NUTRIENT CONTENT OF VARIOUS POT PLANT SPECIES AS INFLUENCED BY SUPPLEMENTARY LIGHTING
When grown to marketable stage the plants were subjected to chemical analysis. Marked responses to supplementary lighting as expressed by concentrations of mineral nutrients in the dry matter of the plant material were observed. The responses were systematic concerning some nutrients and markedly plant specific regarding others. Some nutrient concentrations were not influenced by the supplementary lighting and the magnitude of responses differed widely among plant species.