CE: 1816 CF: cag033172132
RESEARCH ARTICLE
Biological insecticides for the control Spodoptera frugiperda Smith, its incidence on yield
Insecticidas biológicos para el control de Spodoptera frugiperda Smith, su incidencia en el rendimiento
Xavier Cayetano Muñoz Conforme1, Washington Filamir Comboza Quijano2, Esmeralda Jazmín Lara Obando2, María Virginia Mendoza García3, Nelly Narcisa Mejia Zambrano3, Julio Cesar Lopez Mendoza2, Nuvia Lucrecia Moran Sanchez2
1Universidad Laica Eloy Alfaro de Manabí Extensión Chone, Av. Eloy Alfaro, Chone, Manabí, Ecuador, CP 130711
2Universidad Agraria del Ecuador, Av. 25 de Julio y Pio Jaramillo, Guayaquil, Guayas, Ecuador, Casilla Postal 09-01-1248. CP 090104
3 Universidad Laica Eloy Alfaro de Manabí. Av. Circunvalación, Manta, Manabí, Ecuador, Casilla Postal 2732.CP 130802
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ABSTRACT
The work was carried out in farmers' fields of located in the area of Portoviejo, province of Manabí; with the objective of evaluating two biological insecticides, Methakill and Baukill with doses of 5, 10 and 15 mL L-1 of water for the control of S. frugiperda, being evaluated the populations of the insect before and after the application of the same. A Full Random Block Design was used, with three replicates. The chemical treatment (Lambda Cyhalothrin + Tiametoxan 1.5 mL L-1 of water) presented the lowest averages of damage (6.47 %), followed by the treatment that consisted of the spraying of Methakill in doses of 15 mL L-1 water with 10.57 % damage. The Control treatment had the highest percentages of involvement with 27.78 %. The highest yields were obtained in the treatments where Lambda cyhalothrin + Tiametoxan 1.5 mL L-1 water and Methakill 15 mL L-1 water were applied, statistically equal to each other with 7989.24 and 6919.43 kg ha-1 respectively. The best Marginal Return Rate was obtained using the Methakill treatment 15 mL L-1 of water with 1043.45 %.
