However, many areas have lost 10 to 100 times that amount. Another factor similar to carrying soil is its potential to be moved short distances, such as in plowing or rototilling. The soil that is heavier will be more difficult to move. However, another factor is the ability of the soil to stick together, or the soil's consistence. Clay soil is noted for its stickiness and large energy requirements in tillage.
Sandy soils have a higher bulk density, but are easier to plow since they have weaker consistence.
The lower B.D. of clays is due to their better aggregation. See Rototilling for more information. Soil Consistence Soil consistence is the soil's ability to cohere or stick together. Moist consistence is evaluated by placing the soil between the thumb and forefinger and gently applying pressure. The ease with which a ped can be crushed determines the consistency.