Pesticides for the management of the yellow aphid (Melanaphis sacchari, Zehnter), in sorghum (Sorghum bicolor L. Moench), in Nicaragua

Abstract

With the objective of evaluating chemical, biological and botanical insecticides, for the management of the yellow sorghum aphid, a study was carried out on the “El Plantel” farm in the period from August to October of the year 2017. The alternatives evaluated were: Engeo, Imidacloprid, Beauveria bassiana, Metharizium anisopliae and Chile+garlic+soap compared to the control that was only water application. The variables evaluated were: number of nymphs, adults and winged M. sacchari per plant, as well as some economic variables such as the yield in kg ha-1 for evaluated treatment, partial budget analysis, dominance analysis and marginal rate of return. The results obtained in the study determine that the treatments Engeo and Imidacloprid were those that presented the best control of M. sacchari, better commercial yields were obtained by the Engeo and Imidacloprid treatments, the best rates of marginal return were obtained in the Imidacloprid treatment.