Transcript Chapter 13 Soil Sampling and Testing Soil Science & Management, 4E

Chapter 13
Soil Sampling and
Testing
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Soil Science & Management, 4E
Objectives
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Explain why soils are tested
Sample soils correctly
Describe soil testing
Interpret soil-test reports
Explain how plant tissue tests are used
Soil Science & Management, 4E
Terms to Know
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Composite sample
Green tissue test
Precision farming
Site-specific management
Soil sampling
Soil testing
Tissue testing
Soil Science & Management, 4E
Why Test Soils?
Figure 13-1
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Why Test Soils?
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Level I: Deficient
Level II: Sufficient
Level III: High
Level IV: Toxic
Soil Science & Management, 4E
Soil Sampling
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Testing frequency
Selecting the sampling area
Depth of testing
Sampling procedure (See Figures 13-2,
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Soil Science & Management, 4E
Soil Sampling
Figure 13-2
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Soil Sampling
Figure 13-4
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Soil Sampling
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Figure 13-5
Soil Science & Management, 4E
Soil Sampling
• Sampling greenhouse and container
plants
• Sampling in site-specific management
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Soil Testing
• Grower testing
Figure 13-8
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Tissue Testing
• Green tissue tests
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Summary
• Soil testing is best tool to decide how
much fertilizer is needed
– Information sheet accompanies sample
to provide data for recommendations
– Laboratories used modern equipment
– Commercial laboratories provide more
reliable results
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