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• 21. [Article] Evaluating honey bee colonies for pollination : a guide for growers and beekeepers

  Declared out of print July 2010. 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....

  Citation × Citation Citation Abstract Copy Title: Evaluating honey bee colonies for pollination : a guide for growers and beekeepers Author: Mayer, D. F., Washington State University. Cooperative Extension, Pacific Northwest Cooperative Extension, United States. Dept. of Agriculture, Fisher, Glenn C., Oregon State University. Extension Service, Burgett, D. M., University of Idaho. Cooperative Extension Service, Johansen, C. A. (Carl A.) Declared out of print July 2010. 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/catalog Title: Evaluating honey bee colonies for pollination : a guide for growers and beekeepers Author: Mayer, D. F., Washington State University. Cooperative Extension, Pacific Northwest Cooperative Extension, United States. Dept. of Agriculture, Fisher, Glenn C., Oregon State University. Extension Service, Burgett, D. M., University of Idaho. Cooperative Extension Service, Johansen, C. A. (Carl A.) Declared out of print July 2010. 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/catalog Close

• 22. [Article] Estimating crop yield and production changes as a function of irrigation deficit based on watershed and county level data

  Response of agricultural crops to irrigation water deficit is well-understood at the field scale. Broader scale (watershed and county levels) studies have been less frequently performed. Data collection ...

  Citation × Citation Citation Abstract Copy Title: Estimating crop yield and production changes as a function of irrigation deficit based on watershed and county level data Author: Darakjian, Priscila Response of agricultural crops to irrigation water deficit is well-understood at the field scale. Broader scale (watershed and county levels) studies have been less frequently performed. Data collection at the field level for extensive areas is time consuming and expensive. The importance of studies at a broader scale for evaluating future scenarios of agricultural land use justifies exploring alternative approaches that produce reasonable results in a faster and more economical manner. The objective of this study was to verify the ability of coarser level data to provide general trends of changes in agricultural cropping patterns as a function of water use management in the Willamette basin. In this study, watershed and county level data were used to analyze broader scale crop water relationships, since these data are abundant and easily accessible. Further, future estimates of crop water use, based on estimates of yield and acreage changes , were attempted for a study period spanning current conditions (2000) through 2050. FAO Yield Response to Water Model was used to relate crop yield and production to applied irrigation water. Assumptions made to apply this model at the basin level related mostly to climatic factors and dynamic change of the system. Changes in maximum crop yield for all important crops grown in the Willamette basin were estimated using a logistic function parameterized with historic and current datasets. It was important to consider the dynamic system response when modeling the system to incorporate environmental, technological and socio-economic factors not reflected in the original model. The results for crop yield showed a decrease through time for sweet corn, stable yield for cherries, ryegrass, and grapes, and increasing yield for alfalfa, strawberries and raspberries. Crops showing higher sensitivity to water deficit included snap beans, winter and spring wheat, oats and filberts. Production estimates showed 3 groups of crops: predominantly successful (filberts, cherries, ryegrass, oats and spring wheat), stable (strawberries, alfalfa, orchardgrass, mint and fescue) and predominantly unsuccessful crops (winter wheat, sweet corn, snap beans and berries). County level and watershed level data proved helpful in developing a more comprehensive view of crop production and its irrigation deficit response, using models incorporating information from finer spatial scale experiments. Socio-economic, technologic and environmental variables that might influence agriculture over time should be investigated in further studies. Title: Estimating crop yield and production changes as a function of irrigation deficit based on watershed and county level data Author: Darakjian, Priscila Response of agricultural crops to irrigation water deficit is well-understood at the field scale. Broader scale (watershed and county levels) studies have been less frequently performed. Data collection at the field level for extensive areas is time consuming and expensive. The importance of studies at a broader scale for evaluating future scenarios of agricultural land use justifies exploring alternative approaches that produce reasonable results in a faster and more economical manner. The objective of this study was to verify the ability of coarser level data to provide general trends of changes in agricultural cropping patterns as a function of water use management in the Willamette basin. In this study, watershed and county level data were used to analyze broader scale crop water relationships, since these data are abundant and easily accessible. Further, future estimates of crop water use, based on estimates of yield and acreage changes , were attempted for a study period spanning current conditions (2000) through 2050. FAO Yield Response to Water Model was used to relate crop yield and production to applied irrigation water. Assumptions made to apply this model at the basin level related mostly to climatic factors and dynamic change of the system. Changes in maximum crop yield for all important crops grown in the Willamette basin were estimated using a logistic function parameterized with historic and current datasets. It was important to consider the dynamic system response when modeling the system to incorporate environmental, technological and socio-economic factors not reflected in the original model. The results for crop yield showed a decrease through time for sweet corn, stable yield for cherries, ryegrass, and grapes, and increasing yield for alfalfa, strawberries and raspberries. Crops showing higher sensitivity to water deficit included snap beans, winter and spring wheat, oats and filberts. Production estimates showed 3 groups of crops: predominantly successful (filberts, cherries, ryegrass, oats and spring wheat), stable (strawberries, alfalfa, orchardgrass, mint and fescue) and predominantly unsuccessful crops (winter wheat, sweet corn, snap beans and berries). County level and watershed level data proved helpful in developing a more comprehensive view of crop production and its irrigation deficit response, using models incorporating information from finer spatial scale experiments. Socio-economic, technologic and environmental variables that might influence agriculture over time should be investigated in further studies. Close

