Effects of Various Kinds of Water on Plant Growth (Part 4) : Effects of Water Treated with Calcium-Mixed Granite on Plant Growth

Abstract

The purpose of the study is to investigate the effect of water treated with calcium mixed Granite (Tetsuta village in Okayama), which is an igneous rock composed mainly of silica and aluminum oxide, on plant growth. Plants were grown using desalinated water, tap water (Kumamoto city) and spring water (Tetsuta village), all of which were treated with 100 g stone/ 1000 ml. The pH values and electric conductivity (EC) values were significantly increased by treatment of water. The mean number of germination days and germination coefficient for radish seeds increased slightly with the treated water. Seedling growth increased markedly with desalinated water and the tap water treated with rocks for 5 days.