![Estimation of Leaf, Root, and Sap Nitrogen Status using the SPAD‐502 Chlorophyll Meter for Ornamental Shrubs]()
Estimation of Leaf, Root, and Sap Nitrogen Status using the SPAD‐502 Chlorophyll Meter for Ornamental ShrubsMartín, Ignacio; Alonso, Nieves; López, María C.; Prieto, María; Cadahía, Carlos; Eymar, Enrique · Communications in Soil Science and Plant Analysis · 2007