Diseases impact the performance of maize hybrids in southern Minas Gerais, Brazil

Revista Agrogeoambiental

Endereço:
Avenida Vicente Simões, nº 1111, Nova Pouso Alegre - Nova Pouso Alegre
Pouso Alegre / MG
37553-465
Site: http://agrogeoambiental.ifsuldeminas.edu.br
Telefone: (35) 3449-6158
ISSN: 23161817
Editor Chefe: Saul Jorge Pinto de Carvalho
Início Publicação: 31/03/2009
Periodicidade: Trimestral
Área de Estudo: Ciências Agrárias, Área de Estudo: Multidisciplinar

Diseases impact the performance of maize hybrids in southern Minas Gerais, Brazil

Ano: 2025 | Volume: 17 | Número: Não se aplica
Autores: Vieira Pimentel, G. ., Rodrigues da Silva, L. D., Costa, N., Santana, A., da Cruz Silva Watanabe, E., & Guimarães Moreira, S.
Autor Correspondente: Vieira Pimentel, G | [email protected]

Palavras-chave: phytopathogens, grain quality, yield, Zea mays.

Resumos Cadastrados

Resumo Inglês:

Maize (Zea mays L.) is a profitable crop for rural producers, but grain yield is still limited by factors such as not choosing a hybrid resistant to major diseases that cause leaf and pre-harvest damage. Thus, this study was developed with the objective of evaluating the agronomic performance; reaction to the attack of brown spot, white spot, and ear rot complex; and the grain health of maize hybrids. A randomized block experimental design was used, with treatments consisting of eight maize hybrids (DKB 390, DKB 230, DKB 177, 30F53, KWS 9110, KWS 9006, KWS 9004, and Supremo) in five replications. The following traits were evaluated: severity (%) of foliar and ear diseases, incidence (%) of grain pathogens, plant and ear height, yield, 100-seed weight, and final stand. There were significant differences among the hybrids for plant height (PH), yield (YD), and 100-seed weight (SW). The most severe leaf damage was caused by Cercospora zeae-maydis and Pantoea ananatis. Fusarium graminearum occurred in 80 % of the grain of the hybrids, except for DKB 390 and KWS 9110. High grain yield and satisfactory levels of disease resistance were found for the hybrids DKB 177 and KWS 9006.