EFFECT OF PIPER EXTRACTS IN FALL ARMYWORM (SPODOPTERA FRUGIPERDA SMITH), UNDER SEMI-CONTROLLED CONDITIONS

A. Celis F., C. Mendoza F., A. Roa-B., W. Delgado-A.
The fall armyworm, Spodoptera frugiperda, is an economically important pest in crops such as cereals, cotton and pastures. Primary control of this pest is based on the application of synthetic chemical products. Due to chemical nature of secondary metabolites in plants of genus Piper, the effects of Piper extracts on larvae of S. frugiperda were evaluated to determine if these extracts could serve as an alternative control for this pest. Leaf extracts from P. el-bancoanum, P. arboreum, P. holtonii, and P. hispidium were applied to second instar larvae maintained under semi-controlled conditions with an artificial diet to test for antifeedant and knock-out effects. The results were compared with larvae treated with a biological insecticide (Bacillus thuringiensis) and larvae treated with a product of chemical synthesis (Chlorpyrifos). Concentrations of Piper extracts were 50, 100 and 200 mg L-1. Treatments were distributed in a completely randomized design (CRD). Application of extracts of P. el-bancoanum (200 mg L-1) and P. arboreum (50 mg L-1) resulted in a mortality rate of larvae similar to the application of B. thuringiensis and Chlorpyrifos. The greatest antifeedant effect was presented by applying Chlorpyrifos due to its knock-out effect, however B. thuringiensis, P. el-bancoanum (200 mg L-1) and P. arboreum (50 and 100 mg L-1) also caused a remarkable antifeedant activity. The observed effects appear related to the phytochemical profile of Piper, because the metabolites have a toxic and deterrent action.
Celis F., A., Mendoza F., C., Roa-B., A. and Delgado-A., W. (2014). EFFECT OF PIPER EXTRACTS IN FALL ARMYWORM (SPODOPTERA FRUGIPERDA SMITH), UNDER SEMI-CONTROLLED CONDITIONS. Acta Hortic. 1030, 49-54
DOI: 10.17660/ActaHortic.2014.1030.5
https://doi.org/10.17660/ActaHortic.2014.1030.5
antifeedant, knock-out, Piper el-bancoanum, P. arboreum, P. holtonii, P. hispidium
English
1030_5
49-54

Acta Horticulturae