Activity of Meadowfoam (Limnathes alba) Seed Meal Glucolimnanthin Degradation Products Against Soilborne Pathogens

Disease
Researchers evaluated the toxicity of glucolimnathin 1 and its degradation products on several important soilborne pathogens of high-value crops. Pests targeted in the studies included plant-parasitic nematode Meloidogyne hapla, fungus Verticillium dahliae, and oomycete Pythium irregulare.

The Effects of Methyl Bromide Alternatives on Soil and Seedling Pathogen Populations, Weeds, and Seedling Morphology in Oregon and Washington Forest Nurseries

Disease
Fumigation treatments (a conventional methyl bromide – chloropicrin application and reduced-rate alternative fumigant treatments) and a nonfumigated treatment were evaluated at forest nurseries in Oregon and Washington for their effects on soil pathogen populations, weeds, and seedling morphology.

Influence of Isolation Method on Recovery of Pythium Species From Forest Nursery Soils in Oregon and Washington

Disease
In an attempt to identify Pythium species (common dampening off pathogens) associated with forest nursery soils, field surveys were conducted at three forest nurseries (two in Oregon and one in Washington) in 2008 using three isolation methods.

Susceptibility of the Strawberry Crown Moth (Lepedoptera: Sesiidae) to Entomopathogenic Nematodes

Insects
The purpose of this research was to determine the susceptibility of the strawberry crown moth, Synanthedon bibionipennis (Boisduval) (Lepidoptera: Sesiidae) larvae to two species of entomopathogenic nematodes. The entomopathogenic nematodes Steinernema carpocapsae (Weiser) strain Agriotos and Heterorhabditis bacteriophora (Steiner) strain Oswego were evaluated in laboratory soil bioassays and the field.

Diversity of Rhizosphere Associated Entomopathogenic Fungi of Perennial Herbs, Shrubs and Coniferous Trees

Insects
This study sought to ascertain if there was an association between host plant and species of fungi by using phylogenetic analysis to determine the prevalence of Metarhizium and Beauveria spp. isolated from the rhizosphere of strawberry, blueberry, grape and Christmas tree crops in the Willamette Valley of Oregon.

Susceptibility of the Filbertworm (Cydia latiferreana, Lepidoptera: Tortricidae) and Filbert Weevil (Curculio occidentalis, Coleoptera: Curculionidae) to Entomopathogenic Nematodes

Insects
A report on research conducted to determine the susceptibility of the two primary direct insect pests of hazelnuts in Oregon to three species of entomopathogenic nematodes. Additionally, a small-scale replicated field trial was performed to determine the efficacy of the two most effective nematodes species in the laboratory against both insects in the field.

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.

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.

They Raise Them DIfferently Up North: Different Production Practices in Austrailian Growing Areas Affect Mycorrhizae

Management
Report on a survey conducted with the purpose of collecting information on a number of production practices that had been shown in the past to affect mycorrhizal infection and that might have the same effects in Australian blueberry farms.

Who's on Your Roots? A Look at Mycorrhizal Fungi in Austrailian Blueberry Fields

Nursery Crops
Researchers collected samples of blueberry roots from fields in Australia in an effort to (1) identify the fungi present in roots of field-grown blueberry plants, (2) determine whether the fungi formed mycorrhizae with blueberry plants, and (3) establish whether the fungi preferred specific sources of nitrogen (N) for growth.

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