Persistence of Metarhizium anisopliae Incorporated into Soilless Potting Media for Control of the Black Vine Weevil, Otiorhynchus sulcatus in Container-Grown Ornamentals

Insects
Research was conducted to determine the persistence of Metarhizium anisopliae (F52), measured as infectivity against black vine weevil larvae, in a soilless potting medium at six wholesale nursery locations across the Willamette Valley, Oregon.

Laboratory Bioassays of Entomopathogenic Fungi for Control of Delia radicum (L.) Larvae

Insects
The objective of these studies was to determine the pathogenicity of entomopathogenic fungi against the cabbage maggot, Delia radicum (L.). The use of Metarhizium anisopliae isolate F52 in an integrated management program is discussed.

Effect of Potting Media Component on the Infectivity of Metarhizium anisopliae against the Black Vine Weevil (Coleoptera: Curculionidae)

Insects
The purpose of this study was to determine the persistence, measured as efficacy against BVW larvae, of M. anisopliae in five (coir, fir bark, hemlock bark, peat moss and perlite) common components of soilless potting media.

Evaluation of Application Technologies of Entomopathogenic Nematodes for Control of the Black Vine Weevil

Insects
Studies were conducted to determine the efficacy of three species of entomopathogenic nematodes (Heterorhabditis marelatus, Heterorhabditis bacteriophora, and Steinernema riobrave) applied in infected host cadavers or as aqueous applications for black vine weevil larval control.

A Technique for Continuous Mass Rearing of the Black Vine Weevil, Otiorhynchus sulcatus

Insects
Experiments were performed to determine if 1) O. sulcatus larval survival and development increased with a standard or improved diet and 2) whether O. sulcatus eggs could be stored for up to 4 weeks at 4 °C without significant reductions in larval survival and development.

Biology and Control of Root Weevils on Berry and Nursery Crops in Oregon

Insects
Researchers recently developed a mass rearing system for the black vine weevil (Otiorhynchus sulcatus) and strawberry root weevil (Otiorhynchus ovatus) and now are able to conduct controlled experiments to study their biology and to develop chemical and biological management systems.

Efficacy of Metarhizium anisopliae as a Curative Application for Black Vine Weevil (Otiorhynchus sulcatus) Infesting Container-Grown Nursery Crops

Insects
The objectives of this study were to determine the efficacy of a curative drench application of M. anisopliae for controlling black vine weevil (BVW) larval infestations in container-grown nursery plants and the effect of temperature on the rate of fungal growth and speed of kill.

Examination of the Interaction Between the Black Vine Weevil (Coleoptera: Curculionidae) and an Entomopathogenic Fungus Reveals a New Tritrophic Interaction

Insect
The purpose of this study was to characterize the behavior of black vine weevil larvae, Otiorhynchus sulcatus (F.), in the presence of two possible control options: the synthetic pyrethroid bifenthrin and the entomopathogenic fungus Metarhizium anisopliae (Metch.) Sorokin.

Natural Occurrence of Entomopathogens in Pacific Northwest Nursery Soil and Their Virulence to the Black Vine Weevil, Otiorhynchus sulcatus (F.) (Coleoptera: Curculionidea)

Insect
The black vine weevil Otiorhynchus sulcatus (F.) is the primary insect pest of field and container-grown woody ornamentals in the Pacifc Northwest (PNW). These studies were conducted to determine the natural occurrence of soil-borne entomopathogens in PNW nursery soils and determine their virulence to black vine weevil.

Ecology of Metarhizium anisopliae in Soilless Potting Media and the Rhizosphere: Implications for Pest Management

Insects
Studies on the biological control of black vine weevil (BVW) in container-grown ornamentals were conducted to determine the persistence and ecology of Metarhizium anisopliae (Metchnikoff) Sorokin incorporated into peat and bark-based potting media with and without a crab meal amendment in container-grown Picea abies ‘Nidiformis.’

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