Increases in the intensity of rainfall, paired with droughts that leave soil dry and loose, would leach more topsoil from agricultural fields each year. For example, the study showed that the ...

But beneath the feet of Iowa’s farmers, a crisis is unfolding. The average topsoil depth in Iowa decreased from around 14-18 inches (35-45cm) at the start of the 20th Century to 6-8 inches (15 ...

Community or voluntary groups interested in receiving free topsoil or compost can email the Communities Team at [email protected] with their name, group name, and contact number. Only ...

For example, an Ultisol with a fragipan at 30 centimeters ... The redistribution of topsoil from historical sediment deposition sites to eroded landscape positions is a more intensive remediation ...