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Browsing Extension Service -- Miscellaneous / Educational Materials by Subject "Nitrogen fertilizers -- Environmental aspects -- Oregon"

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Browsing Extension Service -- Miscellaneous / Educational Materials by Subject "Nitrogen fertilizers -- Environmental aspects -- Oregon"

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  • Oregon State University. Extension Service; Sattell, Robert; Dick, Richard; Hemphill, Delbert D.; Selker, John S.; Brandi-Dohrn, Florian M.; Minchew, Hudson; Hess, Marlo; Sandeno, Joan; Kaufman, Susan M. (Corvallis, Or. : Extension Service, Oregon State University, 1999-10)
    Willamette Valley field trials have shown that properly managed cover crops can reduce the amount of nitrate (NO3-)
  • Oregon State University. Extension Service; Anderson, Nicole P.; Hart, John M. (John Mervyn), 1949-; Sullivan, Dan M. (Dan Matthew), 1954-; Hulting, Andrew Gerald; Horneck, Donald Arthur; Christensen, Neil Walter, 1944- (Corvallis, Or. : Extension Service, Oregon State University, 2013-07)
    Soil acidity, expressed by low soil pH, causes reduced crop growth and significant economic loss. It is the most commonly overlooked and poorly understood yield-limiting factor in western Oregon and a developing concern ...

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