Ped

In soil science, peds are aggregates of soil particles formed naturally as a result of pedogenic processes; this natural organization of particles forms discrete units separated by pores or voids. The term is generally used for macroscopic structural units when soils are observed in the field. Soil peds should be described when the soil is dry or slightly moist, as they can be difficult to distinguish when wet. An artificially formed aggregate of soil particles can be called a clod.

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