Water use restrictions are continuing to have an impact on the way turf is managed today and will be managed in the future. The objective of this research was to evaluate the irrigation requirements of ten newly established cool-season turfgrass species maintained under two different mowing height and nitrogen fertility...
A perennial grass grown in strips between the rows of grapevines, with a bare soil herbicide strip under the rows of vines, is a common form of vineyard soil management. Irrigation, though not practiced for grape culture in western Oregon at this time, could be used to supplement the soil...
Corylus avellana L. is a global commodity and a valuable crop for the U.S. Pacific Northwest. A tremendous amount of work has been put into the development of healthy disease free, high yielding and tasty hazelnuts for the in-shell and confectionary markets. Clonal propagation is required to provide nursery trees...
Soybeans were grown in hydroponic solutions and in perlite to
devise procedures to measure plant mineral accumulation and
solution depletion over time. Electron emission spectrometry and
micro-Kjeldahl-autoanalyzer analytic techniques were used to
monitor mineral content of individual plants and their corresponding
solutions. An automated computer assisted system of converting
raw...
This study evaluates Beufil's Diagnosis and
Recommendation Integrated System (DRIS) on hazelnuts.
Although sufficiency ranges are currently the main
approach for fertilizer recommendations in Oregon, DRIS
enhanced nutritional interpretations, and might alter
recommendations. Reference values (DRIS norms) were
developed using 15 years of published and unpublished
field data. DRIS indices...
An investigation of the effects of soil and foliar applications
of boron and of time of foliar application of boron on
growth, yield, and boron content of bush snap beans was made
during the 1962 growing season. This study was conducted at two
locations: Corvallis and Aurora, Oregon.
Yield, dry...
Managed honey bee (Apis mellifera L.) colonies are important pollinators of many cultivated crops. Honey bee colony declines averaging 30% annually in the United States for the past 7 years have caused significant concern and hence have been a topic of intensive investigation. These declines are reportedly due to multiple...
The impact of fertilizer source and cultivar on growth, fruit quality, and yield was evaluated in organic blackberry (Rubus L. subgenus Rubus Watson) from 2011-2013 in three studies. In all studies, plants were drip irrigated, and weeds were managed using a woven polypropylene, permeable landscape fabric (weed mat). At a...