COLLOIDAL CLAY CULTURES—PREPARATION OF THE CLAY AND PROCEDURES IN ITS USE AS A PLANT GROWTH MEDIUM

Abstract

Description is given of the methods of preparing the colloidal acid-clay and of titrating different nutrients on it for accurate control of them as offered to plants. Details are given regarding the separation of the colloidal clay from the soil, its electrodialysis, its standardization, and its final prepn. as a medium for plant growth.