Browsing Extension Service -- Miscellaneous / Educational Materials by Author "Cogger, Craig George, 1950-"

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Post-harvest soil nitrate testing for manured cropping systems west of the Cascades

Oregon State University. Extension Service; Sullivan, Dan M. (dan Matthew), 1954-; Cogger, Craig George, 1950- (Corvallis, Or. : Extension Service, Oregon State University, 2003-05)

This publication describes the use of post harvest soil nitrate testing as a tool for assessment of nitrogen (N) management in manured cropping systems west of the Cascade Mountains in Oregon, Washington, and south coast ...
The Pre-sidedress Soil Nitrate Test (PSNT) for western Oregon and western Washington

Oregon State University. Extension Service; Marx, E. S.; Christensen, Neil Walter, 1944-; Hart, John M. (John Mervyn), 1947-; Gangwer, Michael I.; Cogger, Craig George, 1950-; Bary, Andy I. (Corvallis, Or. : Extension Service, Oregon State University, 1996-04)