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

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.

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

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

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)

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.

Phenolic Composistion of Basil Plants is Differentially Altered by Plant Nutrient Status and Inoculation with Mycorrhizal Fungi

Four cultivars of basil were inoculated or not with the arbuscular mycorrhizal fungus (AMF), Rhizophagus (formerly Glomus) intraradices (Schenck & Smith) Walker & Schubler and grown with a fertilizer to access whether 1) P availability and inoculation with AMF influences the phenolic composition of basil; and 2) treatment effects on phenolic composition are related to plant nutrient status.

Irrigation Frequency Alters Nutrient Uptake in Container-grown Rhododendron Plants Grown with Different Rates of Nitrogen

A report on the influence of irrigation frequency and rate of nitrogen (N) application on uptake of other nutrients in one deciduous and two evergreen cultivars of Rhododendron grown in containers for 1 year. Researchers also evaluated whether nutrient concentrations in different structures and ratios of N to other nutrients in leaves and whole plants could be used to detect the influence of irrigation frequency on the relationship between N and other nutrients.

Nutrient Uptake and Loss by Container-grown Deciduous and Evergreen Rhododendron Nursery Plants

Nursery Crops
The objectives of the study were to determine whether N availability alters 1) the uptake of other nutrients; 2) allocation of other nutrients among different plant structures; 3) ratios of N uptake to uptake of other nutrients (N uptake ratios); and 4) nutrient losses during the fall and winter.

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.

Chicoric Acid Levels in Commercial Basil (Ocimum basilicum) and Echinacea purpurea Products

In this study researchers evaluated the chicoric acid concentrations in dried and fresh basil (Ocimum basilicum) products available to consumers and how these concentrations compare to those from E. purpurea plant and products.

Spraying Leaves of Pear Nursery Trees with Urea and Copper Ethylenediaminetetraacetic Acid Alters Tree Nitrogen Concentration Without Influencing Tree Susceptibility to Phytophthora syringae

The specific objectives of the study were to determine whether susceptibility of field-grown pear trees to P. syringae is related to N concentration in stems and is altered by spraying trees with urea or the defoliant CuEDTA at different times in the autumn before and after inoculation with the pathogen.