Virginia Cooperative ExtensionFox, Laurie J.Owen, James Stetter, 1975-2017-03-082017-03-082016-02-18http://hdl.handle.net/10919/75334This Spanish language publication explains the need for and application of nitrogen, phosphorous, and potassium to maintain healthy trees and shrubs.2 pagesapplication/pdfspVirginia Cooperative Extension materials are available for public use, re-print, or citation without further permission, provided the use includes credit to the author and to Virginia Cooperative Extension, Virginia Tech, and Virginia State University.Trees, Shrubs, & GroundcoversExtension publicationhttp://www.pubs.ext.vt.edu/430/430-018S/430-018S-PDF.pdfNPK fertilizerstreesshrubsplant maintenance