EVALUACIÓN BIOINSECTICIDA DE EXTRACTOS DE BURSERA COPALLIFERA (D.C.) BULLOCK Y BURSERA GRANDIFOLIA (SCHLTDL.) ENGL. EN GUSANO COGOLLERO SPODOPTERA FRUGIPERDA J.E. SMITH (LEPIDOPTERA: NOCTUIDAE)

Abstract

This study evaluated the bioinsecticide
activity of organic extracts of Bursera copallifera and B. grandifolia on L1 larvae of
Spodoptera frugiperda. It is likely that the
acetonic extract (500 ppm) of leaves of B.
copallifera had an effect as an antifeedant
on armyworm, causing a 50% reduction in
larval weight at 14 days. It also produced
47% larval mortality, whereas the hexane
extract produced 44% deformed pupae, and
of the population that emerged from pupae,
14% were deformed as adults. Acetone and
methanol extracts of leaves of B. grandifolia
produced 37 and 45% larval mortality at
14 days, respectively, whereas the hexane
extract from stems caused a larval mortality
of 37% over the same period.