Resumo

MUNOZ CONFORME, Xavier Cayetano et al. Biological insecticides for the control Spodoptera frugiperda Smith, its incidence on yield. Ctro. Agr. [online]. 2017, vol.44, n.3, pp. 20-27. ISSN 0253-5785.

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 %.

Palavras-chave : agrochemicals; toxic substances.

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