what is humas

Humus is a dark organic matter that forms in soil when plant and animal matter decays. It is a kind of soil organic matter that is rich in nutrients and retains moisture in the soil. Humus is difficult to define precisely because it is a very complex substance that is not fully understood. It is different from decomposing soil organic matter, which looks rough and has visible remains of the original plant or animal matter. Fully humified humus, on the contrary, has a uniformly dark, spongy, and jelly-like appearance, and is amorphous. Humus contains the elements necessary for plant growth, including nitrogen, phosphorus, sulfur, calcium, magnesium, and potassium. It is crucial for soil health and plant growth, as it provides important nutrients needed for plant growth, including nitrogen, in a form that is highly usable for plants. Humus can be made naturally or by humans collecting organic material and composting it.