Heterostylum robustum (Osten Sacken) is the principal parasite
of the alkali bee, Nomia melanderi Ckll., one of the most efficient
pollinators of alfalfa in the western United States.
The purpose of the study was to determine the incidence of
parasitism and to investigate the biology of H. robustum.
The fly...
The leaf- cutter bee Megachile rotundata (Fabricius) is an important
alfalfa pollinator in western North America.
This study was designed to provide information on methods of
orientation used by M. rotundata in order to make recommendations
regarding the parameters within which adult nesting populations may
be relocated.
Preliminary studies suggest...
The pathogenicity of A. flavus on alkali bee larvae was studied
using sample materials from three nesting sites of these soil
inhabiting bees along the Oregon-Washington state line. Soil
saprophytes of the biosphere of the alkali bee were also studied.
Field observations and direction of soil cores from bee beds...
Published June 1954. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Revised June 1958. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The following taxonomic keys are adapted in part from the subgeneric and species descriptions and keys produced by McGinley (2003), Gibbs et al. (2013) and Gardner and Gibbs (2022). Additional identification information was provided by Jason Gibbs, Thilina Hettiarachchi (University of Manitoba), and Joel Gardner (Washington State University). While these...
The objectives of this study were (a) to measure the amount
of cross-pollination caused by three bee species at 10, 20 and 40
rods distance from a foreign pollen source, (b) to measure the effects
of bee species, planting pattern and season on broad sense heritability
estimates for seed yield...
The study involves the establishment, management, and behavioral
observations of Nomia melanderi Cockerell and Megachile rotundata
(Fabricius) in California, a survey of native bees within western Fresno
County, a determination of selfing and/or parthenocarpy in two fields of
alfalfa, and observations on the honeybee as an alfalfa pollinator.
The alkali...
Published October 1955. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog