Soil solarization has been used throughout the world, but its effect on plant growth variables in ornamental tree saplings in the Willamette Valley are not well documented. Solarization could be an alternative to chemical controls for soil pathogens and weeds, and it may also influence plant growth factors. This study...
Full Text:
kills
140°F for X weeks
Depends on climate, latitude
Diurnal fluctuations
Clara Weidman, 2015
In this paper, we consider European and American option pricing problems under regime switching jump diffusion models which are formulated as a system of partial integro-differential equations (PIDEs) with fixed and free boundaries. For free boundary problem arising in pricing American option, we use operator splitting method to deal with...
This investigation was designed to determine the
relationship of student teachers' commitment to the set
of values, attitudes, and behaviors that are characteristically
fostered and rewarded by bureaucratic organizations
and their verbal classroom behavior under actual
teaching conditions,
The purpose of the study was expressed by the
formulation of an...
Symbiotic associations are established between non-leguminous
(actinorrhizal) nitrogen-fixing flowering plants and two categories
of microorganisms: mycorrhizal fungi and a filamentous actinomycete.
The actinomydete induces nodule formation and produces nitrogenase,
the enzyme responsible for the reduction of atmospheric nitrogen to
a form available to higher plants. The mycorrhizal fungus is found...
Negative feedback has become ubiquitous in science both as a
technique and as a conceptual tool. As a technique, negative feedback
has a long history; devices based in its use were made in
antiquity. It has only been during the last century, however, that
rigorous quantitiative methods have become associated...
From 25 April through 30 October 1992, I conducted 14 waterbird and raptor censuses at Cabell Marsh. I observed 33 waterbird taxa and seven raptor species, including hatch-year individuals of five waterbird species. The records for each census are given.
Published October 1961. 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
Four isolates of Glomus mosseae, collected from diverse
geographic locations, were pot cultured on varied host plants or
stored in the same soil as collected. Spores of three isolates failed
to germinate on any of five agar media while the fourth germinated
well on all media. Lack of germination on...