Ozonium root rot /

OZOXIUM EOOT EOT O roots were worked out, and detailed observations on the condition of the roots of these plants could be made in the laboratory with the aid of the microscope and dissecting tools.The same method was used in excavating plants in a root-rot spot in an alfalfa field, except that a trench was dug from the center out through the outer edge of the circle.With fruit trees, a large hole was dug around the collar of the tree, and the lateral roots were uncovered from this point.Many such root excavations were made at the United States field stations at San Antonio, Tex., and Sacaton, Ariz., in cotton -and alfalfa fields and on fruit trees.