| 11. | In 1984, Oregon Tilth established an early organic certification service in the United States.
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| 12. | In December 2010, the ACHS Apothecary Shoppe became Oregon Tilth Certified Organic ( OTCO ).
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| 13. | In 2014, she made presentations on the project at Frye Art Museum and Seattle Tilth.
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| 14. | It's time to plant cover crops of winter rye, to add nitrogen and tilth to the soil.
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| 15. | Digging destroys the soil's tilth, and just walking on grassy paths and lawn causes destructive soil compaction.
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| 16. | We rose above our abject dependence on weather, tide and tilth; we were safe in the arms of empire.
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| 17. | Smaller events include Seattle Tilth's chicken coop tour and the Wallingford Neighborhood office's garden and home tours.
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| 18. | A brownfield site adjacent to Humboldt Park is being developed by Urban Tilth as a community farm producing locally grown produce.
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| 19. | Advantageous changes are high weed suppression, soil loosening by the large hemp root system and the positive effect on soil tilth.
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| 20. | Over a period of time in a well-mulched soil, the surface soil is often in a state of fine tilth.
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