• 23. [Article] Biomass production from the US forest and agriculture sectors in support of a renewable electricity standard

  To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by Elsevier ...

  Citation × Citation Citation Abstract Copy Title: Biomass production from the US forest and agriculture sectors in support of a renewable electricity standard Author: White, Eric M., Alig, Ralph J., Latta, Greg, Skog, Kenneth E., Adams, Darius M. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by Elsevier and can be found at: http://www.elsevier.com/. Title: Biomass production from the US forest and agriculture sectors in support of a renewable electricity standard Author: White, Eric M., Alig, Ralph J., Latta, Greg, Skog, Kenneth E., Adams, Darius M. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by Elsevier and can be found at: http://www.elsevier.com/. Close

• 24. [Article] U.S. Bureau of Agricultural Economics

  Predecessor to the Economic Research Service, the Bureau of Agricultural Economics (1922-1953) conducted studies and disseminated information relating to agricultural production, crop estimates, marketing, ...

  Citation × Citation Citation Abstract Copy Title: U.S. Bureau of Agricultural Economics Predecessor to the Economic Research Service, the Bureau of Agricultural Economics (1922-1953) conducted studies and disseminated information relating to agricultural production, crop estimates, marketing, finance, labor, and other agricultural problems. It also served as the central planning agency for economic and statistical research in the Department of Agriculture. Title: U.S. Bureau of Agricultural Economics Predecessor to the Economic Research Service, the Bureau of Agricultural Economics (1922-1953) conducted studies and disseminated information relating to agricultural production, crop estimates, marketing, finance, labor, and other agricultural problems. It also served as the central planning agency for economic and statistical research in the Department of Agriculture. Close

• 25. [Image] Oregon Agriculture: Farm Crops, August 1952

  	Citation × Citation Citation Abstract Copy Title: Oregon Agriculture: Farm Crops, August 1952 Author: Oregon State College. Federal Cooperative Extension Service Year: 1952 Title: Oregon Agriculture: Farm Crops, August 1952 Author: Oregon State College. Federal Cooperative Extension Service Year: 1952 Close

• 26. [Image] Oregon Agriculture: Specialty Crops, August 1952

  	Citation × Citation Citation Abstract Copy Title: Oregon Agriculture: Specialty Crops, August 1952 Author: Oregon State College. Federal Cooperative Extension Service Year: 1952 Title: Oregon Agriculture: Specialty Crops, August 1952 Author: Oregon State College. Federal Cooperative Extension Service Year: 1952 Close

