Commercial inoculant products for subclover that are marketed in the Pacific Northwest were evaluated in field trials (supplemented by appropriate laboratory analysis) at four sites in southwest Oregon. The materials tested were Nitragin (Milwaukee, WI) and Northrup-King (Minneapolis, MN) peat-based inocula, and Celpril (Manteca, CA) inoculated, lime-pelleted subclover seed. Duplicate...
Microbial populations associated with the major substrates of the
canopy of a 70 m old-growth Douglas fir were studied to determine
potential activities. Seasonal samples from bark, foliage, epiphytic
moss, lichens, and litter accumulations were collected to i) obtain
population data, ii) to isolate the major groups of microorganisms
present,...
Three isolates of Escherichia coli were labeled by their resistance
to sodium azide and, separately, to novobiocin, nalidix acid, and tetracycline.
The strains exhibited a high degree of persistence in the soil
environment and were recoverable on strain specific media at levels
within the 95% confidence interval of the numbers...
A modified agar overlay technique for the preliminary screening
of antibiotic producing Streptomyces spp. has been developed and
compared to the routinely used shake flask method and the
unmodified agar overlay technique. The percentage of isolates
exhibiting antimicrobial activities was found to be greater in the
modified overlay technique.
Three...
Physical, chemical and bacterial water quality parameters of
the upper Wallowa River were sampled periodically between July 2,
1978 and June 9, 1979 at nine stream and lake sampling sites. Water
upstream from Wallowa Lake was typified by low nutrient concentrations
( generally below detectable limits except for nitrates), low....
Persistence has been identified as an issue at all levels of higher education,
and numerous strategies have been attempted to stem the flow of students who leave
an institution before completing their programs of study. Persistence research
abounds at the community college, four-year college and university levels, but little
research...