Why is topsoil a vitally important layer of soil?

Answer 1

Top soil is the layer in which is found organic matterfrom dead and decaying organisms. By their decomposition, these organisms contribute to the supply of the 17-18 nutrients that are needed for healthy soils to support healthy plants. Many plants, such as edible food producers and grasses, have shallow roots whose home is in the top soil. They therefore depend upon the top soil for adequate supplies of soil air, moisture and nutrients. Likewise, plants depend upon top soil to provide protection to roots against environmental extremes and stresses. In the same vein, plants depend upon top soil for the soil food web life forms that encourage healthy plant growth. For example, bacterial glues and fungal threads group soil particles into air and water pore space friendly clumps. Proper air and moisture levels in soil encourage proper intake by plant roots of necessary nutrients and water. Plants thereby have what they need to interact with sunlight, through photosynthesis, to make energizing starches and sugars vital to plant processes. Ultimately, plants are more resistant to environmental stresses and stressors. And they produce healthier, more attractive plant parts what with the decreased dependence upon chemical controls. What it comes down to is good inputs, such as healthy top soil, make for good outputs, such as attractive, healthy plants.

Answer 2

because it is the upper part of the soil and it protects it. It is also very fertile and is what most plants get there nutrients from. It is the most important layer of soil because it has the most humus and nutrients.

Answer 3

it is important because it gives us oxygen because it lets our plants grow

Answer 4

Plants need soil. Plants are the first link in the food chain, and produce the oxygen that animals breathe. No soil, no plants. No plants, no air, no food, no animals on land.

Answer 5

Topsoil is important because it is easy for plant roots to find their way through. It also has better drainage than the hard clay underneath.

Answer 6

It's important because on this layer of soil, plants are nourished. The topsoil have to be healthy to grow plants on it. It contains humus, bacteria, fungi, insects and worms.

Answer 7

• Plants get more nutrients than other layers.It is necessary for plant growth.

Answer 8

The top layers of soil have nutrients that give plants energy to survive.