It relies upon on what you mean by "powdery." If it feels like the belongings you will super on your dist pan once you sweep the floor, it particularly is pronounced as "sandy soil." it particularly is present in marshes close to the shore, on account that marshes close to the shore is many times sandy. It needs extra organic and organic matter to make it loamy. (Loamy is sturdy planting soil. ot clay and not sand.) in case your wetland isn't concerning to residing close to sandy beaches, yet that "powdery" is like dried mildew or mold, it particularly is a concern. Sneak a peek at your associates soil to verify if it particularly is in simple terms awful soil or contaminated soil.
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Soil Classification
http://soils.usda.gov/technical/classification/
How Do Scientists Classify Soils
It relies upon on what you mean by "powdery." If it feels like the belongings you will super on your dist pan once you sweep the floor, it particularly is pronounced as "sandy soil." it particularly is present in marshes close to the shore, on account that marshes close to the shore is many times sandy. It needs extra organic and organic matter to make it loamy. (Loamy is sturdy planting soil. ot clay and not sand.) in case your wetland isn't concerning to residing close to sandy beaches, yet that "powdery" is like dried mildew or mold, it particularly is a concern. Sneak a peek at your associates soil to verify if it particularly is in simple terms awful soil or contaminated soil.
Pedology/Edaphology