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Browsing Extension Service -- Miscellaneous / Educational Materials by Subject "Irrigation -- Oregon -- Equipment and supplies -- Maintenance and repair"

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Browsing Extension Service -- Miscellaneous / Educational Materials by Subject "Irrigation -- Oregon -- Equipment and supplies -- Maintenance and repair"

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  • Oregon State University. Extension Service; Selker, John S. (Corvallis, Or. : Extension Service, Oregon State University, 2004-04)
    We first need to note that the soil nitrogen that makes plants green is primarily in the form of nitrate, and this nitrogen is accessible to plants specifically because it stays dissolved in the soil water. In a typical ...

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