Pepper Weevil Coleoptera: Curculionidae Preferences for Specific Pepper Cultivars, Plant Parts, Fruit Colors, Fruit Sizes, and TimingReportar como inadecuado




Pepper Weevil Coleoptera: Curculionidae Preferences for Specific Pepper Cultivars, Plant Parts, Fruit Colors, Fruit Sizes, and Timing - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Tropical Research and Education Center TREC, University of Florida, 18905 SW 280th Street, Homestead, FL 33031, USA





*

Author to whom correspondence should be addressed.



Academic Editors: Michael J. Stout, Jeff Davis, Rodrigo Diaz and Julien M. Beuzelin

Abstract Peppers Capsicum spp. are an important crop in the USA, with about 32,000 ha cultivated in 2007, which resulted in $588 million in farm revenue. The pepper weevil, Anthonomus eugenii Cano Coleoptera: Curculionidae, is the most troublesome insect pest of peppers in the southern United States. It is therefore urgent to find different vulnerabilities of pepper cultivars, fruit and plants parts, fruit colors and sizes, and timing to infestation by A. eugenii. Also relevant is testing whether fruit length and infestation state affect fruit numbers, weights, and proportions of fruit that are infested. Counts of A. eugenii adults and marks from oviposition and feeding suggested that C. chinense Jacquin -Habanero- was least susceptible, and C. annuum L. cultivars -SY- and -SR- were most susceptible. Comparison of plant parts and fruit sizes revealed that A. eugenii preferred the peduncle, calyx, and top of pepper fruits over the middle, bottom, leaves, or remainder of flowers. Anthonomus eugenii does not discriminate between green or yellow fruit color nor vary diurnally in numbers. Based on adult counts, medium to extra-large fruits ≥1.5 cm long attracted more weevils than small fruits <1.5 cm. However based on proportions of fruit numbers or fruit weights that were infested, there were no differences between large and small fruits. Choice of pepper cultivar can thus be an important part of an IPM cultural control program designed to combat A. eugenii by reduced susceptibility or by synchronous fruit drop of infested fruits. Our results are potentially helpful in developing scouting programs including paying particular attention to the preferred locations of adults and their sites of feeding and oviposition on the fruit. The results also suggested the potential value of spraying when the fruits are still immature to prevent and control infestation. View Full-Text

Keywords: Anthonomus eugenii; cultural control; scouting Anthonomus eugenii; cultural control; scouting





Autor: Dakshina R. Seal * and Cliff G. Martin

Fuente: http://mdpi.com/



DESCARGAR PDF




Documentos relacionados