Paraquat (1,11-dimethy1-4,4'-bipyridinium ion) and glyphosate [N (phosphonomethyl)glycine] are herbicides utilized for chemical seedbed preparation in the establishment of grass and legume seed crops. When these herbicides are applied after seeding the crop, seeds which are not protected by a layer of soil could be exposed to the herbicide. Effects of...
The objectives of this study were: 1) to identify and map the
experimental area of Meadow Creek watershed by existing vegetation,
and 2) to identify and map the experimental area of Meadow Creek
watershed by habitat types. The classification system adopted for
this study was based on the habitat type...
A study was conducted over a two year period, 1973 through
1974, on perennial ryegrass-subclover pastures with stocking rates
of 7.4 (moderate), 9. 9 (heavy), and 12.4 (overstocked) ewes per
hectare to establish guidelines on stocking intensity for dryland
improved pastures in western Oregon. Climatic conditions varied
annually and caused...
The objectives of this study were to evaluate the effects of site
potential, season and plant part on percent crude protein, percent
digestibility of dry matter and yield of cereal residues. Three cereal
types, club wheat (Triticum aestivum) tall, bearded wheat (T.
aestivum), and barley Hordeum vulgare) were examined.
Stress...
The study involved three separate research efforts
in which 10 Holstein calves and 85 purebred Hampshire and
Suffolk ewe and ram lambs were employed. The objectives of
the experiments were to characterize appetite, describe its
inheritance and evaluate its associations with animal
performance.
In the calf experiment, appetite was determined...
Ninety-six mature pregnant Hereford cows were allotted to three
replications with four treatments. Pregnancy was determined by rectal
palpation prior to the initiation of the study. The cows were
artificially inseminated the previous spring, beginning the end of
May, over a period of 42 days to a single Angus sire....
The objectives of this study were to investigate the effects of
the by-product, ryegrass straw, and the feed additive, monensin, on the
performance of feedlot lambs.
Four pelleted rations were fed ad libitum: Ration 1 - 50% barley,
50% alfalfa hay; Ration 2 - 50% barley, 50% alfalfa hay and...
Parental and segregating populations derived from four winter x
spring wheat crosses were investigated to obtain information concerning
the inheritance and association of earliness, grain yield and yieldrelated
traits. Feasibility of selecting in early generations for these
characteristics was also evaluated. Four winter wheat cultivars
(Hyslop, Yamhill, Bezostaia 1, and...
Grazing on the mountainous forested ranges of the Camp Creek
Unit, Malhuer National Forest, was typified by irregular distribution
of free-ranging cattle. A combination of management and physical,
topographic constraints caused cattle to concentrate on the riparian
zone early in the grazing season in 1977 and 1978. A large percentage...