Spodoptera frugiperda (Lepidoptera: Noctuidae) infestation in maize and its management using mulberry organic residues
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| Autoren: | , , , , , |
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| Status: | Versión publicada |
| Publikationsdatum: | 2026 |
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Soil incorporation of Morus alba biomass mitigates Spodoptera frugiperda damage in maize, through the release of bioactive secondary metabolites with antifeedant properties. Objective. To characterize farmer perceptions of Spodoptera frugiperda severity and evaluate the efficacy of Morus alba residue incorporation as a sustainable management strategy in the Mocache canton, Ecuador. Materials and methods. The research was conducted between December 2023 and May 2024. The study consisted of two phases: a survey of farmers and a field experiment. The farmers were surveyed regarding the agronomic practices they implemented to manage S. frugiperda. The experiment was conducted in the locality of Jesús del Gran Poder and consisted of three treatments: i) a control without pest management or residue incorporation (Control); ii) soil incorporation of 1 t ha⁻¹ of a mixture of maize residues (80 %) and fragmented mulberry cv. Tigreada (20 %) (M+M); and iii) the application of methomyl insecticide. The variables of severity of infestation and agricultural yield were evaluated. A randomized complete block design with three treatments and three replicates was employed. Treatment means were compared using Duncan’s multiple range test (α = 0.05). Statistical processing was performed using InfoStat. Results. Residue incorporation reduced severe foliar damage (grades 4Ð5) to 29.6 %, significantly lower than the control (36.1 %; p < 0.05). Grain yield reached 4.1 t ha⁻¹ with residues, statistically comparable to methomyl (4.6 t ha⁻¹) and 17 % higher than the control (3.5 t ha⁻¹). Conclusions. The high perception of severity of S. frugiperda by farmers corresponds with high levels of infestation, associated with inadequate agronomic practices and poor technical training. Under the tested conditions, the maize and mulberry residues incorporated into the soil reduced infestation severity and resulted in grain yields comparable to those obtained with insecticide, supporting its potential as a management alternative. |
| Land: | Portal de Revistas UCR |
| Institution: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Sprache: | Inglés Español |
| OAI Identifier: | oai:portal.revistas.ucr.ac.cr:article/6700 |
| Online Zugang: | https://revistas.ucr.ac.cr/index.php/ragromeso/article/view/6700 |
| Stichwort: | gusano cogollero manejo integrado de plagas enmienda al suelo Zea mays Morus alba fall armyworm integrated pest management soil amendments |