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Filtering by: Creator Selker, John Subject Nitrogen -- Oregon -- Willamette River Valley -- Fixation -- Testing

Groundwater and nitrogen management in Willamette Valley mint production

Creator:

Oregon State University. Extension Service, Selker, John, and Rupp, David Earl

Abstract:

Directly below commercial mint fields, percolation in excess of 10 ppm of nitrogen as nitrate (NO3 --N), the EPA drinking water standard, occurs for much of the year (Figure 1, page 2). Concentrations rise rapidly after irrigation starts in June, indicating that this nitrogen is being pushed through by irrigation...

Resource Type:

Technical Report