Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/7276

Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Impact of a nucleopolyhedrovirus bioinsecticide and selected synthetic insecticides on the abundance of insect natural enemies on maize in Southern Mexico
Authors: Armenta, R
Martinez, Ana-Mabel
Chapman, Jason W
Magallanes, Ricardo
Goulson, Dave
Caballero, Primitivo
Cave, Ronald D
Cisneros, Juan
Valle, Javier
Castillejos, Vasty
Penagos, Dora I
Garcia, Luis
Williams, Trevor
Contact Email: dave.goulson@stir.ac.uk
Keywords: synthetic pesticides
baculovirus
maize
natural enemies
crop phenology
Issue Date: Jun-2003
Publisher: Entomological Society of America
Citation: Armenta R, Martinez A, Chapman JW, Magallanes R, Goulson D, Caballero P, Cave RD, Cisneros J, Valle J, Castillejos V, Penagos DI, Garcia L & Williams T (2003) Impact of a nucleopolyhedrovirus bioinsecticide and selected synthetic insecticides on the abundance of insect natural enemies on maize in Southern Mexico, Journal of Economic Entomology, 96 (3), pp. 649-661.
Abstract: The impact of commonly used organophosphate (chlorpyrifos, methamidophos), carbamate (carbaryl), and pyrethroid (cypermethrin) insecticides on insect natural enemies was compared with that of a nucleopolyhedrovirus (Baculoviridae) of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in maize grown in southern Mexico. Analyses of the SELECTV and Koppert Side Effects (IOBC) databases on the impact of synthetic insecticides on arthropod natural enemies were used to predict ≈75–90% natural enemy mortality after application, whereas the bioinsecticide was predicted to have no effect. Three field trails were performed in mid- and late-whorl stage maize planted during the growing season in Chiapas State, Mexico. Synthetic insecticides were applied at product label recommended rates using a manual knapsack sprayer fitted with a cone nozzle. The biological pesticide was applied at a rate of 3 × 1012 occlusion bodies (OBs)/ha using identical equipment. Pesticide impacts on arthropods on maize plants were quantified at intervals between 1 and 22 d postapplication. The biological insecticide based on S. frugiperda nucleopolyhedrovirus had no adverse effect on insect natural enemies or other nontarget insect populations. Applications of the carbamate, pyrethroid, and organophosphate insecticides all resulted in reduced abundance of insect natural enemies, but for a relatively short period (8–15 d). Pesticide applications made to late-whorl stage maize resulted in lesser reductions in natural enemy populations than applications made at the mid-whorl stage, probably because of a greater abundance of physical refuges and reduced spray penetration of late-whorl
Type: Journal Article
URI: http://hdl.handle.net/1893/7276
DOI Link: http://dx.doi.org/10.1603/0022-0493-96.3.649
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: ECOSUR, Mexico
ECOSUR, Mexico
IACR Rothamsted
Autonomous University of Chiapas (UNACH)
Biological and Environmental Sciences
University of Navarra
Escuela Agrı́cola Panamericana, Hondur
ECOSUR, Mexico
ECOSUR, Mexico
ECOSUR, Mexico
ECOSUR, Mexico
ECOSUR, Mexico
ECOSUR, Mexico

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