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A Technique for Making Thin Sections of Soil with Roots in Place¹

USDA, Agronomy and Soils Department
Forestry Department, Auburn University, Auburn, Ala.

ABSTRACT

A short dehydration series was combined with a plasti-embedding technique to study cotton roots in place. This was an effort to see if there was much particle orientation at the root surface-soil interface. A limited number of sections failed to show much orientation but did show a packing effect. The use of colored plastic was investigated. It greatly facilitates thin section work as it makes identification of pore space much easier.

¹ Contribution from the Soil and Water Conservation Research Division, ARS, USDA, and the Departments of Agronomy and Soils, and Forestry, Alabama Agr. Exp. Sta., Auburn, Ala.

Received for publication February 26, 1965. Accepted for publication April 30, 1965.