This module describes important criteria to use in evaluating land for waste treatment sites and tells where the necessary information for such evaluation can be obtained. Among the important criteria for evaluation are climate, land use of potential site and surrounding areas, topography, drainage characteristics, soil properties, and geology.…

This module examines the basic properties of soil which have an influence on the success of land treatment of wastes. These relevant properties include soil texture, soil structure, permeability, infiltration, available water capacity, and cation exchange capacity. Biological, chemical and physical mechanisms work to remove and renovate wastes…

This document provides an introduction to and instructions for the use of AGDEX, a comprehensive numeric filing system to classify and organize a wide variety of agricultural publications. The index is subdivided and color coded according to the following categories: (1) field crops; (2) horticulture; (3) forestry; (4) animal science; (5) soils;…

Included are ideas, suggestions, and examples for selecting and designing conservation science projects. Over 70 possible conservation subject areas are presented with suggested projects. References are cited with each of these subject areas, and a separate list of annotated references is included. The references pertain to general subject…

This study is concerned with the problem of collecting information on natural resources. It analyses the cost of effectiveness of various kinds of surveys and related techniques (for example, aerial photography, geological and soil studies, and forest surveys) under various conditions, distinguishing between "time-bound" information and…

The Australian Science Education project is producing materials designed for use in grades 7 - 10 of Australian schools. This is the first trial version of a unit expected to take about 20 40-minute periods to complete. Included are a teacher's guide to the unit, four pupil booklets ("Looking at Soils,""Things to do With…

The proceedings of the 1967 Conference on Undergraduate Teaching in the Plant and Soil Sciences are presented in this publication. Seven individual presentations and reports from ten working groups review the adequacy and effectiveness of courses and curricula for undergraduate students; discuss instructional materials, methods, and equipment that…

A method is described for preparing large gelatine-embedded soil sections for ecological studies. Sampling methods reduce structural disturbance of the samples to a minimum and include freezing the samples in the field to kill soil invertebrates in their natural microhabitats. Projects are suggested for upper secondary school students. (Author/BB)

The rhizosphere is the area directly surrounding the roots of a plant and an area of tremendous microbial growth. This article described techniques for studying this soil biome. Illustrations are included. (MA)

Describes an experiment simulating heat transfer and overall energy loss in upper layers of soil surfaces. (SL)

Activities for use in a field trip to an ancient mud flow are provided. Photographs illustrate the techniques described. (CP)

Describes a technique for comparing the number of bacteria in various soil samples. The equipment and materials are readily available, and the technique is suitable for high school students. (JR)

Discusses how trace elements are determined in soils and plants and accounts for some of the effects observed. (BB)