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Learn why soil testing is crucial, how to sample soils correctly, interpret soil test reports, and utilize plant tissue tests in soil science and management. Explore terms like composite sample, precision farming, and soil sampling.
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Chapter 13 Soil Sampling and Testing Soil Science & Management, 4E
Objectives • 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 • 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 Soil Science & Management, 4E
Why Test Soils? • Level I: Deficient • Level II: Sufficient • Level III: High • Level IV: Toxic Soil Science & Management, 4E
Soil Sampling • Testing frequency • Selecting the sampling area • Depth of testing • Sampling procedure (See Figures 13-2, 13-4, 13-5) Soil Science & Management, 4E
Soil Sampling Figure 13-2 Soil Science & Management, 4E
Soil Sampling Figure 13-4 Soil Science & Management, 4E
Soil Sampling Figure 13-5 Soil Science & Management, 4E
Soil Sampling • Sampling greenhouse and container plants • Sampling in site-specific management Soil Science & Management, 4E
Soil Testing • Grower testing Figure 13-8 Soil Science & Management, 4E
Tissue Testing • Green tissue tests Soil Science & Management, 4E
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 Soil Science & Management, 4E