@inproceedings{inproceedings6268d51c, title = {Use of the diagnosis and recommendation integrated system (DRIS) evaluate the nutritional status of healthy and blight affected orange trees}, author = {Malavolta, E. and Oliveira, S. A. and Vitti, G C}, year = {1992}, booktitle = {International Colloquium for the Optimization of Plant Nutrition} }