicides on the productivity of corn hybrids in the cities of Londrina and Campo Mourão, Paraná. This study explored corn hybrids with and without the use of foliar fungicides. For the meta­analysis, data extracted from publications of the technical bulletins of the work of State Evaluation of Corn Cultivars of the Institute for Rural Development of Paraná (IDR­Paraná) were used. These data represent the harvests of the years 2022 and 2023. A total of 45 hybrids were analyzed, including genetically modified and conventional in 2022, while in 2023 there were a total of 43 hybrids, including genetically modified and conventional. The data were compiled and analyzed using OpenMEE software. Our analysis showed that the use of foliar fungicides in corn hybrids had varied effects on the harvests. In 2022, there was a notable variation in productivity between cultivars with and without treatment. However, in 2023 there was a significant difference between the control and treatment for the average of the two locations. Campo Mourão had a significant difference, while in the Londrina location, in the same harvest, there was no significant difference.