• 27. [Image] PH037_S00096; 11416; P677

  	[Panorama of farms in the Willamette Valley. Strawberry field, orchards, and farm houses visible. Wagon next to tent in foreground.]
  	Citation × Citation Citation Abstract Copy Title: PH037_S00096; 11416; P677 Year: 1880 [Panorama of farms in the Willamette Valley. Strawberry field, orchards, and farm houses visible. Wagon next to tent in foreground.] Title: PH037_S00096; 11416; P677 Year: 1880 [Panorama of farms in the Willamette Valley. Strawberry field, orchards, and farm houses visible. Wagon next to tent in foreground.] Close

• 28. [Article] Deep soil nitrogen survey, Lower Umatilla Basin, Oregon

  Soils of 49 agricultural and 2 "native condition" sites in the Lower Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning in Fall of 1992. Several sites ...

  Citation × Citation Citation Abstract Copy Title: Deep soil nitrogen survey, Lower Umatilla Basin, Oregon Author: del Nero, Zachary Augustus Soils of 49 agricultural and 2 "native condition" sites in the Lower Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning in Fall of 1992. Several sites were sampled in Spring and Fall 1993 in order to indicate movement or loss of residual soil nitrogen over time. This study was prompted by current concern over contamination of public drinking water supplies by nitrate and the designation of over 550 square miles of this region as a Ground Water Management Area. This study sought to identify links between agricultural management practices-primarily irrigation, fertilization, and crop rotation systems, and deep soil nitrate levels. Soil profiles were divided into 3 "management zones:" 0-3', 3-6', and beyond 6' in depth. These depths represent average rooting depths for the major agricultural crops of the study area. In general, the effective rooting depth of most area-crops does not extend beyond 6', therefore, it was determined that residual soil-nitrate found at this depth or beyond may be a potential source of ground water contamination if not managed correctly. Results of the study indicate that proper management of irrigation, fertilization, and cropping rotation can significantly reduce the potential for contaminating ground water. Deep soil nitrate levels under most agricultural fields were consistent with the concept that some loss of nitrate below the root zone is inevitable, however, this condition can be minimized through intensive crop management. This study concludes that responsible management of agriculture can minimize impacts on ground water, while providing quality food and fiber products to an ever-growing population. In addition, more research is needed in the area of crop physiology and response to intensively managed systems. Such research may provide insight into more efficient methods of crop production and environmental protection. Title: Deep soil nitrogen survey, Lower Umatilla Basin, Oregon Author: del Nero, Zachary Augustus Soils of 49 agricultural and 2 "native condition" sites in the Lower Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning in Fall of 1992. Several sites were sampled in Spring and Fall 1993 in order to indicate movement or loss of residual soil nitrogen over time. This study was prompted by current concern over contamination of public drinking water supplies by nitrate and the designation of over 550 square miles of this region as a Ground Water Management Area. This study sought to identify links between agricultural management practices-primarily irrigation, fertilization, and crop rotation systems, and deep soil nitrate levels. Soil profiles were divided into 3 "management zones:" 0-3', 3-6', and beyond 6' in depth. These depths represent average rooting depths for the major agricultural crops of the study area. In general, the effective rooting depth of most area-crops does not extend beyond 6', therefore, it was determined that residual soil-nitrate found at this depth or beyond may be a potential source of ground water contamination if not managed correctly. Results of the study indicate that proper management of irrigation, fertilization, and cropping rotation can significantly reduce the potential for contaminating ground water. Deep soil nitrate levels under most agricultural fields were consistent with the concept that some loss of nitrate below the root zone is inevitable, however, this condition can be minimized through intensive crop management. This study concludes that responsible management of agriculture can minimize impacts on ground water, while providing quality food and fiber products to an ever-growing population. In addition, more research is needed in the area of crop physiology and response to intensively managed systems. Such research may provide insight into more efficient methods of crop production and environmental protection. Close

• 29. [Image] Annual Report of Hop Investigations, Oregon Agricultural Experiment Station, Agricultural Research Service, United States Department of Agriculture, Industrial Crops Section, Oilseed and Industrial Crops Research Branch, Crops Research Division

