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Biosolids Fertilization for Dryland Pacific Northwest Wheat Production

Creator:: Sullivan, Dan M., Bary, A. I., Kropf, J. A., and Granatstein, D. M.
Abstract:: The fertilizer value of anaerobically-digested, dewatered biosolids in dryland cereal cropping systems was evaluated at six locations in central and eastern Washington (25 to 35 cm annual precipitation zone). Biosolids were applied at rates of 3 to 20 Mg/ha (approximately 150 to 900 kg N/ha). We measured increases in soil...
Resource Type:: Conference Proceeding
Full Text:: Biosolids Fertilization for Dryland Pacific Northwest Wheat

Refining nitrogen management for organic broccoli production

Creator:: Sullivan, Dan M., Peachey, Ed, and Donaldson, Andrew
Abstract:: Specialty organic fertilizers used in organic vegetable production are expensive. So, from environmental and economic perspectives, growers want to maximize nitrogen (N) fertilizer use efficiency by the crop. This research was conducted to (1) determine sufficient N fertilizer rates for organic broccoli, (2) evaluate the efficacy of a specialty organic...
Resource Type:: Conference Proceeding
Full Text:: Utilization by Pacific Northwest Crops. PNW Extension 513. Nutrient Management for Sustainable Vegetable

Estimating the dry matter production, nitrogen requirements, and yield of organic farm-grown potatoes

Creator:: McQueen, John Paul Gainer
Abstract:: As part of a participatory research project, where farmers and Oregon State University researchers collaborated, aspects of potato (Solanum tuberosum L.) growing systems were studied. It was determined through conversations with the farmers that quantification of certain growth parameters of potato was lacking, including dry matter accumulation, crop nitrogen (N)...
Resource Type:: Masters Thesis
Full Text:: Utilization by Pacific Northwest Crops (Sullivan et al., 1999a) estimates that the soil N supply from

Developing Extension guidance for management effects on ammonia loss: a computer simulation modeling approach

Creator:: Sullivan, Dan M.
Abstract:: Computer simulation models provide insight into ammonia loss processes and the sensitivity of ammonia loss predictions to environmental and management variables. As an example of how a simple computer simulation model can inform the Extension guideline development process, the ALFAM (Ammonia Volatilization from Field-Applied Animal Slurry) model was used to...
Resource Type:: Conference Proceeding
Full Text:: retention. The ALFAM model outputs provided additional justification for Pacific Northwest Extension

Agronomic biosolids application rates for dryland wheat across a range of northwest climate zones

Creator:: Sullivan, Dan M., Bary, Andrew I., Cogger, Craig G., and Shearin, Todd E.
Abstract:: Predicting agronomic rates is important to derive optimum economic and environmental benefits from biosolids fertilizer applications. We conducted this research to 1) evaluate dryland wheat response to biosolids applications over a range of climate zones in the Pacific Northwest and 2) compare agronomic application rates predicted from yield curves with...
Resource Type:: Conference Proceeding
Full Text:: Northwest climate zones. p. 188-193. In: J. Hart (ed) Proc. Western Nutrient Management Conference. Vol

Nitrogen mineralization from organic amendments during the second year following application

Creator:: Kusonwiriyawong, Charirat
Abstract:: Estimates of nitrogen (N) available from long-term application of organic amendments are required to balance N inputs with crop N requirements. Two studies were conducted to (1) determine N mineralized from organic amendments (manures and composts) during year 2 after application, and (2) compare plant-available N (PAN) determined via in...
Resource Type:: Masters Thesis
Full Text:: of field subplot management in 2001 to 2004 at Oregon State University Vegetable Research Farm, OR

Expansion of scouringrush (Equisetum spp. L.) : crop interference and control options in winter wheat (Triticum aestivum L.) and chemical fallow cropping cropping systems

Creator:: Kerbs, Blake D.
Abstract:: Scouringrushes (Equisetum hyemale L.; E. xferrissii Clute; E. laevigatum L.) are ancient perennial seedless vascular plants historically associated with wetlands, low-lying roadsides or field margins with more plant available water. There has been little research conducted on scouringrush species in the context of agricultural production because traditional farming practices confined...
Resource Type:: Masters Thesis
Full Text:: dryland winter wheat (Triticum aestivum L.) hectares in the inland Pacific Northwest have replaced

Response of Soil Microbially Mediated Nutrient Cycling and Community Structure to Timber Harvest in the Pacific Northwest

Creator:: Danielson, Rachel E.
Abstract:: Forest harvest persists as one of the most globally important industries, and crucially provides raw wood products for both building and fuel materials. Mechanistically complex abiotic and biotic processes curb ecosystem recovery following timber harvest and it is of great importance to understand the effects of this practice on biogeochemical...
Resource Type:: Masters Thesis
Full Text:: Community Structure to Timber Harvest in the Pacific Northwest

Possible compensations of the components of grain yeild in wheat (Triticum aestivum L.) as influenced by genotype by environment interactions

Creator:: Bedoshvili, David
Abstract:: Despite many investigations genotype by environment interaction remains one of the least understood factors in plant improvement. Understanding genotypic differences responsible for such interactions could assist in making more informed breeding decisions. The components of yield being less complex than grain yield per se may be useful for selection to...
Resource Type:: Dissertation
Full Text:: this study showed that genotypic differences in adaptation to the Pacific Northwest and resistance to

Macronutrient Mapping in Oregon, Idaho and Washington

Creator:: Doerge, Thomas A., Gardner, Ernest Hugh, Mahler, Robert L., and Halvorson, A. R.
Abstract:: Proceedings - Northwest Fertilizer Conference - 33rd (1982)
Resource Type:: Conference Proceeding
Full Text:: management programs throughout the Pacific Northwest. Five mapping units have been established for mapping

ScholarsArchive@OSU

Biosolids Fertilization for Dryland Pacific Northwest Wheat Production

Refining nitrogen management for organic broccoli production

Estimating the dry matter production, nitrogen requirements, and yield of organic farm-grown potatoes

Developing Extension guidance for management effects on ammonia loss: a computer simulation modeling approach

Agronomic biosolids application rates for dryland wheat across a range of northwest climate zones

Nitrogen mineralization from organic amendments during the second year following application

Expansion of scouringrush (Equisetum spp. L.) : crop interference and control options in winter wheat (Triticum aestivum L.) and chemical fallow cropping cropping systems

Response of Soil Microbially Mediated Nutrient Cycling and Community Structure to Timber Harvest in the Pacific Northwest

Possible compensations of the components of grain yeild in wheat (Triticum aestivum L.) as influenced by genotype by environment interactions

Macronutrient Mapping in Oregon, Idaho and Washington

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