In the last 30 years, birdsfoot trefoil (Lotus corniculatus L. )
has been recognized as a great potential source of forage. Since the
1930's, many studies have been reported in relation to birdsfoot
trefoil characteristics, including some directly related with the
association between seed yield and its components.
The purpose...
Studies were conducted to determine the effectiveness of a
biological pollen barrier of rye, Secale cereale, in preventing out-crossing between Lolium multiflorum genotypes in each of the 300
crossing blocks established in this experiment.
Fluorescent tests of seeds of open-pollinated and single-crossed progeny of four annual ryegrass sources were used...
Thirty-three genotypes of red fescue were selected on the
basis of diverse origin, anthesis date, and type of spreading from a
space-planted introduction nursery.
Open-pollinated, single-cross, and top-cross progeny
nurseries were established into a randomized block with four replications,
20, 9, 8 entries, respectively, with nine plants per entry
on...
Soil erosion by mass wasting is the major problem on forest
lands of the Pacific Northwest, The clay fractions of soils from a
large number of sites in Oregon's Western Cascades were characterized
in order to determine the relationships of various clay materials to
mass movements. Each site was either...
The objective of this research was to identify the
optimum cultural practices for the production of the highest
quality wheat seed in Oregon. The production methods
included locations, irrigation, N levels and seeding rates.
The seed quality factors studied were seed weight, bushel
weight, protein content and seedling vigor.
Foundation...
The winter and summer growth of varieties of tall fescue
(Festuca arundinacea Schreb.) that had originated from the Mediterranean region (Oregon 1000 and Tunisia) and northern Europe (Alta)
were studied outdoors in the Mediterranean climate of western Oregon,
and in greenhouses and controlled environment chambers. Treatments
of temperature, photoperiod and...
Experiments were conducted under field and greenhouse conditions
to investigate the effects of chlorpropham (isopropyl mchlorocarbanilate)
on vegetative and reproductive development in
Chewings fescue (Festuca rubra L. subsp. commutata Gaud.) and to
determine the time of induction and initiation under natural conditions.
Chewings fescue was found to be very susceptible...
The effectiveness of early generation selection for yield and
yield stability and the possible identification of superior parental
combinations were studied in winter wheat populations representing
different levels of genetic diversity. Experimental material for
evaluating yield stability consisted of nine bulk and seven modified
bulk populations derived from nine parental...