• Characterization of visual symptoms of nutritional deficiencies in oak seedlings 

      Sepúlveda, Yira Lucia; Díez, María Claudia; Osorio, Nelson Walter; Moreno, Flavio Humberto; León Peláez, Juan Diego (2014-07-04)
      The identification of visual symptoms of deficien- cies is a widely used method in the diagnosis of nutritional problems in agricultural and forestry production. The aim of this study was to charac- terize visual symptoms ...