Whitefly Management in Arizona: Conservation of Natural Enemies Relative to Insecticide Regime

Persistent Link:
http://hdl.handle.net/10150/210374
Title:
Whitefly Management in Arizona: Conservation of Natural Enemies Relative to Insecticide Regime
Author:
Naranjo, Steven E.; Hagler, James R.; Ellsworth, Peter C.
Affiliation:
USDA-ARS, Western Cotton Research Laboratory, Phoenix, AZ; University of Arizona, Maricopa, AZ
Issue Date:
Apr-1998
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Cotton: A College of Agriculture Report
Abstract:
Field studies were conducted in 1997 to evaluate strategies for management of whitefly (Bemisia tabaci). We evaluated the effects of different insecticide regimes (conventional and insect growth regulators [IGR]) on the abundance of native parasitoids and predators associated with whitefly in Arizona cotton. Immature parasitoids were most abundant in untreated control plots and there was little difference among insecticide regimes. Percentage parasitism was low overall (< 30 %), but was highest in Knack plots and lowest in untreated control and Applaud plots. Predator populations were lowest in plots treated with conventional insecticides, and there were several instances where weekly or season -long populations of several predator species/groups were slightly depressed in IGR plots compared with the untreated check. Overall, results are encouraging and indicate that use of IGRs helps to conserve populations of native natural enemies.
Keywords:
Agriculture -- Arizona; Cotton -- Arizona; Cotton -- Insect investigations
Series/Report no.:
AZ1006

Full metadata record

DC FieldValue Language
dc.titleWhitefly Management in Arizona: Conservation of Natural Enemies Relative to Insecticide Regimeen_US
dc.contributor.authorNaranjo, Steven E.en_US
dc.contributor.authorHagler, James R.en_US
dc.contributor.authorEllsworth, Peter C.en_US
dc.contributor.departmentUSDA-ARS, Western Cotton Research Laboratory, Phoenix, AZen_US
dc.contributor.departmentUniversity of Arizona, Maricopa, AZen_US
dc.date.issued1998-04-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalCotton: A College of Agriculture Reporten_US
dc.description.abstractField studies were conducted in 1997 to evaluate strategies for management of whitefly (Bemisia tabaci). We evaluated the effects of different insecticide regimes (conventional and insect growth regulators [IGR]) on the abundance of native parasitoids and predators associated with whitefly in Arizona cotton. Immature parasitoids were most abundant in untreated control plots and there was little difference among insecticide regimes. Percentage parasitism was low overall (< 30 %), but was highest in Knack plots and lowest in untreated control and Applaud plots. Predator populations were lowest in plots treated with conventional insecticides, and there were several instances where weekly or season -long populations of several predator species/groups were slightly depressed in IGR plots compared with the untreated check. Overall, results are encouraging and indicate that use of IGRs helps to conserve populations of native natural enemies.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectCotton -- Arizonaen_US
dc.subjectCotton -- Insect investigationsen_US
dc.identifier.urihttp://hdl.handle.net/10150/210374-
dc.relation.ispartofseriesAZ1006en_US
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