Effects of electrolyzed water concentration on the yield and quality characteristics of mitsuba (Japanese honewort, Cryptotaenia japonica Hassk, cv. 'Osaka-Shiroguki Mitsuba') cultured by hydroponics
2004
Abe, K. (Osaka Prefectural Univ., Sakai (Japan)) | Achiwa, N. | Itoh, M. | Shima, S. | Kusakari, S.
Electrolysis of dilute salt water generates electrolyzed alkaline water at the cathode, which contains a large amount of Na. Use of this water as the basis of hydroponic nutrient solution may result in accumulation of chemical components contributing to the plant quality. In this study, a 10-fold, 3-fold or 1 -fold diluted electrolyzed alkaline water was used as the basis of nutrient solution for hydroponics to evaluate its effect on the yield and chemical content of the cultured plants. As a result, the lot using a 10-fold solution as the basis of hydroponic nutrient solution had a higher yield (leaf blade weight stalk weight and root weight) and dry weight than the control lot, with almost equal chemical content (inorganic components, chlorophyll, phenols and free amino acid). The above result showed that a nutrient solution with a 10-fold electrolyzed alkaline water was effective for growth promotion and yield increase. On the other hand, the nutrient solution based on a 3 -fold or 1 -fold electrolyzed alkaline water caused growth inhibition to have a lower yield and reduced the chlorophyll and free amino acid content The 3 -fold or 10-fold dilution decreased the P and K content but increased the Ca and Mg content.
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