Diatomaceous Earth as a Soil Amendment?
Many individuals use food grade diatomaceous earth in their gardens as a natural pest control substance. However, many studies have been conducted to analyze the effect that DE has as a soil amendment.
These studies have shown promising results, suggesting that diatomaceous earth can significantly enhance nutrient retention and moisture retention in soil.
In fact, a study conducted at Southern Cross University in Australia tested soils amended with fertilizer and various rates of DE, with the fertilizer acting as a control substance. The study found that with the addition of DE, the nutrient level of the soil was significantly improved and the leaching of any fertilizer was greatly reduced. The results of this study indicate that the addition of DE to soil amended with fertilizer can allow for more efficient use of fertilizer and reduce the impact that fertilizer has on the environment through leaching.
As a result of this study, it was also discovered that DE improved the retention of moisture in potting mix, soil and sandy soil by holding a greater bulk quantity of water and drying at a slower rate. In fact, it has been shown that the addition of DE to soil can increase drought resistance when added to the sand of golf putting greens.
Do you find that Red Lake Diatomaceous Earth works well as a soil amendment? Share your story.
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