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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:: Presentation
Full Text:: Utilization by Pacific Northwest Crops. PNW Extension 513. Nutrient Management for Sustainable Vegetable

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:: for broccoli grown in the Willamette Valley (PNW Extension 513). The amount of N mineralized from

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:: predicted from yield curves with those predicted from published extension guidance. We applied a range of

Creator:: Hart, John M., Horneck, Donald A., Sullivan, Dan M., and Christensen, Neil W.
Abstract:: Nitrogen can be lost when the quantity of available nitrogen exceeds crop demand or nitrogen availability is not in synchrony with crop demand. Either situation results in accumulation of available nitrogen, primarily in the nitrate form, at the end of the growing season. Over-winter nitrogen loss occurs primarily as nitrate-...
Resource Type:: Conference Proceeding
Full Text:: and Utilization by Pacific Northwest Crops. Oregon State University Extension Service, PNW 513

ScholarsArchive@OSU