Words to Describe topsoils

How topsoils often is described ("________ topsoils")

• shallow
• light
• modern
• organic
• acid
• most
• deep
• humic
• peaty
• natural
• eroded
• leached
• black
• arable
• fertile
• best
• thick
• brown
• thin
• sandy
• textured
• valuable
• cultivated
• agricultural
• typical
• rich
• dark
• friable
• developed