Maize tolerance to Spodoptera frugiperda (J. E. Smith) leaf damage and insecticide application
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Hernández-Trejo, Antonia [1] ; López-Santillán, José A [1] ; Estrada-Drouaillet, Benigno [1] ; Reséndiz-Ramírez, Zoila [1] ; Varela-Fuentes, Sóstenes E. [1] ; Coronado-Blanco, Juana M. [1] ; Malvar-Rosa A. [2]
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[1] Universidad Autónoma de Tamaulipas
Universidad Autónoma de Tamaulipas
México
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[2] Misión Biolóxica de Galicia
Misión Biolóxica de Galicia
Pontevedra, España
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- Localización: Agro Productividad, ISSN-e 2594-0252, Vol. 15, Nº. 5, 2022 (Ejemplar dedicado a: Mayo), págs. 23-31
- Idioma: inglés
- Enlaces
- Dialnet Métricas: 1 Cita
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Resumen
Objective: To evaluate the tolerance of Tamaulipas native maize populations to the leaf damage caused by Spodoptera frugiperda.
Design/Methodology/Approach: During the two agricultural cycles of 2019, the leaf damage by S. frugiperda and the grain yield decrease in 10 populations of native maize were evaluated In Güémez, Tamaulipas.Results: Leaf damage by S. frugiperda was minimal when synthetic insecticide (emamectin benzoate) was applied in the autumn-winter agricultural cycle; meanwhile, it was greater in the spring-summer cycle, but its levels remained lower than the rest of the S. frugiperda management strategies. Leaf damage was higher during the spring-summer cycle because the environmental temperature was higher than in the autumn-winter cycle.
Study limitations/Implications: Spodoptera frugiperda is an important pest of maize. It is mainly controlled using synthetic insecticides, which cause environmental and human health risks. The use of tolerant cultivars is a strategy that reduces these risks.
Findings/Conclusions: The TML2S3 and VHA maize populations were tolerant to S. frugiperda leaf damage in both agricultural cycles; it is considered as the base germplasm for a program aimed at enhancing this characteristic.
