ISHS Acta Horticulturae 191: Symposium on Protected Cultivation of Solanacea in Mild Winter Climates
STUDY OF CA/K INTERACTION IN LYCOPERSICON ESCULEMTUM MILL. INCIDENCE IN "BLOSSOM END ROT". |
| Authors: | O. Carpena, C. Cadahía, J. Peñalosa, M.J. Sarro |
| Abstract:
The Ca-K antagonism is studied to obtain a satisfactory Ca/K ratio as the first step to achieve an optimum cationic nutrition of plants. Values of Ca/K ratio tested were : 0.7, 1.2 and 1.5 Anionic relations remained constant. In the first treatment visual symptoms of "blossom end rot" were observed. Ca/K ratio in the leaf is related to Ca/K ratio in the nutrient solution, but Ca/K ratio in the sap is a better index of the Ca/K in the medium. Ca/K ratios in sap and leaf are proposed. Those results would serve as reliable information about the Ca and K nutrition of plants, and the relations of both with other elements. | |
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