1. T13-1 Soil Science & Management, 4E Chapter 13 Soil Sampling and Testing

2. T13-2 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

3. T13-3 Soil Science & Management, 4E Terms to Know Composite sample Green tissue test Precision farming Site-specific management Soil sampling Soil testing Tissue testing

4. T13-4 Soil Science & Management, 4E Why Test Soils? Figure 13-1

5. T13-5 Soil Science & Management, 4E Why Test Soils? Level I: Deficient Level II: Sufficient Level III: High Level IV: Toxic

6. T13-6 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)

7. T13-7 Soil Science & Management, 4E Figure 13-2 Soil Sampling

8. T13-8 Soil Science & Management, 4E Figure 13-4 Soil Sampling

9. T13-9 Soil Science & Management, 4E Figure 13-5 Soil Sampling

10. T13-10 Soil Science & Management, 4E Soil Sampling Sampling greenhouse and container plants Sampling in site-specific management

11. T13-11 Soil Science & Management, 4E Soil Testing Grower testing Figure 13-8

12. T13-12 Soil Science & Management, 4E Tissue Testing Green tissue tests

13. T13-13 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