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2026 - 2050 of 2700 Items << < 77 78 79 80 81 82 83 84 85 86 > >>
2026 - 2050 of 2700 Items << < 77 78 79 80 81 82 83 84 85 86 > >>
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Presents pesticide and herbicide application rates and recommendations, by tree growth stage, for pests that infect fruit trees. Covers apples, pears, and cherries. Provides (1) spray program for nutrients; (2) dilutions table for wettable powder...
2015-01 (iso8601)
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The increased use of outdoor recreation as a part of the
American way of life has focused attention on the diminishing ratio
of suitable land available to meet the recreational demands. In
Oregon, where the demand is greatest, there is still ample...
1965-08-12 (iso8601)
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Different methodologies have been used in modeling the epidemiology and economics of aquaculture diseases, including input-output models, benefit-cost analysis, linear programming, simple spreadsheetbased models, compartment models based on...
2012 (iso8601)
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The purpose of this study was to find what effect temperature
and immunization has on the phagocytic activity of fish leukocytes
against certain disease causing bacteria. Also proposed was the
isolation and characterization of a leukocytolytic...
1974-11-05 (iso8601)
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Although European fish consumption is increasingly dependant on aquaculture products given the
decrease of worldwide fisheries landings, the image of farmed fish is more and more controversial. This
paper aims at assessing the importance of farmed...
2006-11 (iso8601)
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Incorporating catch or harvest rate information in repeated-choice
recreation fishing demand models is challenging, since multiple sources of
information may be available and detail on how harvest rates change within
a season is often lacking....
2010 (iso8601)
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Selected secreted and cellular virulence factors of Aeromonas
salmonicida were examined. A protocol was developed for the
separation of two secreted proteases (P1 and P2 protease), and
a trout erythrocyte specific hemolysin (T-lysin) from...
1989-11-10 (iso8601)
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This paper explores the policy efforts dealing with the problem of declining Pacific Northwest fish runs. Results have been
disappointing. Decades of expensive efforts costing billion of dollars have been relatively ineffective in increasing...
2001 (iso8601)
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This paper reports on the valuation of the marine halibut and salmon sport fishery of central and lower Cook Inlet,
Alaska. The project was designed to simulate changes in economic value and regional economic impacts for environmental
analysis but...
2001 (iso8601)
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The number of discussions about sustainable fisheries is increasing world-wide. The crisis in a lot of big
fisheries, e.g. cod fishery on the Grand Banks, salmon fisheries along the pacific coast of the USA and Canada, must lead to
different...
2001 (iso8601)
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The use of gas chromatography for the separation, comparison,
and subsequent identification of flavor volatiles from food
products has proven highly successful in recent years. The
development of various techniques for the concentration of the...
1964-04-28 (iso8601)
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Riparian plant assemblages give clues of the conditions of the soil and other physical characteristics of their stream-side environment. The plight of the spring/summer, and fall Snake River chinook salmon has aroused interest in fish habitat and...
1993-05-06 (iso8601)
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The Oregon Fish Commission operated the Columbia River seal control program under legislative authority. Its purpose was to harass seals and reduce their predation on salmon in the river. Bounties were paid from 1956 through 1970(?) and a seal...
1972-01-13 (iso8601)
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Riparian areas are eco-tones where aquatically- and terrestrially-derived insect biomass is exchanged between habitats, presenting consumers with new sources of energy, and resulting in a reciprocal subsidy. The relative contribution of energy...
2006-07-24T20:20:11Z (iso8601)
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Studies conducted by the University of Nevada-Las Vegas (UNLV), the Nevada Department of Wildlife (NDOW), the Arizona Game and Fish Department (AGFD), The Nevada Division of Environmental Protection (NDEP), and the United States Bureau of...
1987-11-01
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APPENDIX TT—REPORT OF CAPTAIN POWELL.
2473
prospective, commerce requires a deepening and stability of the entrance
channel.
Two trans-continental railroads now terminate on the Willamette and
Columbia rivers, and a third...
2006-06-16
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Columbia River lumber fleet for year 1883-'84.
[Furnished by Capt. George Flarel, with additions from reliable sources.] Months. No. of
vessels feet. Value, July 5 2, 028 $20,289
August 3 1,505 15, 049
September 3 1,440 14,401...
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