Reading & Interpreting Soil Test ReportsUnit 1.11 | Part 1 – 431
Introduction
Introduction: Reading & Interpreting Soil Test
Reports
UNIT OVERVIEW
Soil analyses can help form the
basis of a sound soil fertility and
plant nutrition program. In this
unit, students will learn how to
collect soil samples for laboratory
analysis, and interpret and use soil
analysis report data as a tool for
soil quality assessment. Lectures
and demonstrations will present the
way that soil analysis results can
be incorporated into an overall soil
management plan.
Note: Before introducing the material in this
unit, Part 2 of this manual on applied soil
science (Units 2.1–2.3) should be presented
to students who do not have a background
in basic soil physical properties, chemistry,
and biology. Unit 2.2, Soil Chemistry and
Fertility, is an especially useful complement
to the material presented here. In addition,
Unit 1.1, Managing Soil Health, should be
presented prior to this unit.
MODES OF INSTRUCTION
> LECTURES (3 LECTURES, 2–2.5 HOURS TOTAL)
Lecture 1 covers the role of soil analysis in sustainable
agriculture.
Lecture 2 addresses the soil properties measured in a
comprehensive soil analysis.
Lecture 3 offers a short look at basic considerations in
applications of soil amendments and fertilizers.
> DEMONSTRATION 1: TAKING A REPRESENTATIVE SOIL
SAMPLE (1.5 HOURS)
Demonstration 1 illustrates the basic procedures involved
in taking a representative soil sample for laboratory
analysis.
> DEMONSTRATION 2: NITROGEN BUDGETING (1 HOUR)
Demonstration 2 offers an example of how a simple
nitrogen budget can be calculated for an organic farm or
garden.
> DEMONSTRATION 3: FIELD OBSERVATIONS (1.5 HOURS)
Demonstration 3 provides an outline to use in visiting a
farm or garden operation for which a soil report has been
prepared. This outline directs students in how to observe
the relationship between soil fertility management practices
and plant nutrient levels (identified in the soil test) to plant
growth and pest responses found in the field.
> ASSESSMENT QUESTIONS (0.5 HOUR)
Assessment questions reinforce key unit concepts and skills.