Abstract
A study of the accessory salts of the nutrient soln. recommended by Trelease and Trelease showed that for isolated tomato roots only 4 of these salts, MnS04, ZnSO4, H3BO, and KI, are essential. A nutrient containing these 4 salts, the salts of Pfeffer''s solution, iron, sucrose, ammo acids, and vitamin B1, in proper proportions, will maintain satisfactory and continuous growth of these roots.