Discusses procedures for teaching basic soil morphological concepts using soil cores collected along a toposequence. Describes materials and methods for collecting, laboratory use of cores, and student evaluation results. Shows a table of criteria used to describe soils for profile descriptions. (RT)

Reviews a study that examined the effects of laboratories on the grade performance of undergraduates in an introductory crop science course. Results indicated that students enrolled in lecture and laboratory concurrently did not receive higher lecture grades than students enrolled solely in lecture, but did have higher laboratory grades. (ML)

Summarizes the capabilities of a computer program related to forest fertilization. Provides a description of input parameters, some sample exercises, software specifications, and availability information. Additional references are listed. (Author/RT)

Describes a combined field and laboratory exercise suitable for teaching concepts of tillering and yield component compensation which is adapted to climatic conditions where extensive class fieldwork is not possible. Provides information on materials and methods, pedagogical aspects, evaluation, and conclusions. (Author/RT)

Describes a laboratory demonstration that illustrates principles of miscible displacement and chemical retardation in soils. Discusses how the experimental apparatus can be constructed from readily available materials. (TW)

Presents a computer program for use in teaching ion speciation in soil solutions. Provides information on the structure of the program, execution, and software specifications. The program estimates concentrations of ion pairs, hydrolytic species, metal-organic complexes, and free ions in solutions. (Author/RT)

Demonstrates how to promote the transference of concepts and principles developed in other curricula to enhance a student's subject matter mastery in soil classification. Describes course format, critical thinking techniques, and a course evaluation. A conclusion and references are included. (Author/RT)