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Multiple researches have shown the environmental, economic and productive benefits that can be generated when including natural vegetation in the margins of the crops. This happens thanks to the presence of natural habitats, which are the ones that promote biotic factors such as natural enemies and abiotic ones as temperature, humidity o rain that can affect negatively the pests. The objective of this research was to evaluate and compare the effect of other natural systems present at the same landscape such as crop of oil palm and gallery forests over the natural biological control of Spodoptera frugiperda in growing areas of rice. For this purpose, an area of study was selected at the Colombian plain foothills (Villanueva, Casanare), a place that is characterized for having big extensions of rice, surrounded by oil palms plantations and gallery forests. The abundance of S. frugiperda in the stages of larva and imago was evaluated, as well as the parasitism of eggs and larvae and the diversity of natural enemies and other arthropods. It was found that plantations of oil palm, as the gallery forests promote the natural biological control of S. frugiperda by increasing the diversity of the natural enemies and reduction of the pest population in the borders of the crop. The importance of parasitoids as Apanteles marginiventris and predators of the order Odonata in the control of S. frugiperda was identified. It is highlighted the importance to associate perennial crops as oil palm with transitory crops as rice in the planning of agroecosystems on the region and promote the conservation of gallery forest, as long as they can become key factors in the natural biological control of pests. Nevertheless, aspects as the low quality of the habitat and frequently use of chemical pesticides affected the results.

Incidencia de los márgenes sobre el control biológico natural de Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) en cultivos de arroz