Soil Organic Matter
(Aggregate Stability)
 Hardware cloth and two glass jars are all you need for this demonstration |
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 Choose two soils which you suspect will have different organic matter contents. (garden vs. lawn, no-till crop field vs. conventional tilled crop field. |
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 A soil clod high in organic matter will stick together. The water will be clearer. |
 A soil clod low in organic matter will slake rapidly. The water will soon be cloudy. |