According to research done at the Rothamsted Experimental Station, depending on soil quality, there can be anywhere from 250,000-1.75 million earthworms per acre of land. Poor quality soil will have closer to the 250,000 range; good quality soil, such as farm land, will have closer to the 1.75 million worms per acre. This means that on an average farm with livestock, the weight of the worms beneath the surface of the land will likely outweigh the livestock that walk on top. What makes this more incredible is that a typical garden variety of earthworm can process about 10 pounds of organic material per worm per year. That’s a lot of free enriched soil.
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