Earthworms loosen, mix and oxygenate the soil as they burrow channels. They improve the soil's structure, leaving space for water to be drained away from the surface and stored in the soil. Research has shown that soils without earthworms can be 90 percent less effective at soaking up water.Earthworm tunnels bring in oxygen, drain water and create space for plant roots. Their natural feeding habits mean that small amounts of soil pass through their bodies and, surprisingly, when they excrete it, it is in better condition—what goes in comes out much better!Earthworms loosen, mix and oxygenate the soil as they burrow channels. By their activity in the soil, earthworms offer many benefits: increased nutrient availability, better drainage, and a more stable soil structure, all of which help improve farm productivity. Worms feed on plant debris (dead roots, leaves, grasses, manure) and soil.They are also known as the ''Farmer's Friend"