86 research outputs found
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Sunflower seed, oil, or silage : new crops for central Oregon
Published March 1978. 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/catalo
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Grass varieties for central Oregon
Published November 1976. 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/catalo
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Principles of alfalfa production in central Oregon
Alfalfa hay yields in Central Oregon are only about one-half of their potential level. Annual yields of 4 to 5 tons per acre have been considered to be very good, but if the best known establishment and management practices are conscientiously applied, much higher yields are possible. Studies done at the Central Oregon Experiment Station, Redmond have clearly shown that more than 8 tons of hay per acre can be produced (11). This report discusses aspects of soil conditions, seed inoculation, seeding, weed control, irrigation, cutting time, and spring and fall management that require attention to increase production
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Alfalfa varieties for central Oregon
Between 1965 and 1975, four alfalfa variety test trials, which included 38 different varieties, were conducted at Redmond and Alfalfa by the Central Oregon Experiment Station. Two trials were completed and two are continuing. Hay yields averaged 6.79 and 5.39 tons per acre per year in the completed trials at Redmond and Alfalfa, respectively. The average annual difference between the lowest- and highest-yielding varieties in the completed trials at the two locations was 0.83 tons of hay per acre. In terms of current hay prices ( 53.63 per acre
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The establishment and management of alfalfa in central Oregon
Alfalfa is an extremely important crop in the agricultural economy of Central Oregon. Some of the alfalfa is fed in livestock operations on the farms where it is produced, but most of it is sold as baled hay for use in other parts of the state and region.
Annual yields of 4 to 5 tons of hay per acre have been considered to be very good. However, if proper establishment and management practices are conscientiously applied, much higher yields are possible. Studies conducted at the Central Oregon Experiment Station, Redmond, have clearly shown that yields greater than 8 tons of hay per acre per year are obtainable (Table 1 )
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Cereals for hay in central Oregon
Published April 1979. 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/catalo
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Profitable pasture production in central Oregon
Published January 1977. 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/catalo
Catching Element Formation In The Act
Gamma-ray astronomy explores the most energetic photons in nature to address
some of the most pressing puzzles in contemporary astrophysics. It encompasses
a wide range of objects and phenomena: stars, supernovae, novae, neutron stars,
stellar-mass black holes, nucleosynthesis, the interstellar medium, cosmic rays
and relativistic-particle acceleration, and the evolution of galaxies. MeV
gamma-rays provide a unique probe of nuclear processes in astronomy, directly
measuring radioactive decay, nuclear de-excitation, and positron annihilation.
The substantial information carried by gamma-ray photons allows us to see
deeper into these objects, the bulk of the power is often emitted at gamma-ray
energies, and radioactivity provides a natural physical clock that adds unique
information. New science will be driven by time-domain population studies at
gamma-ray energies. This science is enabled by next-generation gamma-ray
instruments with one to two orders of magnitude better sensitivity, larger sky
coverage, and faster cadence than all previous gamma-ray instruments. This
transformative capability permits: (a) the accurate identification of the
gamma-ray emitting objects and correlations with observations taken at other
wavelengths and with other messengers; (b) construction of new gamma-ray maps
of the Milky Way and other nearby galaxies where extended regions are
distinguished from point sources; and (c) considerable serendipitous science of
scarce events -- nearby neutron star mergers, for example. Advances in
technology push the performance of new gamma-ray instruments to address a wide
set of astrophysical questions.Comment: 14 pages including 3 figure
The Science Performance of JWST as Characterized in Commissioning
This paper characterizes the actual science performance of the James Webb
Space Telescope (JWST), as determined from the six month commissioning period.
We summarize the performance of the spacecraft, telescope, science instruments,
and ground system, with an emphasis on differences from pre-launch
expectations. Commissioning has made clear that JWST is fully capable of
achieving the discoveries for which it was built. Moreover, almost across the
board, the science performance of JWST is better than expected; in most cases,
JWST will go deeper faster than expected. The telescope and instrument suite
have demonstrated the sensitivity, stability, image quality, and spectral range
that are necessary to transform our understanding of the cosmos through
observations spanning from near-earth asteroids to the most distant galaxies.Comment: 5th version as accepted to PASP; 31 pages, 18 figures;
https://iopscience.iop.org/article/10.1088/1538-3873/acb29
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