Media type: E-Article Title: Relationship Between the Normalized SPAD Index and the Nitrogen Nutrition Index: Application to Durum Wheat Contributor: Debaeke, P.; Rouet, P.; Justes, E. imprint: Informa UK Limited, 2006 Published in: Journal of Plant Nutrition Language: English DOI: 10.1080/01904160500416471 ISSN: 0190-4167; 1532-4087 Origination: Footnote: