Efecto tóxico de Verbena officinalis (familia verbenaceae) en Sitophilus granarius (coleoptera: curculionidae)
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Fecha
2008
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Corporación Universitaria Lasallista
Resumen
Introduction. Sitophilus granarius, or maize beetle,
is considered as one of the most important plagues
of stored products. Objective. To evaluate the effect
of Verbena officinalis in the Sitophilus granarius control
in stored corn. Materials and methods. Two
presentations of verbena Verbena officinalis were
avaluated in the laboratory for the control of
Sithophilus granarius in stored corn, with
concentrations in powder of 0,4 g, 0,8 g, and 1,6 g
per every 10 g of corn and manure of 3, 6 and 9 ml
per every 10 g of variable maize was the mortality
rate of the imagos. The experimental design was done
at random, the treatments had four repetitions.
Results. The highest mortality rate was obtained in
powder in concentration of 1,6 gr with a mortality rate
of 50%. In the variance analysis made, the kinds of
presentation were meaningless and the
concentrations used in the Verbena extract were too
low to generate a higher mortality in Sitophilus.
Conclusion. Secondary metabolites have a toxic
activity against insects, interfering in their
development or their behavior, and thus contributing
to plague control.
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Palabras clave
Verbenaceae, Corporación Universitaria Lasallista, Verbena (verbena officinialis), L. Sitophilus Granarius L., Bioinsecticida, Plantas aromáticas, Gorgojo, Plagas agrícolas, Control de plagas agrícolas, Maíz, Maíz - Plagas, Maíz - Almacenamiento