Harnessing the Earthworm a Practical Inquiry Into Soil Building Soil Condition
Harnessing the Earthworm a Practical Inquiry Into Soil Building Soil Condition
Thomas Jason Barrett
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8 21. 9 19. 0 Clayf percent 10. 9 13. 8 13. 1 Fine clayt per cent 9. 1 10. 2 10. 7 * Each sample was a composite of individual samples collected at 5-pace intervals on a line across the field. There were six lines, hence six samples. T Composite samples from whole field. be significant. The total magnesium contents of casts and of soil were virtually identical. In the forest soils (table 2) agreement among the four pro- files was remarkably close, and differences between horizons are obviously ...highly significant. The higher contents of nitrogen, TECHNICAL DISCUSSION TABLE 2 Properties of earthworm casts and of soil from forested areas 161 PROFILE CASTS Al A3 Bl CAIT Al A3 Bl CASTS Al A3 Bl Toul N, % (WF) Organic C, % (WF) C:N I II III IV 0. 630 0. 382 0. 133 0. 086 0. 630 0. 292 0. 106 0. 039 0. 717 0. 320 0. 151 0. 071 0. 523 0. 314 0. 131 0. 062 14. 9 6. 5 2. 0 1. 3 17. 4 5. 3 1. 8 0. 6 16. 6 6. 8 2. 7 1. 0 13. 4 5. 0 2. 1 0. 9 23. 8 17. 1 14. 7 15. 7 27. 6 18. 0 17. 1 15. 9 23. 1 21.
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