Browsing Extension Service -- Miscellaneous / Educational Materials by Author "Hart, John"

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Apples

Oregon State University. Extension Service; Righetti, Timothy L.; Wilder, Kris; Stebbins, Robert; Burkhart, David; Hart, John (Corvallis, Or. : Extension Service, Oregon State University, 1998-06)

Observations of annual growth and size and color of leaves and fruit are helpful in determining fertilizer needs. In addition, leaf analysis indicates which elements are present in adequate, deficient, or excessive amou ...
Nitrogen for bearing cranberries in North America

Oregon State University. Extension Service; Davenport, Joan; DeMoranville, Carolyn; Hart, John; Roper, Teryl (Corvallis, Or. : Extension Service, Oregon State University, 2000-06)

Nitrogen application, either from commercial fertilizers such as ammonium sulfate or from organic sources such as fish waste, is essential for cranberry production. This publication addresses the amount, timing, and sou ...