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New Zealand Plant Protection 66 (2013): 324-332

Evaluation of selected entomopathogenic fungi and bio-insecticides against Bactericera cockerelli (Hemiptera)

N.A. Mauchline and K.A. Stannard

ABSTRACT

Entomopathogenic fungi could provide feasible pest management options for control of Bactericera cockerelli (Sulc) (Hemiptera: Triozidae), an important pest of solanaceous crops in New Zealand. In laboratory trials BotaniGard® ES and BotaniGard® 22WP (Beauveria bassiana; GHA strain) resulted in average nymph mortality of 82%, which was significantly greater than the conventional insecticide Oberon® (63%) or the microbial standard eNtocide L™ (63%) (P<0.01). Met52® (Metarhizium anisopliae; F52 strain), Mycotrol®O (B. bassiana; GHA strain) and Lecanicillium muscarium isolates resulted in 91- 100% adult and 55-70% nymph mortality. NoFly™ WP (Isaria fumosorosea; FE9901 strain), PreFeRal® 20WG (I. fumosorosea; Apopka 97 strain) and endemic I. fumosorosea isolate were less efficacious than other treatments. In greenhouse trials the application of BotaniGard® ES resulted in the greatest reduction in B. cockerelli infestation on both capsicums (88%) and tomatoes (83%). The performance of BotaniGard® ES was not adversely influenced by environmental conditions, unlike Met52® EC.

Keywords: entomopathogen, fungi, Bactericera cockerelli, psyllid.

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