What are earthworm's castings?
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Asked in Soil
What does most of work of mixing humus within the soil?
Earthworms are the main contributors to enriching and improving soil for plants, animals and humans. Earthworms eat the soil which has organic matter such as decaying vegetation or leaves. After organic matter is digested, the earthworm releases waste from their bodies called castings. Castings contain many nutrients that plants can use.
Asked in Animal Life
How does an annelid feed?
I myself have heard from my family that they absorb nutrients through their skin, but csiro.au says, "Most earthworms feed on a wide variety of organic matter, primarily detritus and algae. Earthworms are considered to be beneficial animals because as they move through the ground feeding, they ingest huge quantities of soil accelerating the nutrient cycle and increasing its productivity. As earthworms feed they pass out what they do not need in the form of castings. These castings are high in nutrients and are in turn food for other animals. Microorganisms also feed on the castings, breaking them down and releasing nutrients that can be used by plants. The burrowing habits of earthworms are also beneficial, as they aerate the soil and allow rainwater to penetrate deeper into the ground."
Asked in Centipedes, Earthworms
What do Gippsland's Giant Earthworms eat?
Asked in Home & Garden, Home Improvement, Lawn Care
Can earthworms kill your lawn?
While earthworms are usually beneficial in that they help break down organic matter allowing nutrient cycling, too many earthworms can actually result in the loss of the grass in a lawn. Excess worm castings coupled with excessive moisture can lead to the loss of grass. I have been witnessing his with the lawn that I planted two years ago. Each rainy season, portions of the lawn with large numbers of earthworms become essentially covered in mud due to the amount of worm castings, slowly causing my grass to disappear. I have reseeded these areas (both side yards), successfully, only to have the grass slowly disappear during the next rainy season - and it is not related to the drainage. There are things you can do to reduce the number of earthworms.