  	Oregon Agricultural Experiment Station Annual Report of Hop Investigations, written by Stanley N. Brooks, Agent (Research Agronomist, USDA); Chester E. Horner, Agent (Plant Pathologist, USDA); Sam T. Likens, ...
  	Citation × Citation Citation Abstract Copy Title: Annual Report of Hop Investigations, Oregon Agricultural Experiment Station, Agricultural Research Service, United States Department of Agriculture, Industrial Crops Section, Oilseed and Industrial Crops Research Branch, Crops Research Division Author: Brooks, Stanley N.; Zimmermann, C. E.; Likens, Sam T.; Horner, C. E. (Chester Ellsworth), 1925- Year: 1962 Oregon Agricultural Experiment Station Annual Report of Hop Investigations, written by Stanley N. Brooks, Agent (Research Agronomist, USDA); Chester E. Horner, Agent (Plant Pathologist, USDA); Sam T. Likens, Agent (Chemist, USDA); Charles E. Zimmermann (Research Agronomist, USDA). Title: Annual Report of Hop Investigations, Oregon Agricultural Experiment Station, Agricultural Research Service, United States Department of Agriculture, Industrial Crops Section, Oilseed and Industrial Crops Research Branch, Crops Research Division Author: Brooks, Stanley N.; Zimmermann, C. E.; Likens, Sam T.; Horner, C. E. (Chester Ellsworth), 1925- Year: 1962 Oregon Agricultural Experiment Station Annual Report of Hop Investigations, written by Stanley N. Brooks, Agent (Research Agronomist, USDA); Chester E. Horner, Agent (Plant Pathologist, USDA); Sam T. Likens, Agent (Chemist, USDA); Charles E. Zimmermann (Research Agronomist, USDA). Close

• 30. [Image] Annual Report of Hop Investigations, Oregon Agricultural Experiment Station, Agricultural Research Service, United States Department of Agriculture, Industrial Crops Section, Oilseed and Industrial Crops Research Branch, Crops Research Division

  	Oregon Agricultural Experiment Station Annual Report of Hop Investigations, written by Stanley N. Brooks, Agent (Research Agronomist, USDA); Chester E. Horner, Agent (Plant Pathologist, USDA); Sam T. Likens, ...
  	Citation × Citation Citation Abstract Copy Title: Annual Report of Hop Investigations, Oregon Agricultural Experiment Station, Agricultural Research Service, United States Department of Agriculture, Industrial Crops Section, Oilseed and Industrial Crops Research Branch, Crops Research Division Author: Brooks, Stanley N.; Likens, Sam T.; Horner, C. E. (Chester Ellsworth), 1925-; Zimmermann, C. E.; Haunold, Alfred Year: 1966 Oregon Agricultural Experiment Station Annual Report of Hop Investigations, written by Stanley N. Brooks, Agent (Research Agronomist, USDA); Chester E. Horner, Agent (Plant Pathologist, USDA); Sam T. Likens, Agent (Chemist, USDA); Charles E. Zimmermann (Research Agronomist, USDA); Alfred Haunold (Research Plant Geneticist, USDA). Title: Annual Report of Hop Investigations, Oregon Agricultural Experiment Station, Agricultural Research Service, United States Department of Agriculture, Industrial Crops Section, Oilseed and Industrial Crops Research Branch, Crops Research Division Author: Brooks, Stanley N.; Likens, Sam T.; Horner, C. E. (Chester Ellsworth), 1925-; Zimmermann, C. E.; Haunold, Alfred Year: 1966 Oregon Agricultural Experiment Station Annual Report of Hop Investigations, written by Stanley N. Brooks, Agent (Research Agronomist, USDA); Chester E. Horner, Agent (Plant Pathologist, USDA); Sam T. Likens, Agent (Chemist, USDA); Charles E. Zimmermann (Research Agronomist, USDA); Alfred Haunold (Research Plant Geneticist, USDA). Close